Major Shareholders
| Concept | 
                                    
                                        As at 2024-06-30  | 
                            
                                
                                    
                                        As at 2024-06-30  | 
                            
                                
                                    
                                        As at 2024-06-30  | 
                            
                                
                                    
                                        As at 2024-06-30  | 
                            
                                
                                    
                                        As at 2024-06-30  | 
                            
                                
                                    
                                        As at 2024-06-30  | 
                            
                                
                                    
                                        As at 2024-06-30  | 
                            
                                
                                    
                                        As at 2024-06-30  | 
                            
                                
                                    
                                        As at 2024-06-30  | 
                            
                                
                                    
                                        As at 2024-06-30  | 
                            
                                
                                    
                                        As at 2024-06-30  | 
                            
                        
|---|---|---|---|---|---|---|---|---|---|---|---|
| Major shareholders | |||||||||||
| Major shareholders | |||||||||||
| Name | 
                                        
                                             
                                                小田 将義
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                瀬口 瑞恵
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                株式会社肥後銀行
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                株式会社日本カストディ銀行(信託口)
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                酒巻 英雄
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                株式会社CSホールディングス
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                瀬口 悦子
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                井手尾 環
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                瀬口 力
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                Lib Work従業員持株会
                                                
                                             
                                        
                                     | 
                                
                            
| Address | 
                                        
                                             
                                                福岡市中央区
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                熊本県山鹿市
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                熊本市中央区練兵町1番
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                東京都中央区晴海1丁目8-12
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                千葉県流山市
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                熊本県山鹿市鍋田174番地
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                熊本県山鹿市
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                熊本市東区
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                熊本県山鹿市
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                熊本県山鹿市鍋田178番地1
                                                
                                             
                                        
                                     | 
                                
                            
| Number of shares held | 
                                        
                                             
                                                125,200
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                640,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                132,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                325,100
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                170,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                8,086,040
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1,957,317
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                400,200
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                14,672,957
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                2,468,600
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                368,500
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                            
| Shareholding ratio (excluding treasury shares) | 
                                        
                                             
                                                0.0052
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.0268
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.0055
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.0136
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.0071
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.3391
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.0820
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.0167
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.6149
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.1035
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                0.0154
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     |