Statement Of Cash Flows
| Concept | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2023-03-31 | 2022-04-01 to 2023-03-31 | As at 2022-03-31 | 
|---|---|---|---|---|---|
| Statement of cash flows | |||||
| Statement of cash flows | |||||
| Cash flows from operating activities | |||||
| Profit (loss) before income taxes | — | 
                                                269,776,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                329,291,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Depreciation | — | 
                                                143,090,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                138,295,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Increase (decrease) in provision for retirement benefits | — | 
                                                24,638,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -6,928,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Increase (decrease) in allowance for doubtful accounts | — | 
                                                -2,372,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,100,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest and dividend income | — | 
                                                -952,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -712,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest expenses | — | 
                                                2,670,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,541,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Decrease (increase) in inventories | — | 
                                                -4,243,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -73,181,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Increase (decrease) in trade payables | — | 
                                                -659,258,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -389,427,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Subtotal | — | 
                                                -181,124,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -115,629,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest and dividends received | — | 
                                                952,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                712,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest paid | — | 
                                                -2,517,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,524,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Income taxes paid | — | 
                                                -84,723,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -100,427,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from operating activities | |||||
| Cash flows from operating activities | |||||
| Increase (decrease) in provision for bonuses | — | 
                                                -14,228,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -3,263,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Decrease (increase) in trade receivables | — | 
                                                81,700,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -108,382,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | — | 
                                                -223,251,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -213,867,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Decrease (increase) in other assets | — | 
                                                26,349,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -42,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Increase (decrease) in other liabilities | — | 
                                                -41,822,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                48,091,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from investing activities | |||||
| Purchase of property, plant and equipment | — | 
                                                -185,348,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -85,317,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) investing activities | — | 
                                                -144,391,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -125,427,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Loan advances | — | 
                                                -2,210,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -3,410,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Proceeds from collection of loans receivable | — | 
                                                1,877,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,050,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from facilities maintenance and investing activities | |||||
| Cash flows from financing activities | |||||
| Dividends paid | — | 
                                                -61,379,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -54,870,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Proceeds from long-term borrowings | — | 
                                                800,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                300,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Repayments of long-term borrowings | — | 
                                                -310,465,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -240,720,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) financing activities | — | 
                                                338,155,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                384,409,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net increase (decrease) in cash and cash equivalents | — | 
                                                -29,486,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                45,114,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash and cash equivalents | 
                                                478,597,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                508,084,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                462,970,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |