Issued Shares
| Concept | As at 2020-03-31 | As at 2020-03-31 | As at 2020-03-31 | As at 2020-03-31 | As at 2020-03-31 | As at 2020-03-31 | As at 2020-03-31 | 
|---|---|---|---|---|---|---|---|
| Issued shares | |||||||
| Issued shares | |||||||
| Number of shares | 
                                                20,111,598
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                22,798
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                105,700
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                19,983,100
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
| Number of voting rights | 
                                                199,831
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | — | — | — | 
                                                199,831
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Description | — |  |  |  |  |  |  |