XML 101 R89.htm IDEA: XBRL DOCUMENT v3.10.0.1
Share Capital, Option Plans and Share-Based Payments - Summary of Outstanding Stock Options, Narrative (Details) - USD ($)
3 Months Ended 6 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Options outstanding (in shares) 7,118,527   7,118,527   7,078,435
Cash used to settle awards     $ 0 $ 0  
Capitalized amount of share-based compensation costs     0 0  
Cash proceeds from exercise of options granted $ 1,800,000 $ 3,400,000 14,200,000 19,600,000  
Tax benefit realized from exercise of options $ 15,000.0 $ 200,000 $ 900,000 $ 300,000  
Stock Options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Options outstanding (in shares) 7,118,527   7,118,527    
Common shares available for issuance (in shares) 10,297,784   10,297,784    
Expiration period of options, minimum term     7 years    
Expiration period of options, maximum term     10 years    
Unrecognized compensation cost relating to unvested stock awards $ 19,900,000   $ 19,900,000    
Unvested stock awards compensation cost, weighted average recognition period     2 years 7 months 6 days    
Stock Options | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period     4 years    
Stock Options | Maximum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period     5 years