XML 64 R52.htm IDEA: XBRL DOCUMENT v3.20.2
STOCK-BASED COMPENSATION: - Time-vesting restricted stock unit, narrative (Details) - Restricted stock units
$ in Millions
3 Months Ended
Jun. 30, 2020
USD ($)
shares
Time Based Vesting  
Share-based compensation  
Granted (in shares) | shares 1,604,733
Aggregate fair value of restricted stock units granted $ 60.7
Vested in period, fair value $ 18.1
Vesting in four years  
Share-based compensation  
Vesting period 4 years