XML 77 R64.htm IDEA: XBRL DOCUMENT v3.20.2
Equity Incentive Plans and Stock-Based Compensation (Details 4) - Nonvested equity stock units and stock units - $ / shares
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Nonvested Equity Stock and Stock Units        
Nonvested at the beginning of the period (in shares)     5,289,483  
Granted (in shares) 100,000 300,000 1,872,547 3,700,000
Vested (in shares)     (1,330,009)  
Forfeited (in shares)     (431,636)  
Nonvested at the end of the period (in shares) 5,400,385   5,400,385  
Weighted-Average Grant-Date Fair Value        
Nonvested at the beginning of the period (in dollars per share)     $ 11.27  
Weighted-average fair value of purchase rights granted under the purchase plan     15.65  
Vested (in dollars per share)     11.38  
Forfeited (in dollars per share)     11.50  
Nonvested at the end of the period (in dollars per share) $ 12.75   $ 12.75