Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - PSUs to be Settled in Common Stock (Details)

v3.20.2
Stock-Based Compensation - PSUs to be Settled in Common Stock (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Non-cash stock compensation expense $ 21,980 $ 14,484 $ 36,892 $ 27,496
Performance Stock Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Required performance period     3 years  
Performance units granted (in shares) 0   400,000 300,000
Weighted average grant date fair value (in dollars per share)     $ 34.56 $ 40.15
Non-cash stock compensation expense $ 7,800 $ 1,900 $ 10,700 $ 3,600
Performance units vested (in shares) 0 0 200,000 200,000
Number of common shares issued in connection with performance units (in shares) 0 0 500,000 400,000
Performance Stock Units | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Performance units performance percentage     0.00%  
Performance Stock Units | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Performance units performance percentage     200.00%