Stock-based Compensation Plans - Additional Information 3 (Detail) - USD ($) |
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] | ||||
Stock-based compensation (income) expense | $ 10,153,000 | $ 11,016,000 | $ 19,375,000 | $ 22,181,000 |
Performance-based PS-PSUs and RS-PSUs | ||||
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||||
Vesting period | 3 years | |||
Stock-based compensation (income) expense | $ (1.8) | 1,700,000 | ||
Performance Based TSR - PSUs | ||||
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||||
Vesting period | 3 years | |||
Stock-based compensation expense | $ 1.5 | $ 1,300,000 |