XML 95 R81.htm IDEA: XBRL DOCUMENT v3.20.4
Share-Based Compensation - Certain Information Regarding Company's Share-Based Compensation (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Compensation expense, Total $ 8,695 $ 13,008 $ 12,786
Deferred tax benefits, Total 877 1,754 2,830
Realized tax benefits, Total 275 1,777 8,877
Excess tax benefits (shortfall) (237) 641 5,427
Intrinsic value of options exercised 0 2,343 32,217
Vesting of performance share units 646 2,069 1,273
Cash received for strike price and tax withholdings $ 0 $ 238 $ 120
Shares acquired through cashless exercise 64 186 1,361
Value of shares acquired through cashless exercise $ 1,315 $ 6,133 $ 49,199
Stock Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Compensation expense, Stock options 4,519 6,516 7,579
Deferred tax benefits, Total 719 1,522 1,877
Realized tax benefits, Total 0 577 7,957
Excess tax benefits (shortfall) $ (209) $ 415 $ 5,330
Weighted average fair value per option or share, Stock option grants (in dollars per share) $ 3.67 $ 9.82 $ 11.74
Restricted Stock [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Compensation expense $ 514 $ 3,104 $ 609
Deferred tax benefits, Total 0 47 8
Realized tax benefits, Total 0 37 0
Excess tax benefits (shortfall) $ 0 $ (18) $ 0
Granted, weighted average grant date fair value (in dollars per share) $ 0 $ 30.73 $ 33.64
Vesting of performance share units $ 252 $ 2,783 $ 632
Performance Share Units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Compensation expense 945 2,508 4,598
Deferred tax benefits, Total 52 185 945
Realized tax benefits, Total 275 1,163 920
Excess tax benefits (shortfall) $ (28) $ 244 $ 97
Granted, weighted average grant date fair value (in dollars per share) $ 0 $ 33.47 $ 32.51
Vesting of performance share units $ 2,151 $ 5,520 $ 3,726
Restricted Stock Units (RSUs) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Compensation expense 2,717 880 0
Deferred tax benefits, Total 106 0 0
Realized tax benefits, Total 0 0 0
Excess tax benefits (shortfall) $ 0 $ 0 $ 0
Granted, weighted average grant date fair value (in dollars per share) $ 16.13 $ 26.47 $ 0
Vesting of performance share units $ 1,559 $ 657 $ 0