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Stock-Based Compensation - Schedule of Information Related to Outstanding SOSARS (Detail) - Stock Only Stock Appreciation Rights (SOSARs) [Member] - $ / shares
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Beginning Balance, Outstanding 1,291,947 2,334,742
Exercised (44,710) (283,060)
Canceled / forfeited (2,841) (258,439)
Ending Balance, Outstanding 1,244,396 1,793,243
Beginning Balance, Weighted Average Exercise Price, Outstanding $ 20.05 $ 18.08
Weighted Average Exercise Price, Exercised 12.94 13.95
Weighted Average Exercise Price, Canceled / forfeited 17.27 20.82
Ending Balance, Weighted Average Exercise Price, Outstanding $ 20.31 $ 18.96