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Stock-Based Compensation - Schedule of Information Related to Outstanding SOSARS (Detail) - Stock Only Stock Appreciation Rights (SOSARs) [Member] - $ / shares
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Beginning Balance, Outstanding 1,082,413 1,291,947
Granted
Exercised (58,460)
Canceled / forfeited (104,801)
Ending Balance, Outstanding 1,082,413 1,128,686
Beginning Balance, Weighted Average Exercise Price, Outstanding $ 20.40 $ 20.05
Weighted Average Exercise Price, Granted
Weighted Average Exercise Price, Exercised 12.85
Weighted Average Exercise Price, Canceled / forfeited 21.57
Ending Balance, Weighted Average Exercise Price, Outstanding $ 20.40 $ 20.28