Equity - Additional Information (Detail) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) commonStockNumberOfVotePerShare $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) shares	Dec. 31, 2018 shares
Common Stock And Preferred Stock [Line Items]
Common stock, shares authorized | shares	190,000,000	190,000,000
Common stock, par value | $ / shares	$ 0.001	$ 0.001
Common stock, shares issued | shares	19,057,788	18,962,894
Common stock, shares outstanding | shares	16,991,979	16,897,085
Common stock, number of vote per share | commonStockNumberOfVotePerShare	1
Payments for Repurchase of Common Stock | $	$ 0	$ 0	$ (36,550)
Treasury Stock, Value, Acquired, Cost Method | $			$ 35,937
Stock Repurchase Program, Remaining Authorized Repurchase Amount | $	$ 98,720
Common Stock [Member]
Common Stock And Preferred Stock [Line Items]
Common stock, shares outstanding | shares	16,991,979	16,897,085	16,842,757	17,554,737
Treasury Stock, Shares, Acquired | shares			817,954
Treasury Stock, Value, Acquired, Cost Method | $			$ 0
2018 Program [Member]
Common Stock And Preferred Stock [Line Items]
Stock Repurchase Program, Authorized Amount | $	$ 150,000