Stockholders' Equity - Summary of the Companys Change in the Common Stock (Detail) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Class of Stock [Line Items]
Exercise of stock options	91,900	176,901	106,899
Voting Common Stock [Member]
Class of Stock [Line Items]
Outstanding shares of voting common stock at the beginning of year	38,005,000	37,936,000	37,640,000
Exercise of stock options	92,000	177,000	147,000
Issuance of restricted stock, net of cancellations	48,000	56,000	161,000
Shares withheld for withholding tax payments	(75,000)	(125,000)	(98,000)
Treasury shares used for acquisition			146,000
Repurchases	(151,000)	(39,000)	(60,000)
Outstanding shares of voting common stock at the end of year	37,919,000	38,005,000	37,936,000