Stock-Based Incentive Plan - Status of Options Granted Under Long-Term Incentive Plan (Detail) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($) $ / shares shares
Shares Under Option
Shares under option, outstanding, beginning balance | shares	351,252
Shares under option, expired | shares	(1,500)
Shares under option, forfeited | shares	(3,000)
Shares under option, exercised | shares	(25,781)
Shares under option, outstanding, ending balance | shares	320,971
Shares under options, exercisable at March 31, 2022 | shares	320,971
Weighted Average Exercise Price Per Share [Abstract]
Weighted average exercise price per share, outstanding, beginning balance | $ / shares	$ 25.74
Weighted average exercise price per share, outstanding, expired | $ / shares	14.80
Weighted average exercise price per share, outstanding, forfeited | $ / shares	28.33
Weighted average exercise price per share, outstanding, exercised | $ / shares	22.33
Weighted average exercise price per share, outstanding, ending balance | $ / shares	26.05
Weighted average exercise price per share, exercisable at March 31, 2022 | $ / shares	$ 26.05
Weighted average remaining contractual life, outstanding at March 31, 2022	4 years 9 months 18 days
Weighted average remaining contractual life, exerciseable at March 31, 2022	4 years 9 months 18 days
Aggregated intrinsic value, outstanding at March 31, 2022 | $	$ 610
Aggregated intrinsic value, exercisable at March 31, 2022 | $	$ 610