Stock-Based Incentive Plan - Status of Options Granted Under Long-Term Incentive Plan (Detail) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($) $ / shares shares
Shares Under Option
Shares under option, outstanding, beginning balance | shares	294,111
Shares under option, forfeited | shares	(14,487)
Shares under option, exercised | shares	(6,210)
Shares under option, outstanding, ending balance | shares	273,414
Shares under options, exercisable at September 30, 2023 | shares	273,414
Weighted Average Exercise Price Per Share [Abstract]
Weighted average exercise price per share, outstanding, beginning balance | $ / shares	$ 26.11
Weighted average exercise price per share, outstanding, forfeited | $ / shares	28.35
Weighted average exercise price per share, outstanding, exercised | $ / shares	18.48
Weighted average exercise price per share, outstanding, ending balance | $ / shares	26.16
Weighted average exercise price per share, exercisable at September 30, 2023 | $ / shares	$ 26.16
Weighted average remaining contractual life, outstanding at September 30, 2023	3 years 4 months 24 days
Weighted average remaining contractual life, exercisable at September 30, 2023	3 years 4 months 24 days
Aggregated intrinsic value, outstanding at September 30, 2023 | $	$ 0
Aggregated intrinsic value, exercisable at September 30, 2023 | $	$ 0