Summary of Significant Accounting Policies - Shares Used in Computation of Basic and Diluted Per Share Information (Detail) - shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Weighted average number of shares outstanding for basic per share calculation (in shares)	30,539,343	31,195,305	31,092,417
Effect of dilutive potential shares:
Nonvested restricted stock (in shares)	120,384	201,353	273,348
Adjusted weighted average shares for diluted per share calculation (in shares)	30,659,727	31,396,658	31,365,765
Antidilutive shares (in shares)	87,333	117,238	1,155