Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Numerator:
Net income (loss)		$ 25,429	$ (850)	$ 29,354
Less: preferred stock distributions		440	440	440
Net income (loss) available to common shareholders		$ 24,989	$ (1,290)	$ 28,914
Denominator:
Weighted average shares for basic earnings per share		13,553,168	14,482,164	14,426,739
Weighted average shares for diluted earnings per share		13,666,408	14,482,164	14,664,330
Basic	[1]	$ 1.84	$ (0.09)	$ 2
Diluted	[1]	$ 1.83	$ (0.09)	$ 1.97
Restricted Stock
Denominator:
Non-vested restricted stock, units and options		0	0	11,016
Restricted Stock Units
Denominator:
Non-vested restricted stock, units and options		49,616	0	120,936
Stock Options
Denominator:
Non-vested restricted stock, units and options		63,624	0	105,639

[1] For the year ended December 31, 2022, “weighted average shares outstanding - basic” was used to calculate “diluted earnings per share” due to a net loss for the period.