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Earnings Per Share - Calculation of Basic Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Earnings Per Share [Abstract]
Net income	$ 8,271	$ 8,102	$ 4,983	$ 4,909	$ 16,373	$ 9,892
Less: distributed earnings allocated to participating securities	(21)		(14)		(42)	(29)
Less: undistributed earnings allocated to participating securities	(48)		(23)		(96)	(46)
Net earnings available to common shareholders	$ 8,202		$ 4,946		$ 16,235	$ 9,817
Weighted average common shares outstanding including participating securities	13,065,975		11,191,043		13,066,123	11,194,011
Less: average unvested restricted shares	(108,849)		(84,125)		(110,004)	(85,353)
Weighted average common shares outstanding	12,957,126		11,106,918		12,956,119	11,108,658
Basic earnings per share	$ 0.63		$ 0.44		$ 1.25	$ 0.88
Diluted earnings per share	$ 0.63		$ 0.44		$ 1.25	$ 0.88

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