Earnings Per Common Share - Computation of Basic and Diluted Earnings Per Common Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share [Abstract]
Net earnings	$ 16,033	$ 13,302	$ 43,639	$ 62,731
Less earnings attributable to RSUs outstanding	(546)	(458)	(1,639)	(1,465)
Net earnings attributable to common stockholders used in basic earnings per share calculation	15,487	12,844	42,000	61,266
Net earnings attributable to common stockholders used in diluted earnings per share calculation	$ 15,487	$ 12,844	$ 42,000	$ 61,266
Basic	50,621	46,734	49,088	46,729
Incremental shares from stock-based compensation	91	45	49	38
Incremental shares from ATM Program forward agreements			124
Incremental shares from the February 2023 Forward Offering			40
Diluted	50,712	46,779	49,301	46,767
Basic earnings per common share	$ 0.31	$ 0.27	$ 0.86	$ 1.31
Diluted earnings per common share	$ 0.31	$ 0.27	$ 0.85	$ 1.31