Net Income Per Share - Computation of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Numerator for basic and diluted income per common share:
Net income	$ 17,473	$ 27,410
Less: Net income allocated to unvested participating restricted stock	(512)	(679)
Net income available to common stockholders - basic	16,961	26,731
Effect of unvested participating restricted stock in two-class calculation	0	1
Net income available to common stockholders - diluted	$ 16,961	$ 26,732
Denominator:
Weighted average outstanding shares of common stock - basic (in shares)	14,980	15,304
Dilutive effect of stock options (in shares)	0	35
Weighted average outstanding shares of common stock - diluted (in shares)	14,980	15,339
Net income per common share:
Basic (USD per share)	$ 1.13	$ 1.75
Diluted (USD per share)	$ 1.13	$ 1.74