Net Income Per Share - Computations of net income per basic and diluted share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net income	$ 40,214	$ 29,339	$ 75,264	$ 55,266
Preferred stock dividends	(338)	(338)	(676)	(676)
Distribution to participating securities	(207)	(137)	(409)	(263)
Net income attributable to common stockholders used to compute net income per share - basic	39,669	28,864	74,179	54,327
Dilutive effect of Exchangeable Senior Notes	68	1,879	402	3,752
Net income attributable to common stockholders used to compute net income per share - diluted	$ 39,737	$ 30,743	$ 74,581	$ 58,079
Weighted-average common shares outstanding:
Basic	27,850,561	23,889,761	26,741,568	23,889,580
Dilutive effect of Exchangeable Senior Notes	103,742	2,182,691	304,348	2,182,691
Diluted	28,036,690	26,168,682	27,159,774	26,166,494
Net income attributable to common stockholders per share:
Basic	$ 1.42	$ 1.21	$ 2.77	$ 2.27
Diluted	$ 1.42	$ 1.17	$ 2.75	$ 2.22
Restricted stock and RSUs
Weighted-average common shares outstanding:
Restricted stock and RSUs	82,387	96,230	113,858	94,223