Net Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net Income Per Share
Net income	$ 19,215	$ 6,520	$ 44,397	$ 13,573
Preferred stock dividend	(338)	(338)	(1,014)	(1,014)
Distributions to participating securities	(133)	(109)	(369)	(256)
Net income attributable to common stockholders used to compute net income per share	$ 18,744	$ 6,073	$ 43,014	$ 12,303
Weighted average common share outstanding:
Basic	21,594,637	10,918,477	18,315,231	10,088,036
Diluted	21,708,725	11,057,697	18,429,228	10,225,574
Net income attributable to common stockholders per share:
Basic	$ 0.87	$ 0.56	$ 2.35	$ 1.22
Diluted	$ 0.86	$ 0.55	$ 2.33	$ 1.20