Earnings Per Share - Basic and diluted earnings per share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Numerator
Net income (loss) attributable to common stockholders	$ 2,418	$ (3,717)
Less: Net income allocable to participating preferred stock	914	0
Net income (loss) allocable to common stockholders	$ 1,504	$ (3,717)
Denominator
Weighted average number of common stock outstanding (in shares)	51,031,457	50,525,781
Basic earnings (loss) per share (in dollars per share)	$ 0.03	$ (0.07)
Numerator
Net income (loss) allocable to common stockholder	$ 1,504	$ (3,717)
Denominator
Common stock outstanding	51,031,457	50,525,781
Dilutive effect of restricted stock and restricted stock (in shares)	1,264,831	0
Weighted number of shares used for diluted earnings (loss) per share (in shares)	52,296,288	50,525,781
Diluted earnings (loss) per share (in dollars per share)	$ 0.03	$ (0.07)