Earnings Per Common Share - Calculation of Basic and Diluted EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Numerator:
Net (loss) income	$ 19,325	$ 16,053
Less: Net income allocated to participating securities	(75)	(86)
Numerator for basic and diluted earnings available to common stockholders	$ 19,250	$ 15,967
Denominator:
Weighted-average basic common shares outstanding (in shares)	95,161	88,010
Weighted-average diluted common shares outstanding (in shares)	95,161	88,010
Earnings per common share, basic (in usd per share)	$ 0.20	$ 0.18
Earnings per common share, diluted (in usd per share)	$ 0.20	$ 0.18