Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings (Loss) per Share
Net income (loss)	$ (7,356)	$ 9,439	$ (3,499)	$ 18,789
Less: preferred stock dividends	0	0	0	175
Net income (loss) available to common stockholders	$ (7,356)	$ 9,439	$ (3,499)	$ 18,614
Weighted average common shares (in shares)	52,104,994	45,236,264	52,088,239	45,165,248
Earnings (loss) per share (in dollars per share)	$ (0.14)	$ 0.21	$ (0.07)	$ 0.41
Dilutive Earnings (Loss) Per Share
Net income (loss) available to common stockholders	$ (7,356)	$ 9,439	$ (3,499)	$ 18,614
Weighted average common shares (in shares)	52,104,994	45,236,264	52,088,239	45,165,248
Effect of dilutive shares (in shares)	0	975,516	0	994,577
Weighted average dilutive common shares (in shares)	52,104,994	46,211,780	52,088,239	46,159,825
Diluted earnings (loss) per share (in dollars per share)	$ (0.14)	$ 0.20	$ (0.07)	$ 0.40
Stock-based awards not included because to do so would be antidilutive (in shares)	2,417,205	403,722	2,417,205	424,972