Earnings per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Basic earnings per share
Net income	$ 709	$ 22,705
Average common shares outstanding (in shares)	51,803	51,359
Net income per share (in dollars per share)	$ 0.01	$ 0.44
Diluted earnings per share
Average common shares outstanding (in shares)	51,803	51,359
Add: Dilutive effect of employee restricted stock and stock options (in shares)	481	680
Average diluted shares outstanding (in shares)	52,284	52,039
Net income per share (in dollars per share)	$ 0.01	$ 0.44