Earnings (Loss) Per Share - Stock Repurchase Program and Dividends (Details) - USD ($)	1 Months Ended	3 Months Ended				6 Months Ended
	Nov. 30, 2018	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share [Abstract]
Approved stock repurchase amount	$ 100,000,000
Period of approved stock repurchase program	2 years
Amount spent to repurchase shares				$ 19,600,000		$ 7,500,000	$ 30,700,000
Number of shares repurchased and retired (in shares)			259,910	725,105	403,598	260,000	1,100,000
Cash dividend declared (in dollars per share)		$ 0.12	$ 0.12	$ 0.12	$ 0.12
Declared and paid cash dividend		$ 5,500,000	$ 5,514,000	$ 5,743,000	$ 5,811,000