Earnings (Loss) Per Share - Stock Repurchase Program and Dividends (Details) - USD ($)	1 Months Ended	3 Months Ended				9 Months Ended
	Nov. 30, 2018	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 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			$ 20,000,000.0			$ 7,500,000	$ 50,700,000
Number of shares repurchased and retired (in shares)		259,910	762,543	725,105	403,598	260,000	1,900,000