Earnings (Loss) Per Share (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Earnings Per Share [Abstract]
Incremental common shares attributable to dilutive effect of share-based payment arrangements (in shares)	1,000,000	900,000	920,000	925,000
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	1,000	1,000	3,000	3,000
Number of repurchased shares (in shares)			415,695
Cost of repurchased stock			$ 18,000,000		$ 0