Earnings (Loss) Per Common Share - Narrative (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share and Other Significant Changes in Shares [Line Items]
Weighted average shares outstanding excludes anti-dilutive shares underlying options (shares)	263,000	27,000		0	30,000
Amount of shares repurchased (shares)	0	50,000			903,544
Amount of shares repurchased		$ 0.1			$ 3.8
Amount of shares issued (shares)	16,000	0		183,460	46,896
Amount of shares issued	$ 0.1			$ 0.9	$ 0.1
Employee Stock Option [Member]
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share and Other Significant Changes in Shares [Line Items]
Weighted average shares outstanding excludes anti-dilutive shares underlying options (shares)	1,900,000		2,800,000		2,800,000
Restricted Stock Units (RSUs) [Member]
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share and Other Significant Changes in Shares [Line Items]
Weighted average shares outstanding excludes anti-dilutive shares underlying options (shares)	1,900,000		2,700,000		2,000,000