Earnings Per Share Narrative (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Outstanding stock options	2,163,727	2,300,000	2,163,727	2,300,000	1,903,177
Antidilutive securities excluded from EPS computation	500,000	700,000	500,000	0
Performance Vested Restricted Stock Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
PVRSUs excluded from EPS calculation due to performance conditions not met			213,119	222,385