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Earnings Per Share Narrative (Details)	3 Months Ended
Earnings Per Share Narrative (Details)	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Outstanding stock options	2,169,440	2,300,000	1,903,177
Antidilutive securities excluded from EPS computation	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	192,163	241,578

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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