GMFS Transaction (Schedule of Intangible Assets Acquired) (Details) (GMFS, LLC [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Business Acquisition [Line Items]
Estimated Fair Value	$ 5.8
Trade Name [Member]
Business Acquisition [Line Items]
Estimated Fair Value	2.0
Estimated Useful Life	10 years
Customer Relationships [Member]
Business Acquisition [Line Items]
Estimated Fair Value	1.3
Estimated Useful Life	10 years
Licenses [Member]
Business Acquisition [Line Items]
Estimated Fair Value	1.0
Estimated Useful Life	3 years
Favorable Lease [Member]
Business Acquisition [Line Items]
Estimated Fair Value	$ 1.5
Estimated Useful Life	12 years