Summary of Significant Accounting Policies (Long-Lived Assets) (Details)	12 Months Ended
	Dec. 31, 2014
Minimum
Finite-Lived Intangible Assets [Line Items]
Intangible assets straight-line method amortization period	2 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Intangible assets straight-line method amortization period	10 years