Fair Value Measurements (Level 3 Valuation Techniques) (Details) (USD $) In Thousands, unless otherwise specified								9 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012	Sep. 30, 2014 Income Approach Valuation Technique [Member]	Sep. 30, 2014 Income Approach Valuation Technique [Member] Minimum [Member]	Sep. 30, 2014 Income Approach Valuation Technique [Member] Maximum [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs	$ 22,295	$ (39,116)	$ 6,709	$ 146	$ 3,096	$ 0	$ 22,295
Expected Volatility Rate								14.70%	23.80%