Income Taxes (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2010
Income Tax Examination [Line Items]
Equity Method Investment Ownership Percentage Acquired				21.10%
Valuation Allowance, Deferred Tax Asset, Change in Amount	$ 619	$ 0
Income tax benefit	58	800	(7,034)
Correction of Immaterial Errors
Income Tax Examination [Line Items]
Increase (Decrease) in Deferred Tax Assets			(10,350)
Review of Realizability of Deferred Tax Assets
Income Tax Examination [Line Items]
Valuation Allowance, Deferred Tax Asset, Change in Amount			(6,493)
Income tax benefit			(6,493)
Review of Realizability of Remaining Deferred Tax Assets
Income Tax Examination [Line Items]
Income tax benefit			$ (1,178)