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Income Taxes Income Tax Provision Included in Other Income Expense on Consolidated Statement of Operations (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Federal	$ 190us-gaap_CurrentFederalTaxExpenseBenefit	$ 370us-gaap_CurrentFederalTaxExpenseBenefit	$ 361us-gaap_CurrentFederalTaxExpenseBenefit
State	284	362	335
Federal	0	(47)	118
State	(14)	(40)	202
Provision for income taxes	$ 460us-gaap_IncomeTaxExpenseBenefit	$ 645us-gaap_IncomeTaxExpenseBenefit	$ 1,016us-gaap_IncomeTaxExpenseBenefit

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.