Income Taxes (Schedule of Provision for (Benefit from) Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current provision:
Federal
State	41	22	16
Foreign	219us-gaap_CurrentForeignTaxExpenseBenefit	128us-gaap_CurrentForeignTaxExpenseBenefit	95us-gaap_CurrentForeignTaxExpenseBenefit
Total current	260us-gaap_CurrentIncomeTaxExpenseBenefit	150us-gaap_CurrentIncomeTaxExpenseBenefit	111us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred (benefit):
Federal			(2,937)
State			(470)
Foreign		62	(193)
Total deferred		62us-gaap_DeferredIncomeTaxExpenseBenefit	(3,600)us-gaap_DeferredIncomeTaxExpenseBenefit
Total provision (benefit)	$ 260us-gaap_IncomeTaxExpenseBenefit	$ 212us-gaap_IncomeTaxExpenseBenefit	$ (3,489)us-gaap_IncomeTaxExpenseBenefit

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

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