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Income Taxes Reconciliation of Amount of Tax at Statutory Rate to Effective Rate (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Tax (provision) at Federal statutory rate	$ (2,798)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	$ (2,642)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
State income tax (provision), net of federal benefit	(257)us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes	(293)us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
Research and development tax credits	549us-gaap_IncomeTaxReconciliationTaxCreditsResearch	616us-gaap_IncomeTaxReconciliationTaxCreditsResearch
Foreign earnings or losses taxed at different rates	(102)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential	(170)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential
Other	383us-gaap_IncomeTaxReconciliationOtherAdjustments	8us-gaap_IncomeTaxReconciliationOtherAdjustments
Change in valuation allowance	(408)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	(109)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
(Provision) for income taxes	$ (2,633)us-gaap_IncomeTaxExpenseBenefit	$ (2,590)us-gaap_IncomeTaxExpenseBenefit

X

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h))

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-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph h

-Article 4



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Income Tax Expense (or Benefit)

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-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

+ References

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit).

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