Consolidated Statements of Comprehensive Loss (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net loss	$ (5,159)us-gaap_NetIncomeLoss	$ (2,703)us-gaap_NetIncomeLoss	$ (3,785)us-gaap_NetIncomeLoss
Other comprehensive income (loss):
Foreign currency translation adjustment	83	(37)	(14)
Unrealized holding gain (loss) arising during period, net of tax	7	(3)	1
Realized loss on marketable securities	203
Other comprehensive income (loss):	293	(40)	(13)
Comprehensive loss	$ (4,866)us-gaap_ComprehensiveIncomeNetOfTax	$ (2,743)us-gaap_ComprehensiveIncomeNetOfTax	$ (3,798)us-gaap_ComprehensiveIncomeNetOfTax

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.

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