Consolidated Statement of Comprehensive Loss (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net loss	$ (18,673)us-gaap_NetIncomeLoss	$ (9,249)us-gaap_NetIncomeLoss	$ (2,362)us-gaap_NetIncomeLoss
Other comprehensive income (loss):
Foreign currency translation adjustments	(104)	1	2
Comprehensive loss	$ (18,777)us-gaap_ComprehensiveIncomeNetOfTax	$ (9,248)us-gaap_ComprehensiveIncomeNetOfTax	$ (2,360)us-gaap_ComprehensiveIncomeNetOfTax

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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