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Consolidated Statements of Comprehensive Loss (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Statements Of Comprehensive Loss [Abstract]      
Net loss $ (13,080) $ (9,287) $ (17,145)
Other comprehensive income (loss):      
Foreign currency translation gain (loss) 6 (8) 76
Total comprehensive loss $ (13,074) $ (9,295) $ (17,069)