Condensed Consolidated Statements of Comprehensive Loss (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net loss	$ (1,707,000)	$ (2,066,000)	$ (4,329,000)	$ (3,713,000)
Other comprehensive (loss) income, net:
Unrealized (loss) gain on investments	(61,000)	(8,000)	(98,000)	55,000
Foreign currency translation adjustment	(22,000)	(142,000)	(86,000)	(100,000)
Total other comprehensive loss	(83,000)	(150,000)	(184,000)	(45,000)
Comprehensive loss	$ (1,790,000)	$ (2,216,000)	$ (4,513,000)	$ (3,758,000)