Consolidated Statements of Comprehensive Loss (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net loss	$ (7,499,000)	$ (2,592,000)	$ (4,040,000)
Other comprehensive income (loss), net:
Unrealized gain (loss) on investments	(55,000)	78,000	7,000
Reclassification of net realized investment (gains) losses included in net loss	(27,000)	18,000	(15,000)
Foreign currency translation adjustment	(77,000)	6,000	(4,000)
Total other comprehensive (loss) income	(159,000)	102,000	(12,000)
Comprehensive loss	$ (7,658,000)	$ (2,490,000)	$ (4,052,000)