Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - 9 months ended Sep. 30, 2015 - USD ($) $ in Thousands	Common Stock [Member]	Paid-In Capital [Member]	Accumulated Other Comprehensive Income [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2014	$ 25	$ 233,524		$ (202,154)	$ (258)	$ 31,137
Balance shares at Dec. 31, 2014	25,192,669
Net loss				(8,008)		(8,008)
Common stock issued, net of issuance costs	$ 5	5,649				5,654
Common stock issued, net of issuance costs, shares	4,160,500
Common stock issued for loan interest and fees		541				541
Common stock issued for loan interest and fees, shares	409,284
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes		793				793
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes, shares	251,569
Minimum withholding taxes on net share settlements of equity awards		(126)				(126)
Unrealized holding loss on available-for-sale securities			$ (70)			(70)
Balance at Sep. 30, 2015	$ 30	$ 240,381	$ (70)	$ (210,162)	$ (258)	$ 29,921
Balance shares at Sep. 30, 2015	30,014,022