Consolidated Statement of Stockholders' Equity - 3 months ended Mar. 31, 2017 - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Comprehensive Deficit [Member]
BALANCE at Dec. 31, 2016	$ 2,504	$ 12	$ 227,889	$ (225,397)
BALANCE, Shares at Dec. 31, 2016	12,297,954	12,298,000
Non-cash compensation recognized on stock options and ESPP	$ 13		13
Restricted stock grants, net of cancellations	433		433
Restricted stock grants, net of cancellations, shares		(129,000)
Cancellation of shares for payment of withholding tax	(72)		(72)
Cancellation of shares for payment of withholding tax, shares		(55,000)
Employee stock purchase plan	2		2
Employee stock purchase plan, shares		2,000
Comprehensive loss	(2,232)			(2,232)
BALANCE at Mar. 31, 2017	$ 648	$ 12	$ 228,265	$ (227,629)
BALANCE, Shares at Mar. 31, 2017	12,116,156	12,116,000