Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - 3 months ended Mar. 31, 2017 - USD ($) $ in Thousands	Common Stock [Member]	Paid-In Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2016	$ 17	$ 280,191		$ (236,902)	$ (258)	$ 43,048
Balance shares at Dec. 31, 2016	16,667,394
Net income				1,845		1,845
Common stock issued, net of issuance costs	$ 8	13,380				13,388
Common stock issued, net of issuance costs, shares	7,673,972
Common stock issued for investor relations fees		300				300
Common stock issued for investor relations fees, shares	150,000
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes		22				22
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes, shares	2,008
Minimum withholding taxes on net share settlements of equity awards		(1)				(1)
Unrealized holding gain on marketable securities			430			430
Balance at Mar. 31, 2017	$ 25	$ 293,892	$ 430	$ (235,057)	$ (258)	$ 59,032
Balance shares at Mar. 31, 2017	24,493,374