Consolidated Statements Of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock and Additional Paid-in Capital	Treasury Stock	Accumulated Other Comprehensive Loss	Accumulated Deficit
Balance at Dec. 31, 2012	$ 11,794	$ 140,781	$ (16,399)	$ (320)	$ (112,268)
Balance, shares at Dec. 31, 2012		33,248,000
Treasury Stock Shares at Dec. 31, 2012	(1,964,000)
Exercise of stock options, net, shares	343,000	343,000
Exercise of stock options, net	$ 709	$ 709
Stock-based compensation	1,609	1,609
Non-employee equity instruments	106	106
Other compensation	250	$ 250
Issuance of stock, net, shares		3,028,000
Issuance of stock, net	5,169	$ 5,169
Warrant issued in connection with lines of credit	280	$ 280
Exercise of warrants, shares		50,000
Stock dividends		667,000
Net loss	(11,482)				(11,482)
Foreign currency translation adjustments	46			46
Balance at Dec. 31, 2013	$ 8,481	$ 148,904	(16,399)	(274)	(123,750)
Balance, shares at Dec. 31, 2013		37,336,000
Treasury Stock Shares at Dec. 31, 2013	(1,964,000)
Exercise of stock options, net, shares	153,000	153,000
Exercise of stock options, net	$ 310	$ 310
Stock-based compensation	$ 1,233	$ 1,233
Retirement of treasury stock, shares	1,964,000	(1,964,000)
Retirement of treasury stock		$ (16,399)	$ 16,399
Other compensation	$ 123	$ 123
Issuance of stock, net, shares		22,359,000
Issuance of stock, net	51,118	$ 51,118
Exercise of warrants, shares		39,000
Stock dividends		192,000
Net loss	(18,926)				(18,926)
Foreign currency translation adjustments	(283)			(283)
Balance at Dec. 31, 2014	$ 42,056	$ 185,289		(557)	(142,676)
Balance, shares at Dec. 31, 2014	58,115,000	58,115,000
Exercise of stock options, net, shares	38,000	113,000
Exercise of stock options, net	$ 44	$ 44
Stock-based compensation	3,350	3,350
Cost of issuance	(3)	(3)
Net loss	(20,278)				(20,278)
Foreign currency translation adjustments	(244)			(244)
Balance at Dec. 31, 2015	$ 24,925	$ 188,680		$ (801)	$ (162,954)
Balance, shares at Dec. 31, 2015	58,228,000	58,228,000