Condensed Consolidated Statements of Equity (USD $) In Thousands, except Share data	Total		Common Stock	Additional Paid-in Capital	Treasury Stock	Accumulated Deficit	Accumulated Other Comprehensive Income	Noncontrolling Interest
Beginning Balances at Dec. 31, 2012
Other comprehensive loss							$ (152)
Ending Balances at Dec. 31, 2013	24,744	[1]	75	348,845	(2,777)	(320,876)	1,227	(1,750)
Beginning Balances (in shares) at Dec. 31, 2013			75,079,000
Net loss	(5,169)					(5,128)		(41)
Other comprehensive loss	109						107	2
Issuance of common stock in connection with capital raise, net of issuance costs	2,601		3	2,598
Issuance of common stock in connection with capital raise, net of issuance costs (in shares)			3,169,000
Issuance of common stock in connection with ESPP	35			35
Issuance of common stock in connection with ESPP (in shares)			72,000
Issuance of common stock in connection with stock bonus and incentive plans	54			54
Issuance of common stock in connection with stock bonus and incentive plans (in shares)			61,000
Issuance of common stock in connection with exercise of options	2			2
Issuance of common stock in connection with exercise of options (in shares)			3,000
Stock-based compensation expense for stock options	200		27	200
Issuance of warrants in connection with secured debt facility	824			824
Ending Balances at Mar. 31, 2014	$ 23,400		$ 78	$ 352,558	$ (2,777)	$ (326,004)	$ 1,334	$ (1,789)
Ending Balances (in shares) at Mar. 31, 2014			78,411,000

[1] The condensed consolidated balance sheet has been derived from the audited consolidated financial statements at December 31, 2013 but does not include all the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements.