Consolidated Statements of Changes in Stockholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning Balance at Dec. 31, 2010	$ 45,947	$ 135	$ 264,511	$ (974)	$ (217,725)
Beginning Balance, Common Stock Shares at Dec. 31, 2010		135,241,609
Settlement of accounts payable and accrued expenses, Common Stock Shares		145,440
Settlement of accounts payable and accrued expenses	71	0	71	0	0
Equity-based compensation, Common Stock Shares		255,254
Equity-based compensation	377	1	376	0	0
Net comprehensive loss	(8,430)	0	0	585	(9,015)
Ending Balance at Dec. 31, 2011	37,965	136	264,958	(389)	(226,740)
Ending Balance, Common Stock Shares at Dec. 31, 2011		135,642,303
Settlement of accounts payable, Common Stock Shares		1,111,397
Settlement of accounts payable	384	1	383	0	0
Shares sold at the market, Common Stock Shares		29,496,743
Shares sold at the market	23,003	29	22,974	0	0
Equity-based compensation, Common Stock Shares		239,747
Equity-based compensation	356	0	356	0	0
Net comprehensive loss	(17,008)	0	0	346	(17,354)
Ending Balance at Dec. 31, 2012	44,700	166	288,671	(43)	(244,094)
Ending Balance, Common Stock Shares at Dec. 31, 2012		166,490,190
Settlement of accounts payable, Common Stock Shares		1,196,769
Settlement of accounts payable	269	1	268	0	0
Shares sold at the market, Common Stock Shares		973,411
Shares sold at the market	249	1	248	0	0
Equity-based compensation, Common Stock Shares		0
Equity-based compensation	376	0	376	0	0
Net comprehensive loss	(16,296)	0	0	(71)	(16,225)
Ending Balance at Dec. 31, 2013	$ 29,298	$ 168	$ 289,563	$ (114)	$ (260,319)
Ending Balance, Common Stock Shares at Dec. 31, 2013		168,660,370