Condensed Consolidated Statements Shareholders' Equity - USD ($)	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Accumulated other comprehensive income/(loss) [Member]	Total
Balances, beginning of period at Dec. 31, 2013	$ 404,470,000	$ 32,487,000	$ (393,885,000)	$ (59,000)	$ 43,013,000
Beginning Balance, shares at Dec. 31, 2013	82,275,217
Shares issued (RSUs vested)	$ 115,000
Stock-based compensation	442,000	684,000			1,126,000
Other comprehensive loss				70,000	70,000
Net income (loss)			(18,926,000)		(18,926,000)
Balances, end of period at Dec. 31, 2014	$ 404,912,000	33,171,000	(412,811,000)	11,000	25,283,000
Ending Balance, shares at Dec. 31, 2014	82,390,217
Shares issued (RSUs vested)	$ 493,345
Stock-based compensation	174,000	513,000			687,000
Other comprehensive loss				(48,000)	(48,000)
Net income (loss)			3,178,000		3,178,000
Balances, end of period at Sep. 30, 2015	$ 405,086,000	$ 33,684,000	$ (409,633,000)	$ (37,000)	$ 29,100,000
Ending Balance, shares at Sep. 30, 2015	82,883,562