Condensed Consolidated Statements of Stockholders' Deficit - USD ($) $ in Thousands	Total	IPO [Member]	Common Stock [Member]	Common Stock [Member] IPO [Member]	Treasury Stock [Member]	Additional Paid-In Capital [Member]	Additional Paid-In Capital [Member] IPO [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]
Balance at Dec. 31, 2013	$ (235,517)		$ 181		$ (106)	$ 105,655		$ (340,853)	$ (394)
Balance, (in shares) at Dec. 31, 2013			18,078,725		(5,037)
Net share option exercise	13					13
Net share option exercise, shares			2,219
Net loss	(3,561)							(3,561)
Other comprehensive loss	(1,236)								(1,236)
Stock-based compensation	1,031					1,031
Balance at Dec. 31, 2014	$ (239,270)		$ 181		$ (106)	106,699		(344,414)	(1,630)
Balance, (in shares) at Dec. 31, 2014			18,080,944		(5,037)
Treasury stock retired					$ 106	(106)
Treasury stock retired, shares					5,037
Net share option exercise, shares	0
Net loss	$ (18,662)							(18,662)
Other comprehensive loss	(817)								(817)
Issuance of common stock		$ 67,177		$ 122			$ 67,055
Issuance of common stock,shares			40,000	12,256,577
Shares withheld to cover taxes	(97)					(97)
Shares withheld to cover taxes,shares			(13,020)
Stock-based compensation	1,524					1,524
Balance at Sep. 30, 2015	$ (190,145)		$ 303			$ 175,075		$ (363,076)	$ (2,447)
Balance, (in shares) at Sep. 30, 2015			30,364,501