Consolidated Statement of Stockholders Equity, , Series A and Series B Convertible Preferred Stock - 9 months ended Sep. 30, 2018 - USD ($) shares in Thousands, $ in Thousands	Series A Convertible Preferred stock	Series B Convertible Preferred stock	Common Stock	Treasury Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Total
Balance at the beginning of the period at Dec. 31, 2017			$ 11		$ 158,738	$ (55,617)	$ (40)	$ 103,092
Balance at the beginning of the period (in shares) at Dec. 31, 2017			106,275
Balance at the beginning of the period at Dec. 31, 2017	$ 0	$ 0
Increase (decrease) in equity
Share-based compensation					13,169			13,169
Restricted stock vesting			136
Shares repurchased related to share-based compensation				$ (19)				(19)
Shares repurchased related to share-based compensation (in shares)			(3)	3
Issuance of preferred stock - temporary equity	38,549	26,159
Issuance of preferred stock					4,638			4,638
Issuance of preferred stock (in shares)			414
Deemed dividends - accretion of beneficial conversion feature					(271)			(271)
Deemed dividends - accretion of beneficial conversion feature - temporary equity	271
Net loss						(30,362)		(30,362)
Balance at the end of the period at Sep. 30, 2018			$ 11	$ (19)	$ 176,274	(86,019)		$ 90,247
Balance at the end of the period (in shares) at Sep. 30, 2018			106,822	3
Balance at the end of the period at Sep. 30, 2018	$ 38,820	$ 26,159
Increase (decrease) in equity
Adoption of ASU 2016-01						$ (40)	$ 40