CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Treasury Stock	Additional Paid-in-Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Non-Controlling Interest
Balances - beginning at Dec. 31, 2016	$ 335,145	$ 0	$ 5	$ (3,885)	$ 475,598	$ (132,200)	$ (4,373)
Balances - beginning (in shares) at Dec. 31, 2016		1	50,698,587
Increase (Decrease) in Stockholders' Equity
Stock-based compensation	806				806
Transfer of director compensation from liability to equity					80
Issuance of restricted stock (in shares)			300,499
Settlement of Dow Liabilities, net of income tax	55,089				55,089
Comprehensive loss	(19,707)					(9,422)	(10,285)
Balances - ending at Jun. 30, 2017	371,413	$ 0	$ 5	(3,885)	531,573	(141,622)	(14,658)
Balances- ending (in shares) at Jun. 30, 2017		1	50,999,086
Balances - beginning at Dec. 31, 2017	416,080	$ 0	$ 5	(3,885)	533,015	(108,729)	(12,769)	$ 8,443
Balances - beginning (in shares) at Dec. 31, 2017		1	51,002,234
Increase (Decrease) in Stockholders' Equity
Stock-based compensation	1,740				1,740
Issuance of stock, net of forfeitures (in shares)			146,109
Comprehensive loss	(41,343)					(31,351)	(10,065)	73
Balances - ending at Jun. 30, 2018	$ 376,477	$ 0	$ 5	$ (3,885)	$ 534,755	$ (140,080)	$ (22,834)	$ 8,516
Balances- ending (in shares) at Jun. 30, 2018		1	51,148,343