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 Income (Loss)
Balances - beginning at Dec. 31, 2015	$ 443,903	$ 0	$ 5	$ (2,397)	$ 472,494	$ (20,640)	$ (5,559)
Balances - beginning (in shares) at Dec. 31, 2015		1	49,940,548
Increase (Decrease) in Stockholders' Equity
Stock-based compensation	2,901				2,901
Issuance of restricted stock (in shares)			644,395
Repurchase of stock for treasury	(1,488)			(1,488)	0
Comprehensive loss	(38,370)					(42,989)	4,619
Balances - ending at Sep. 30, 2016	406,946	$ 0	$ 5	(3,885)	475,395	(63,629)	(940)
Balances- ending (in shares) at Sep. 30, 2016		1	50,584,943
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	1,318				1,318
Transfer of director compensation from liability to equity	332				332
Issuance of restricted stock (in shares)			302,808
Settlement of Dow liabilities, net of income tax	55,089				55,089
Comprehensive loss	(7,961)					124	(8,085)
Balances - ending at Sep. 30, 2017	$ 383,923	$ 0	$ 5	$ (3,885)	$ 532,337	$ (132,076)	$ (12,458)
Balances- ending (in shares) at Sep. 30, 2017		1	51,001,395