Stock Compensation - Schedule of Stock Options and Stock Appreciation Rights (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Number of Shares Underlying Awards
Outstanding, beginning of the period (in shares)	751,973	1,106,875
Granted (in shares)	181,800	167,598
Exercised (in shares)	0	0
Forfeited and expired (in shares)	(6,875)	(522,500)
Outstanding, ending of the period (in shares)	926,898	751,973	1,106,875
Exercisable, ending balance (in shares)	445,449	0
Vested and expected to vest, ending balance (in shares)	926,898	751,973
Weighted-Average Exercise Price - Time-Based Options
Outstanding, beginning balance (in dollars per share)	$ 10.52	$ 12.00
Granted (in dollars per share)	4.37	5.37
Exercised (in dollars per share)	0.00	0.00
Forfeited or expired (in dollars per share)	9.78	12.00
Outstanding, ending balance (in dollars per share)	8.72	10.52	$ 12.00
Exercisable (in dollars per share)	3.69	0.00
Vested and expected to vest, ending balance (in dollars per share)	$ 8.72	$ 10.52
Weighted-Average Remaining Contractual Term
Outstanding	8 years 2 months 5 days	8 years 10 months 28 days	9 years 6 months 29 days
Granted		9 years 9 months 4 days
Exercised	0 years	0 years
Forfeited or expired	0 years	0 years
Exercisable	7 years 10 months 28 days	0 years
Vested and expected to vest	8 years 2 months 5 days	8 years 10 months 28 days
Aggregate Intrinsic Value (In thousands)
Outstanding, intrinsic value, beginning	$ 0	$ 0
Granted	0	0
Exercised	0	0
Forfeited or expired	0	0
Outstanding, intrinsic value, ending	0	0	$ 0
Exercisable, intrinsic value	0	0
Vested and expected to vest, intrinsic value	$ 0	$ 0
Weighted-Average Remaining Contractual Term - SARs
Exercised	0 years	0 years
Forfeited or expired	0 years	0 years
Stock appreciation rights (SAR)
Number of Awards
Outstanding, beginning of the period (in shares)	158,125	165,000
Granted (in shares)	9,350	0
Exercised (in shares)	0	0
Forfeitures and expirations (in shares)	91,850	6,875
Outstanding, end of the period (in shares)	75,625	158,125	165,000
Exercisable end of the period (in shares)	0	0
Vested and expected to vest end of the period (in shares)	75,625	158,125
Weighted-Average Exercise Price - SARs
Outstanding, beginning balance (in dollars per share)	$ 12.00	$ 12.00
Granted (in dollars per share)	2.39	0.00
Exercised (in dollars per shares)	0.00	0.00
Forfeited or expired (in dollars per share)	10.88	12.00
Outstanding, ending balance (in dollars per share)	9.83	12.00	$ 12.00
Exercisable, ending balance (in dollars per share)	0.00	0.00
Vested and expected to vest, ending balance (in dollars per share)	$ 9.83	$ 12.00
Weighted-Average Remaining Contractual Term - SARs
Outstanding	7 years 9 months	8 years 8 months 16 days	9 years 8 months 16 days
Granted	0 years	0 years
Exercisable	0 years	0 years
Vested and expected to vest	7 years 9 months	8 years 8 months 16 days
Aggregate Intrinsic Value (In thousands)
Intrinsic value, outstanding, beginning	$ 0	$ 0
Granted	0	0
Exercised	0	0
Forfeited or expired	0	0
Intrinsic value, outstanding, beginning	0	0	$ 0
Exercisable, intrinsic value	0	0
Vested and expected to vest, intrinsic value	$ 0	$ 0