Stock Compensation - Schedule of Stock Options and Stock Appreciation Rights (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Number of Shares Underlying Awards
Outstanding, beginning of the period (in shares)	926,898	751,973
Granted (in shares)	201,535	181,800
Exercised (in shares)	0	0
Forfeited and expired (in shares)	(146,109)	(6,875)
Outstanding, ending of the period (in shares)	982,324	926,898	751,973
Exercisable, ending balance (in shares)	721,869	445,449
Vested and expected to vest, ending balance (in shares)	982,324	926,898
Weighted-Average Exercise Price - Time-Based Options
Outstanding, beginning balance (in dollars per share)	$ 8.72	$ 10.52
Granted (in dollars per share)	7.15	4.37
Exercised (in dollars per share)	0	0
Forfeited or expired (in dollars per share)	4.66	9.78
Outstanding, ending balance (in dollars per share)	9.38	8.72	$ 10.52
Exercisable (in dollars per share)	10.57	3.69
Vested and expected to vest, ending balance (in dollars per share)	$ 9.38	$ 8.72
Weighted-Average Remaining Contractual Term
Outstanding	7 years 2 months 4 days	8 years 2 months 4 days	8 years 10 months 28 days
Granted	9 years 4 months 13 days	0 years
Exercised	0 years	0 years
Forfeited or expired	8 years 7 months 17 days	0 years
Exercisable	6 years 9 months 10 days	7 years 10 months 28 days
Vested and expected to vest	7 years 2 months 4 days	8 years 2 months 4 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)	75,625	158,125
Granted (in shares)	30,300	9,350
Exercised (in shares)	0	0
Forfeited or expired (in shares)	0	(91,850)
Outstanding, end of the period (in shares)	105,925	75,625	158,125
Exercisable end of the period (in shares)	103,125	0
Vested and expected to vest end of the period (in shares)	105,925	75,625
Weighted-Average Exercise Price - SARs
Outstanding, beginning balance (in dollars per share)	$ 9.83	$ 12.00
Granted (in dollars per share)	7.35	2.39
Exercised (in dollars per shares)	0	0
Forfeited or expired (in dollars per share)	0	10.88
Outstanding, ending balance (in dollars per share)	9.12	9.83	$ 12.00
Exercisable, ending balance (in dollars per share)	8.92	0
Vested and expected to vest, ending balance (in dollars per share)	$ 9.12	$ 9.83
Weighted-Average Remaining Contractual Term - SARs
Outstanding	6 years 9 months	7 years 9 months	8 years 8 months 15 days
Granted	9 years 2 months 26 days	0 years
Exercisable	6 years 8 months 4 days	0 years
Vested and expected to vest	6 years 9 months	7 years 9 months
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