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	216				216
Transfer of director compensation from liability to equity					40
Issuance of restricted stock (in shares)			243,620
Comprehensive loss	(13,899)					(12,029)	(1,870)
Balances - ending at Mar. 31, 2017	321,502	$ 0	$ 5	(3,885)	475,854	(144,229)	(6,243)
Balances- ending (in shares) at Mar. 31, 2017		1	50,942,207
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	509				509
Issuance of restricted stock (in shares)			53,513
Comprehensive loss	(7,720)					(12,967)	5,156	91
Balances - ending at Mar. 31, 2018	$ 408,869	$ 0	$ 5	$ (3,885)	$ 533,524	$ (121,696)	$ (7,613)	$ 8,534
Balances- ending (in shares) at Mar. 31, 2018		1	51,055,747