CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Shares $0.01 Per Share	Paid-in Capital	Accumulated Other Comprehensive Income	Retained Earnings	Treasury Shares	Total
Balance, Beginning at Dec. 31, 2013	$ 183	$ 69,049	$ 3,472	$ 197,020	$ (12)	$ 269,712
Balance, Beginning (in shares) at Dec. 31, 2013	18,294,998				(1,235,055)
Increase (Decrease) in Shareholders' Equity
Issuance of restricted stock units	$ 1	(1)
Issuance of restricted stock units (in shares)	100,474
Tax withholding on restricted stock units		(601)			$ (1)	(602)
Tax withholding on restricted stock units(in shares)					(31,298)
Share-based compensation		3,081				3,081
Dividends				(6,123)		(6,123)
Net loss				(47,235)		(47,235)
Foreign currency translation adjustment			(6,015)			(6,015)
Balance, Ending at Dec. 31, 2014	$ 184	71,528	(2,543)	143,662	$ (13)	212,818
Balance, Ending (in shares) at Dec. 31, 2014	18,395,472				(1,266,353)
Increase (Decrease) in Shareholders' Equity
Issuance of restricted stock units	$ 2	(2)
Issuance of restricted stock units (in shares)	175,939
Tax withholding on restricted stock units		(429)				(429)
Tax withholding on restricted stock units(in shares)					(43,782)
Share-based compensation		3,744				3,744
Dividends				(1,562)		(1,562)
Net loss				(78,729)		(78,729)
Foreign currency translation adjustment			(5,075)			(5,075)
Balance, Ending at Dec. 31, 2015	$ 186	74,841	(7,618)	63,371	$ (13)	$ 130,767
Balance, Ending (in shares) at Dec. 31, 2015	18,571,411				(1,310,135)	18,571,411
Increase (Decrease) in Shareholders' Equity
Issuance of restricted stock units	$ 2	(2)
Issuance of restricted stock units (in shares)	283,998
Tax withholding on restricted stock units		(267)				$ (267)
Tax withholding on restricted stock units(in shares)					(59,333)
Share-based compensation		2,136				2,136
Dividend equivalent				6		6
Net loss				(43,613)		(43,613)
Foreign currency translation adjustment			(1,895)			(1,895)
Balance, Ending at Dec. 31, 2016	$ 188	$ 76,708	$ (9,513)	$ 19,764	$ (13)	$ 87,134
Balance, Ending (in shares) at Dec. 31, 2016	18,855,409				(1,369,468)	18,855,409