CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings (Accumulated Deficit) [Member]	Accumulated Other Comprehensive Loss [Member]	Total
BALANCE at Dec. 31, 2014	$ 141,377	$ 26,350	$ (82,860)	$ 5,610	$ (7,467)	$ 83,010
BALANCE (in shares) at Dec. 31, 2014	29,933,086
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	$ 0	0	0	(11,907)	0	(11,907)
Employee pension plan adjustments, net of taxes	0	0	0	0	694	694
Stock-based compensation expense
Restricted stock	$ 0	852	0	0	0	852
Restricted stock (in shares)	(106,269)
Stock options	$ 0	33	0	0	0	33
Net share settlement for equity-based compensation	$ 0	(104)	0	0	0	(104)
Net share settlement for equity-based compensation (in shares)	(49,075)
BALANCE at Sep. 30, 2015	$ 141,377	27,131	(82,860)	(6,297)	(6,773)	72,578
BALANCE (in shares) at Sep. 30, 2015	29,777,742
BALANCE at Dec. 31, 2015	$ 141,377	27,292	(82,860)	2,260	(7,072)	$ 80,997
BALANCE (in shares) at Dec. 31, 2015	29,727,555					29,727,555
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	$ 0	0	0	(9,677)	0	$ (9,677)
Employee pension plan adjustments, net of taxes	0	0	0	0	666	666
Stock-based compensation expense
Restricted stock	$ 0	1,086	0	0	0	1,086
Restricted stock (in shares)	1,079,267
Net share settlement for equity-based compensation	$ 0	(107)	0	0	0	(107)
Net share settlement for equity-based compensation (in shares)	(38,389)
BALANCE at Sep. 30, 2016	$ 141,377	$ 28,271	$ (82,860)	$ (7,417)	$ (6,406)	$ 72,965
BALANCE (in shares) at Sep. 30, 2016	30,768,433					30,768,433