CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Total
BALANCE at Dec. 31, 2011	$ 141,377	$ 19,535	$ (82,860)	$ 167,689	$ (6,716)	$ 239,025
BALANCE (in shares) at Dec. 31, 2011	28,548,274
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	0	0	0	(37,186)	0	(37,186)
Employee pension plan adjustments, net of taxes	0	0	0	0	(60)	(60)
Stock-based compensation expense
Restricted stock	0	3,982	0	0	0	3,982
Restricted stock (in shares)	1,213,621
Stock options	0	358	0	0	0	358
Tax deficiency of stock-based awards and canceled	0	(667)	0	0	0	(667)
Net share settlement for equity-based compensation	0	(531)	0	0	0	(531)
Net share settlement for equity-based compensation (in shares)	(102,438)
Cash dividend	0	0	0	(6,444)	0	(6,444)
BALANCE at Dec. 31, 2012	141,377	22,677	(82,860)	124,059	(6,776)	198,477
BALANCE (in shares) at Dec. 31, 2012	29,659,457
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	0	0	0	(51,286)	0	(51,286)
Employee pension plan adjustments, net of taxes	0	0	0	0	3,214	3,214
Stock-based compensation expense
Restricted stock	0	2,893	0	0	0	2,893
Restricted stock (in shares)	400,779
Stock options	0	102	0	0	0	102
Tax deficiency of stock-based awards and canceled	0	(698)	0	0	0	(698)
Net share settlement for equity-based compensation	0	(797)	0	0	0	(797)
Net share settlement for equity-based compensation (in shares)	(140,475)
Cash dividend	0	0	0	(6,709)	0	(6,709)
BALANCE at Dec. 31, 2013	141,377	24,177	(82,860)	66,064	(3,562)	145,196
BALANCE (in shares) at Dec. 31, 2013	29,919,761					29,919,761
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	0	0	0	(56,133)	0	(56,133)
Employee pension plan adjustments, net of taxes	0	0	0	0	(3,905)	(3,905)
Stock-based compensation expense
Restricted stock	0	2,517	0	0	0	2,517
Restricted stock (in shares)	158,308
Stock options	0	104	0	0	0	104
Net share settlement for equity-based compensation	0	(448)	0	0	0	(448)
Net share settlement for equity-based compensation (in shares)	(144,983)
Cash dividend	0	0	0	(4,321)	0	(4,321)
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					29,933,086