CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
CURRENT ASSETS:
Cash and cash equivalents	$ 21,640	$ 33,426
Customer receivables, net of allowance for doubtful accounts of $365 and $431 in 2014 and 2013, respectively	73,463	51,382
Other receivables	9,832	8,138
Inventories	45,309	39,329
Deferred income taxes	3,805	3,806
Prepaid expenses and other current assets	12,000	11,894
Assets held for sale	0	1,293
Total current assets	166,049	149,268
PROPERTY, PLANT AND EQUIPMENT, net	218,527	219,624
OTHER ASSETS:
Goodwill	100,697	100,697
Other intangible assets, net	123,411	125,430
Deferred financing costs, net of accumulated amortization of $4,006 and $3,649 in 2014 and 2013, respectively	6,083	6,440
Deferred income taxes	488	503
Other	11,501	9,815
TOTAL	626,756	611,777
CURRENT LIABILITIES:
Accounts payable	63,061	47,527
Accrued payroll and compensation	10,443	8,763
Accrued interest payable	5,127	12,535
Accrued workers compensation	4,364	4,373
Accrued and other liabilities	16,123	16,801
Total current liabilities	99,118	89,999
LONG-TERM DEBT	340,446	330,183
DEFERRED INCOME TAXES	17,792	17,528
NON-CURRENT INCOME TAXES PAYABLE	8,367	8,367
OTHER POSTRETIREMENT BENEFIT PLAN LIABILITY	70,841	70,584
PENSION BENEFIT PLAN LIABILITY	19,637	20,687
OTHER LIABILITIES	11,665	12,545
COMMITMENTS AND CONTINGENCIES (Note 7)
STOCKHOLDERS' EQUITY:
Preferred Stock, $0.01 par value; 10,000,000 shares authorized	0	0
Common Stock, $0.01 par value; 80,000,000 shares authorized, 47,702,504 and 47,515,155 shares issued and outstanding at March 31, 2014 and December 31, 2013, respectively, and additional paid-in-capital	440,725	440,479
Accumulated other comprehensive loss	(18,379)	(18,712)
Accumulated deficiency	(363,456)	(359,883)
Total stockholders' equity	58,890	61,884
TOTAL	$ 626,756	$ 611,777