CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets:
Accounts receivable, net	$ 66,805	$ 46,852
Inventories	101,827	100,449
Deferred income taxes	12,840	12,840
Income taxes receivable from Contran		670
Income taxes receivable from tax authorities	24	58
Prepaid expenses and other	1,327	1,911
Total current assets	182,823	162,780
Property, plant and equipment:
Land	1,411	1,468
Buildings and improvements	61,705	62,548
Machinery and equipment	325,904	324,623
Construction in progress	3,557	3,073
Total property, plant and equipment gross	392,577	391,712
Less accumulated depreciation	299,790	298,000
Net property, plant and equipment	92,787	93,712
Other assets:
Pension asset	111,210	102,962
Other, net	1,348	1,375
Total other assets	112,558	104,337
Total assets	388,168	360,829
Current liabilities:
Current maturities of long-term debt	47,214	34,403
Accounts payable	13,186	8,424
Accrued OPEB cost	1,194	1,194
Income taxes payable to Contran	1,104
Other accrued liabilities	23,492	27,356
Total current liabilities	86,190	71,377
Noncurrent liabilities:
Long-term debt	1,044	1,031
Accrued pension cost	27,973	27,862
Accrued OPEB cost	53,218	53,040
Deferred income taxes	31,691	27,707
Other	2,615	2,409
Total noncurrent liabilities	116,541	112,049
Stockholders' equity:
Common stock	121	121
Additional paid-in capital	99,024	99,024
Accumulated other comprehensive loss	(175,675)	(177,042)
Retained earnings	261,967	255,300
Total stockholders' equity	185,437	177,403
Total liabilities and stockholders' equity	388,168	360,829
Commitments and contingencies (Note 5)