Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 82,165	$ 78,889
Receivables, less allowance for doubtful accounts of $530 in 2013 and $519 in 2012	49,215	54,394
Inventories	70,616	70,669
Insurance receivables - asbestos	20,000	18,400
Other current assets	13,317	15,230
Total current assets	235,313	237,582
Property, plant and equipment, net	149,991	150,297
Insurance receivables - asbestos	89,683	99,715
Deferred income tax assets	26,143	25,800
Investments in joint ventures	12,764	13,319
Other noncurrent assets	6,904	6,466
Total Assets	520,798	533,179
Current liabilities:
Accounts payable	16,322	15,839
Accrued payrolls and employee benefits	8,121	9,301
Industrial Revenue Bond debt	13,311	13,311
Asbestos liability - current portion	26,000	23,500
Other current liabilities	22,583	24,473
Total current liabilities	86,337	86,424
Employee benefit obligations	95,704	96,100
Asbestos liability	148,464	157,522
Other noncurrent liabilities	1,142	1,040
Total liabilities	331,647	341,086
Commitments and contingent liabilities (Note 6)
Shareholders' equity:
Common stock - par value $1; authorized 20,000 shares; issued and outstanding 10,346 shares in 2013 and 2012	10,346	10,346
Additional paid-in capital	124,710	124,464
Retained earnings	137,922	139,658
Accumulated other comprehensive loss	(83,827)	(82,375)
Total shareholders' equity	189,151	192,093
Total Liabilities and Shareholders' Equity	$ 520,798	$ 533,179