CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 126,414	$ 114,863
Restricted Cash and Cash Equivalents, Current		950
Accounts receivable, less allowance for doubtful accounts of $1,656 and $1,773	79,518	78,788
Accounts receivable from joint ventures	2,374	2,142
Accounts receivable, other	2,053	2,297
Taxes receivable	2,099	5,079
Inventories	69,544	73,178
Prepaid income taxes	4,941	4,914
Deferred income taxes	6,878	7,225
Asbestos-related insurance receivables	8,195	8,195
Other current assets	7,932	8,559
Assets of discontinued operations	140	746
Total current assets	310,088	306,936
Property, plant and equipment, net of accumulated depreciation of $205,204 and $205,575	150,157	149,017
Investments in unconsolidated joint ventures	18,490	21,171
Deferred income taxes	70,454	71,439
Goodwill and other intangibles	102,045	105,041
Other intangible assets	50,321	53,288
Asbestos-related insurance receivables	40,067	40,067
Investments, other	5,000	5,000
Other long-term assets	7,820	8,065
Total assets	754,442	760,024
Current liabilities
Accounts payable	16,423	16,730
Accrued employee benefits and compensation	24,850	23,156
Accrued income taxes payable	3,748	3,135
Current portion of lease obligation	1,185	1,423
Current portion of long term debt	21,750	20,500
Asbestos-related liabilities	8,195	8,195
Other accrued liabilities	11,411	11,363
Liabilities of discontinued operations		3
Total current liabilities	87,562	84,505
Long term lease obligation	6,681	6,942
Long term debt	73,750	77,500
Pension liability	59,442	65,942
Retiree health care and life insurance benefits	10,654	10,654
Asbestos-related liabilities	43,222	43,222
Non-current income tax	19,957	19,300
Deferred income taxes	16,494	17,545
Other long-term liabilities	309	262
Shareholders' Equity
Capital Stock - $1 par value; 50,000,000 authorized shares; 17,070,133 and 16,904,441 shares outstanding	17,070	16,904
Additional paid-in capital	77,599	74,272
Retained earnings	407,880	400,784
Accumulated Other Comprehensive Income (Loss), Net of Tax	(66,178)	(57,808)
Total shareholders' equity	436,371	434,152
Total liabilities and shareholders' equity	$ 754,442	$ 760,024