CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 126,455	$ 235,850
Accounts receivable, less allowance for credit losses of $1,147 and $1,007	185,750	177,413
Contract assets	46,476	38,853
Inventories	157,073	182,402
Prepaid income taxes	3,337	4,042
Asbestos-related insurance receivables, current portion	3,881	3,881
Other current assets	31,825	17,426
Total current assets	554,797	659,867
Property, plant and equipment, net of accumulated depreciation of $391,898 and $381,584	341,696	358,415
Investments in unconsolidated joint ventures	10,346	14,082
Deferred income taxes	58,922	50,649
Goodwill	352,214	352,365
Other intangible assets, net of amortization	124,496	133,724
Pension assets	5,523	5,251
Asbestos-related insurance receivables, non-current portion	55,926	55,926
Other long-term assets	16,946	15,935
Total assets	1,520,866	1,646,214
Current liabilities
Accounts payable	46,852	57,342
Accrued employee benefits and compensation	33,778	34,158
Accrued income taxes payable	7,018	5,504
Asbestos-related liabilities, current portion	4,968	4,968
Finance lease obligations, current portion	345	498
Other accrued liabilities	23,176	40,067
Total current liabilities	116,137	142,537
Borrowings under revolving credit facility	80,000	215,000
Pension and other postretirement benefits liabilities	1,618	1,501
Asbestos-related liabilities, non-current portion	59,739	60,065
Finance lease obligations, non-current portion	1,147	1,295
Non-current income tax	9,560	9,985
Deferred income taxes	23,720	23,557
Other long-term liabilities	18,333	19,808
Commitments and contingencies (Note 10 and Note 12)
Shareholders’ equity
Capital stock - $1 par value; 50,000 authorized shares; 18,616 and 18,574 shares issued and outstanding	18,616	18,574
Additional paid-in capital	148,992	140,702
Retained earnings	1,131,848	1,098,454
Accumulated other comprehensive loss	(88,844)	(85,264)
Total shareholders' equity	1,210,612	1,172,466
Total liabilities and shareholders' equity	$ 1,520,866	$ 1,646,214
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other long-term assets	Other long-term assets
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other accrued liabilities	Other accrued liabilities
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other accrued liabilities	Other accrued liabilities
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other long-term liabilities	Other long-term liabilities
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other long-term liabilities	Other long-term liabilities