CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 199,109	$ 191,785
Accounts receivable, less allowance for credit losses of $1,310 and $1,682	144,049	134,421
Contract assets	30,936	26,575
Inventories	106,706	102,360
Prepaid income taxes	2,854	2,960
Asbestos-related insurance receivables, current portion	2,986	2,986
Other current assets	19,140	13,088
Total current assets	505,780	474,175
Property, plant and equipment, net of accumulated depreciation of $364,239 and $365,844	267,041	272,378
Investments in unconsolidated joint ventures	14,948	15,248
Deferred income taxes	28,018	28,667
Goodwill	266,437	270,172
Other intangible assets, net of amortization	114,373	118,026
Pension assets	5,486	5,278
Asbestos-related insurance receivables, non-current portion	63,807	63,807
Other long-term assets	16,330	16,254
Total assets	1,282,220	1,264,005
Current liabilities
Accounts payable	52,342	35,987
Accrued employee benefits and compensation	42,331	41,708
Accrued income taxes payable	7,629	8,558
Asbestos-related liabilities, current portion	3,615	3,615
Other accrued liabilities	23,645	21,641
Total current liabilities	129,562	111,509
Borrowings under revolving credit facility	4,000	25,000
Pension and other postretirement benefits liabilities	1,635	1,612
Asbestos-related liabilities, non-current portion	69,559	69,620
Non-current income tax	15,572	16,346
Deferred income taxes	9,229	8,375
Other long-term liabilities	11,808	10,788
Commitments and contingencies (Note 10 and Note 12)
Shareholders’ equity
Capital stock - $1 par value; 50,000 authorized shares; 18,712 and 18,677 shares issued and outstanding	18,712	18,677
Additional paid-in capital	150,004	147,961
Retained earnings	904,910	873,692
Accumulated other comprehensive loss	(32,771)	(19,575)
Total shareholders' equity	1,040,855	1,020,755
Total liabilities and shareholders' equity	$ 1,282,220	$ 1,264,005