Consolidated Balance Sheets - USD ($)	Mar. 31, 2022	Dec. 31, 2021
ASSETS
Cash and cash equivalents	$ 307,415,000	$ 302,036,000
Accounts receivable, net	207,555,000	191,985,000
Contract assets, net	112,262,000	112,546,000
Inventories	123,835,000	117,882,000
Income taxes prepaid and receivable	126,000	1,958,000
Prepaid expenses and other current assets	37,387,000	32,394,000
Total current assets	788,580,000	758,801,000
Property, plant and equipment, net	431,860,000	436,417,000
Intangibles, net	37,170,000	39,081,000
Goodwill	180,785,000	182,124,000
Deferred income taxes	20,317,000	26,376,000
Noncurrent receivables, net	30,982,000	31,849,000
Other assets	90,367,000	81,416,000
Total assets	1,580,061,000	1,556,064,000
LIABILITIES AND SHAREHOLDERS' EQUITY
Accounts payable	64,501,000	68,954,000
Accrued liabilities	108,855,000	124,325,000
Current maturities of long-term debt	0	0
Income taxes payable	4,711,000	14,887,000
Total current liabilities	178,067,000	208,166,000
Long-term debt	427,000,000	350,000,000
Other noncurrent liabilities	99,498,000	107,794,000
Deferred taxes and other liabilities	11,244,000	12,499,000
Total liabilities	715,809,000	678,459,000
SHAREHOLDERS' EQUITY
Preferred stock	0	0
Additional paid in capital	437,748,000	436,996,000
Retained earnings	884,133,000	863,057,000
Accumulated items of other comprehensive income:
Translation adjustments	(107,610,000)	(105,880,000)
Pension and postretirement liability adjustments	(38,416,000)	(38,490,000)
Derivative valuation adjustment	8,404,000	(1,614,000)
Treasury stock	(324,080,000)	(280,143,000)
Total Company shareholders' equity	860,220,000	873,967,000
Noncontrolling interest	4,032,000	3,638,000
Total equity	864,252,000	877,605,000
Total liabilities and shareholders' equity	1,580,061,000	1,556,064,000
Common Class A
SHAREHOLDERS' EQUITY
Common stock, par value	41,000	41,000
Common Class B
SHAREHOLDERS' EQUITY
Common stock, par value	$ 0	$ 0