Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 15,243	$ 13,101
Accounts receivable, net	207,998	215,211
Inventories, net	434,485	423,080
Prepaid and other current assets	42,128	39,056
Total current assets	699,854	690,448
Deferred income taxes	3,335	3,265
Property, plant, and equipment	1,198,350	1,209,205
Less allowances for depreciation, depletion, and amortization	(728,788)	(760,440)
Property, plant, and equipment, net	469,562	448,765
Operating lease, right-of-use assets	62,352	64,249
Intangible assets, net	140,430	143,219
Other assets	22,183	22,535
Goodwill	320,268	319,498
Total Assets	1,717,984	1,691,979
Current liabilities
Short-term debt	27,727	21,105
Accounts payable	126,866	107,899
Salaries and wages	22,077	35,543
Other liabilities and accrued items	44,186	54,993
Income taxes	4,669	3,928
Unearned revenue	20,292	15,496
Total current liabilities	245,817	238,964
Other long-term liabilities	14,255	12,181
Operating lease liabilities	57,424	59,055
Finance lease liabilities	14,068	13,876
Retirement and post-employment benefits	20,738	20,422
Unearned income	109,883	107,736
Long-term income taxes	812	665
Deferred income taxes	27,511	28,214
Long-term debt	405,482	410,876
Shareholders’ equity
Serial preferred stock (no par value; 5,000 authorized shares, none issued)	0	0
Common stock (no par value; 60,000 authorized shares, issued shares of 27,148 at March 31 and December 31)	297,802	288,100
Retained earnings	792,421	769,418
Common stock in treasury	(231,906)	(220,864)
Accumulated other comprehensive loss	(41,626)	(41,909)
Other equity	5,303	5,245
Total shareholders' equity	821,994	799,990
Total Liabilities and Shareholders’ Equity	$ 1,717,984	$ 1,691,979