Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 01, 2022	Dec. 31, 2021
Current assets
Cash and cash equivalents	$ 20,237	$ 14,462
Accounts receivable, net	237,712	223,553
Inventories, net	386,992	361,115
Prepaid and other current assets	27,971	28,122
Total current assets	672,912	627,252
Deferred income taxes	5,323	5,431
Property, plant, and equipment	1,149,458	1,132,223
Less allowances for depreciation, depletion, and amortization	(732,529)	(723,248)
Property, plant, and equipment, net	416,929	408,975
Operating lease, right-of-use assets	70,862	63,096
Intangible assets, net	152,922	156,736
Other assets	30,063	27,369
Goodwill	317,897	318,620
Total Assets	1,666,908	1,607,479
Current liabilities
Short-term debt	15,351	15,359
Accounts payable	103,438	86,243
Salaries and wages	21,848	37,544
Other liabilities and accrued items	47,793	53,388
Income taxes	5,624	4,205
Unearned revenue	7,407	7,770
Total current liabilities	201,461	204,509
Other long-term liabilities	16,457	14,954
Operating lease liabilities	64,569	57,099
Finance lease liabilities	15,192	16,327
Retirement and post-employment benefits	32,704	33,394
Unearned income	96,971	97,962
Long-term income taxes	1,205	1,190
Deferred income taxes	27,564	27,216
Long-term debt	479,821	434,388
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 April 1 and December 31)	278,589	271,978
Retained earnings	705,255	693,756
Common stock in treasury	(217,549)	(209,920)
Accumulated other comprehensive loss	(40,186)	(40,169)
Other equity	4,855	4,795
Total shareholders' equity	730,964	720,440
Total Liabilities and Shareholders’ Equity	$ 1,666,908	$ 1,607,479