Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 25, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 117,754	$ 125,007
Accounts receivable, net	150,454	154,751
Inventories, net	211,700	190,390
Prepaid and other current assets	24,515	21,839
Total current assets	504,423	491,987
Deferred income taxes	5,156	1,666
Property, plant, and equipment	987,902	916,965
Less allowances for depreciation, depletion, and amortization	(693,223)	(684,689)
Property, plant, and equipment, net	294,679	232,276
Operating lease right-of-use assets	62,235	23,413
Intangible assets	54,449	6,380
Other assets	20,754	17,937
Goodwill	143,118	79,011
Total Assets	1,084,814	852,670
Current liabilities
Short-term Debt	122,216	868
Accounts payable	56,524	43,206
Salaries and wages	24,853	41,167
Other liabilities and accrued items	42,238	32,477
Income taxes	1,435	1,342
Unearned revenue	4,360	3,380
Total current liabilities	251,626	122,440
Other long-term liabilities	10,057	11,560
Operating lease liabilities	56,891	18,091
Finance lease liabilities	20,540	17,424
Retirement and post-employment benefits	40,208	32,466
Unearned income	72,632	32,891
Long-term income taxes	3,365	3,451
Deferred income taxes	11,340	2,410
Long-term debt	6,374	1,260
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 September 25 and December 31)	257,019	249,674
Retained earnings	592,980	589,888
Common stock in treasury	(199,185)	(186,845)
Accumulated other comprehensive loss	(42,781)	(45,462)
Other equity	3,748	3,422
Total shareholders' equity	611,781	610,677
Total Liabilities and Shareholders’ Equity	$ 1,084,814	$ 852,670