Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 91,134	$ 79,145
Accounts receivable, less allowances (2021 - $6,208; 2020 - $6,348)	260,203	251,460
Inventories	235,537	238,008
Prepaid expenses and other current assets	77,795	73,732
Total current assets	664,669	642,345
Deferred income taxes	21,899	22,092
Property, plant and equipment	912,206	910,378
Less accumulated depreciation	(554,803)	(539,431)
Property, plant and equipment, net	357,403	370,947
Goodwill	986,061	1,011,580
Other intangible assets, net	534,836	564,132
Other assets	62,003	65,130
Total assets	2,626,871	2,676,226
Current liabilities
Notes and overdrafts payable	14	2,115
Accounts payable	124,458	112,428
Accrued liabilities	180,978	178,560
Long-term debt - current	1,983	2,276
Total current liabilities	307,433	295,379
Long-term debt	654,483	699,868
Accrued retirement benefits	93,633	98,171
Deferred income taxes	76,507	91,668
Long-term tax liability	52,114	59,063
Other liabilities	52,308	49,400
Commitments and contingencies
Stockholders' equity
Common stock - par value $0.01 per share Authorized: 150,000,000 shares Issued: at par value (2021 - 64,199,988 shares; 2020 - 64,171,321 shares)	642	642
Additional paid-in capital	507,354	501,531
Treasury stock, at cost (2021 - 13,633,675 shares; 2020 - 13,530,074 shares)	(522,412)	(516,992)
Retained earnings	1,547,435	1,519,811
Accumulated other non-owner changes to equity	(142,626)	(122,315)
Total stockholders' equity	1,390,393	1,382,677
Total liabilities and stockholders' equity	$ 2,626,871	$ 2,676,226