Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 84,900	$ 79,145
Accounts receivable, less allowances (2021 - $6,394; 2020 - $6,348)	252,548	251,460
Inventories	233,465	238,008
Prepaid expenses and other current assets	77,490	73,732
Total current assets	648,403	642,345
Deferred income taxes	21,653	22,092
Property, plant and equipment	896,096	910,378
Less accumulated depreciation	(539,824)	(539,431)
Property, plant and equipment, net	356,272	370,947
Goodwill	971,851	1,011,580
Other intangible assets, net	541,148	564,132
Other assets	60,937	65,130
Total assets	2,600,264	2,676,226
Current liabilities
Notes and overdrafts payable	7,507	2,115
Accounts payable	118,756	112,428
Accrued liabilities	169,277	178,560
Long-term debt - current	2,051	2,276
Total current liabilities	297,591	295,379
Long-term debt	664,015	699,868
Accrued retirement benefits	94,066	98,171
Deferred income taxes	88,117	91,668
Long-term tax liability	59,063	59,063
Other liabilities	46,045	49,400
Commitments and contingencies (Note 16)
Stockholders' equity
Common stock - par value $0.01 per share Authorized: 150,000,000 shares Issued: at par value (2021 - 64,183,161 shares; 2020 - 64,171,321 shares)	642	642
Additional paid-in capital	503,937	501,531
Treasury stock, at cost (2021 - 13,531,343 shares; 2020 - 13,530,074 shares)	(517,060)	(516,992)
Retained earnings	1,531,065	1,519,811
Accumulated other non-owner changes to equity	(167,217)	(122,315)
Total stockholders' equity	1,351,367	1,382,677
Total liabilities and stockholders' equity	$ 2,600,264	$ 2,676,226