Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 120,462	$ 145,290
Accounts receivable, less allowances (2018 - $5,449; 2017 - $5,143)	378,790	348,943
Inventories	251,047	241,962
Prepaid expenses and other current assets	55,943	32,526
Total current assets	806,242	768,721
Deferred income taxes	14,857	12,161
Property, plant and equipment	822,056	835,341
Less accumulated depreciation	(468,754)	(476,043)
Property, plant and equipment, net	353,302	359,298
Goodwill	671,926	690,223
Other intangible assets, net	485,528	507,042
Other assets	31,045	28,271
Total assets	2,362,900	2,365,716
Current liabilities
Notes and overdrafts payable	22,400	5,669
Accounts payable	130,849	127,521
Accrued liabilities	202,209	181,241
Long-term debt - current	2,662	1,330
Total current liabilities	358,120	315,761
Long-term debt	565,193	525,597
Accrued retirement benefits	84,652	89,000
Deferred income taxes	70,296	73,505
Long-term tax liability	72,305	79,770
Other liabilities	19,171	21,762
Commitments and contingencies (Note 14)
Stockholders' equity
Common stock - par value $0.01 per share Authorized: 150,000,000 shares Issued: at par value (2018 - 63,067,123 shares; 2017 - 63,034,240 shares)	631	630
Additional paid-in capital	463,317	457,365
Treasury stock, at cost (2018 - 11,614,337 shares; 2017 - 9,656,369 shares)	(416,288)	(297,998)
Retained earnings	1,302,640	1,206,723
Accumulated other non-owner changes to equity	(157,137)	(106,399)
Total stockholders' equity	1,193,163	1,260,321
Total liabilities and stockholders' equity	$ 2,362,900	$ 2,365,716