Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 433,996	$ 505,157
Notes receivable	5,620	8,750
Accounts receivable, less allowances of $8,031 at 2016 and $7,533 at 2015	418,923	371,757
Inventories at lower of cost or market:
Finished goods	357,073	297,967
Work in process	24,856	26,666
Raw materials and supplies	92,752	87,928
Inventories at lower of cost or market	474,681	412,561
Other current assets	33,347	36,405
Total current assets	1,366,567	1,334,630
Property, plant and equipment:
Land and land improvements	49,763	49,782
Buildings	278,462	277,034
Machinery and equipment	1,632,094	1,637,637
Molds, cores and rings	238,073	236,370
Total property, plant and equipment	2,198,392	2,200,823
Less: accumulated depreciation	1,399,303	1,405,625
Net property, plant and equipment	799,089	795,198
Goodwill	18,851	18,851
Intangibles, net of accumulated amortization of $65,766 at 2016 and $62,274 at 2015	132,782	133,490
Restricted cash	820	802
Deferred income tax assets	133,877	136,310
Other assets	16,487	16,895
Total assets	2,468,473	2,436,176
Current liabilities:
Notes payable	7,737	12,437
Accounts payable	202,217	215,850
Accrued liabilities	192,176	199,368
Income taxes payable	29,427	4,748
Current portion of long-term debt	600	600
Total current liabilities	432,157	433,003
Long-term debt	295,837	296,412
Postretirement benefits other than pensions	249,917	249,650
Pension benefits	298,505	304,621
Other long-term liabilities	135,578	132,594
Deferred income tax liabilities	$ 2,159	$ 2,285
Equity:
Preferred stock, $1 par value; 5,000,000 shares authorized; none issued
Common stock, $1 par value; 300,000,000 shares authorized; 87,850,292 shares issued	$ 87,850	$ 87,850
Capital in excess of par value	18,238	16,306
Retained earnings	2,149,087	2,095,923
Cumulative other comprehensive loss	(506,937)	(509,767)
Parent stockholders' equity before treasury stock	1,748,238	1,690,312
Less: common shares in treasury at cost (32,477,615 at 2016 and 32,017,754 at 2015)	(731,850)	(711,064)
Total parent stockholders' equity	1,016,388	979,248
Noncontrolling shareholder interest in consolidated subsidiary	37,932	38,363
Total equity	1,054,320	1,017,611
Total liabilities and equity	$ 2,468,473	$ 2,436,176