CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
ASSETS
Cash and cash equivalents	$ 212,809	$ 190,718
Accounts receivable, net	158,793	171,535
Inventories	118,955	119,183
Income taxes receivable and deferred	20,156	20,594
Prepaid expenses and other current assets	12,019	10,435
Total current assets	522,732	512,465
Property, plant and equipment, net	416,446	420,154
Intangibles	674	848
Goodwill	77,950	76,522
Deferred taxes	118,334	123,886
Other assets	28,149	22,822
Total assets	1,164,285	1,156,697
LIABILITIES AND SHAREHOLDERS' EQUITY
Notes and loans payable	565	586
Accounts payable	39,161	35,117
Accrued liabilities	136,874	103,257
Current maturities of long-term debt	55,014	83,276
Income taxes payable and deferred	3,293	13,552
Total current liabilities	234,907	235,788
Long-term debt	252,115	235,877
Other noncurrent liabilities	110,048	136,012
Deferred taxes and other credits	52,998	55,509
Total liabilities	650,068	663,186
SHAREHOLDERS' EQUITY
Preferred stock, par value $5.00 per share; authorized 2,000,000 shares; none issued
Common Stock	40	40
Additional paid-in capital	399,973	395,381
Retained earnings	430,676	435,775
Accumulated items of other comprehensive income:
Translation adjustments	(3,661)	(7,659)
Pension and postretirement liability adjustments	(53,871)	(69,484)
Derivative valuation adjustment	(1,369)	(2,878)
Treasury stock (Class A), at cost 8,463,635 shares in 2013 and 8,467,873 in 2012	(257,571)	(257,664)
Total shareholders' equity	514,217	493,511
Total liabilities and shareholders' equity	1,164,285	1,156,697
Common Class A [Member]
SHAREHOLDERS' EQUITY
Common Stock	37	37
Common Class B [Member]
SHAREHOLDERS' EQUITY
Common Stock	$ 3	$ 3