CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
ASSETS
Cash and cash equivalents	$ 206,836	$ 222,666
Accounts receivable, net	148,473	163,547
Inventories	123,889	112,739
Deferred income taxes	13,900	13,873
Prepaid expenses and other current assets	10,120	9,659
Total current assets	503,218	522,484
Property, plant and equipment, net	414,758	418,830
Intangibles	501	616
Goodwill	78,635	78,890
Income taxes receivable and deferred	111,942	119,612
Other assets	29,709	26,456
Total assets	1,138,763	1,166,888
LIABILITIES AND SHAREHOLDERS' EQUITY
Notes and loans payable	692	625
Accounts payable	35,698	36,397
Accrued liabilities	100,006	112,331
Current maturities of long-term debt	1,265	3,764
Income taxes payable and deferred	4,378	5,391
Total current liabilities	142,039	158,508
Long-term debt	283,104	300,111
Other noncurrent liabilities	100,940	106,014
Deferred taxes and other credits	53,302	54,476
Total liabilities	579,385	619,109
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	418,117	416,728
Retained earnings	446,570	434,598
Accumulated items of other comprehensive income:
Translation adjustments	(1,976)	(138)
Pension and postretirement liability adjustments	(48,205)	(48,383)
Derivative valuation adjustment	(1,199)	(977)
Treasury stock (Class A), at cost 8,459,498 shares in 2014 and 8,463,635 in 2013	(257,481)	(257,571)
Total Company shareholders' equity	555,866	544,297
Noncontrolling interest	3,512	3,482
Total equity	559,378	547,779
Total liabilities and shareholders' equity	1,138,763	1,166,888
Common Class A [Member]
SHAREHOLDERS' EQUITY
Common Stock	37	37
Common Class B [Member]
SHAREHOLDERS' EQUITY
Common Stock	$ 3	$ 3