Consolidated Balance Sheets (unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 25,092	$ 23,551
Trade receivables, net	53,996	43,094
Inventories, net	101,407	71,221
Prepaid expenses and other current assets	18,179	6,104
Total current assets	198,674	143,970
Property, plant and equipment, net	166,990	151,815
Goodwill	38,019	37,312
Intangible assets, net	3,993	4,091
Investments in and advances to partially-owned affiliates	13,023	15,094
Deferred income taxes	37,079	39,262
Other non-current assets	8,667	2,924
Total assets	466,445	394,468
Current liabilities:
Accounts payable	32,044	27,612
Deferred revenue	11,541	11,570
Accrued expenses and other current liabilities	43,257	43,844
Total current liabilities	86,842	83,026
Long-term debt	101,050	64,000
Deferred income taxes	19,458	18,577
Accrued pension benefits	54,382	55,373
Other non-current liabilities	18,383	10,195
Total liabilities	280,115	231,171
Stockholders' equity:
Common stock, $.10 par value; authorized 100,000,000, issued 31,982,229 and 31,704,230 shares at respective dates	3,199	3,169
Additional paid-in capital	107,528	104,173
Retained earnings	122,279	105,263
Treasury stock, at cost, 1,790,873 and 1,795,082 shares at respective dates	(15,269)	(15,217)
Accumulated other comprehensive loss	(31,407)	(34,091)
Total stockholders' equity	186,330	163,297
Total liabilities and stockholders' equity	$ 466,445	$ 394,468