CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 22,745	$ 23,551
Trade receivables, less allowances of $1,058 and $652 at respective dates	71,276	43,094
Other receivables	12,943	2,015
Inventories, net	89,965	71,221
Prepaid expenses and other current assets	5,631	4,089
Total current assets	202,560	143,970
Property, plant and equipment, net	171,966	151,815
Goodwill	38,670	37,312
Intangible assets, net	4,011	4,091
Investments in and advances to partially-owned affiliates	13,364	15,094
Deferred income taxes	19,799	30,786
Other non-current assets	7,667	2,663
Total assets	458,037	385,731
Current liabilities:
Accounts payable	29,052	27,612
Deferred revenue	20,121	11,570
Accrued expenses and other current liabilities	48,098	43,301
Total current liabilities	97,271	82,483
Long-term debt	79,250	64,000
Deferred income taxes	12,835	10,383
Accrued pension benefits	40,123	55,373
Other non-current liabilities	18,338	10,195
Total liabilities	247,817	222,434
Commitments and contingencies (see Notes 18 and 19)
Stockholders' equity:
Common Stock, $.10 par value; authorized 100,000,000 issued 32,240,795 and 31,704,230 shares at respective dates	3,223	3,169
Additional paid-in capital	109,765	104,173
Retained earnings	131,178	105,263
Treasury stock, at cost, 1,757,530 and 1,795,082 shares at respective dates	(14,984)	(15,217)
Accumulated other comprehensive loss	(18,962)	(34,091)
Total stockholders' equity	210,220	163,297
Total liabilities and stockholders' equity	$ 458,037	$ 385,731