CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 14,554	$ 18,161
Receivables (net of allowance of $1,447 and $1,362)	110,864	101,918
Revenue recognized in excess of billings on uncompleted contracts	11,143	14,680
Inventories	105,581	107,166
Deferred income taxes - current	16,169	17,317
Other current assets	12,189	13,964
Total current assets	270,500	273,206
Property, plant and equipment, net	262,078	262,993
Intangibles, net	6,990	7,388
Goodwill	26,354	27,030
Deferred income taxes - long-term	3,579	3,558
Other assets	3,396	3,594
Total assets	572,897	577,769
Current liabilities:
Accounts payable and accrued liabilities	65,231	76,214
Restructuring reserve (Note 1)	1,164	3,226
Billings in excess of revenue recognized on uncompleted contracts	5,833	3,865
Payroll and benefits payable	9,259	10,114
Accrued income taxes	1,545	2,666
Short-term debt	16,107	19,565
Total current liabilities	99,139	115,650
Long-term debt	48,053	44,408
Deferred income taxes - long-term	12,306	12,379
Accrued pension and other liabilities	56,050	54,035
Total liabilities	215,548	226,472
Commitments and contingencies (Note 8)
Shareholders' equity:
Common shares, $.01 par value, 100,000,000 shares authorized, 56,644,575 and 56,450,632 shares issued	566	564
Additional paid-in capital	171,266	168,599
Retained earnings	280,325	270,511
Accumulated other comprehensive loss	(22,619)	(16,527)
Total of shareholders' equity before adjusting treasury stock	429,538	423,147
Treasury stock, at cost, 6,435,765 and 6,415,176 shares	(72,189)	(71,850)
Total shareholders' equity	357,349	351,297
Total liabilities and shareholders' equity	$ 572,897	$ 577,769