CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 16,575	$ 13,574
Restricted cash	1,106	1,152
Receivables (net of allowance of $878 and $1,200)	102,426	102,540
Revenue recognized in excess of billings on uncompleted contracts	15,631	9,911
Inventories	118,297	118,348
Deferred income taxes - current	16,331	19,190
Other current assets	13,766	13,226
Total current assets	284,132	277,941
Property, plant and equipment, net	253,791	234,549
Intangibles	8,114	7,579
Goodwill	26,833	26,839
Deferred income taxes - long-term	2,397	2,805
Other assets	3,094	3,277
Total assets	578,361	552,990
Current liabilities:
Accounts payable and accrued liabilities	73,482	72,437
Billings in excess of revenue recognized on uncompleted contracts	3,950	4,183
Payroll and benefits payable	9,320	12,178
Accrued income taxes	801	923
Short-term debt	35,065	22,894
Current portion of long-term debt	2,572	3,372
Total current liabilities	125,190	115,987
Long-term debt	284	1,103
Deferred income taxes - long-term	12,192	14,771
Accrued pension and other liabilities	46,139	44,012
Total liabilities	183,805	175,873
Commitments and contingencies (Note 7)
Shareholders' equity:
Common shares, $.01 par value, 100,000,000 shares authorized, 59,541,949 and 59,381,636 shares issued	595	594
Additional paid-in capital	176,102	174,074
Retained earnings	265,861	247,239
Accumulated other comprehensive loss	(16,311)	(13,517)
Total of shareholder's equity before adjusting treasury stock	426,247	408,390
Treasury stock, at cost, 3,128,203 and 3,100,419 shares	(31,691)	(31,273)
Total shareholders' equity	394,556	377,117
Total liabilities and shareholders' equity	$ 578,361	$ 552,990