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Condensed Consolidated Balance Sheets (Uaudited) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Current assets:    
Cash and cash equivalents $ 20,357 $ 20,142
Short-term investments 907 1,060
Accounts receivable - net 63,050 56,419
Inventories - net 77,630 73,193
Deferred income taxes and other current assets 5,173 5,058
Total current assets 167,117 155,872
Property, plant and equipment 230,915 226,408
Less accumulated depreciation 114,753 112,059
Property, plant and equipment - net 116,162 114,349
Other assets 3,996 2,998
Goodwill and other intangible assets 25,262 25,481
Total assets 312,537 298,700
Current liabilities:    
Accounts payable 18,269 15,679
Short-term debt 10,000 10,000
Payroll and related liabilities 10,362 10,283
Commissions payable 5,733 7,757
Accrued expenses 11,576 7,154
Total current liabilities 55,940 50,873
Postretirement benefits 22,898 22,705
Pension benefits 6,941 6,571
Deferred and other income taxes 3,718 3,787
Total liabilities 89,497 83,936
Common shares, without par value: Authorized - 35,000,000 shares Outstanding - 20,990,893 shares in 2012 and 2011 (after deducting treasury shares of 648,603 in 2012 and 2011) at stated capital amount 5,128 5,128
Additional paid-in capital 2,544 2,544
Retained earnings 231,488 223,136
Accumulated other comprehensive loss (16,120) (16,044)
Total shareholders' equity 223,040 214,764
Total liabilities and shareholders' equity $ 312,537 $ 298,700