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CONDENSED BALANCE SHEETS (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Current Assets    
Cash and cash equivalents    $ 81,056 [1]
Short-term investments       [1]
Trade receivables, net    42,225 [1]
Gross inventories    49,004 [1]
Less LIFO reserve    (37,476) [1]
Less excess and obsolescence reserve    (1,311) [1]
Net inventories    10,217 [1]
Deferred income taxes    5,776 [1]
Prepaid expenses and other current assets    6,968 [1]
Total Current Assets    146,242 [1]
Property, plant and equipment    169,142 [1]
Less allowances for depreciation    (116,195) [1]
Net property, plant and equipment    52,947 [1]
Deferred income taxes    32 [1]
Other assets    7,289 [1]
Total Assets    206,510 [1]
Current Liabilities    
Trade accounts payable and accrued expenses    28,592 [1]
Product liability    1,305 [1]
Employee compensation and benefits    14,882 [1]
Workers' compensation    4,600 [1]
Income taxes payable    217 [1]
Total Current Liabilities    49,596 [1]
Accrued pension liability    19,082 [1]
Product liability accrual    441 [1]
Contingent liabilities - Note 11       [1]
Stockholders' Equity    
Additional paid-in capital    10,454 [1]
Retained earnings    168,981 [1]
Less: Treasury stock - at cost 2012 - 4,299,434 shares 2011 - 4,299,434 shares    (37,884) [1]
Accumulated other comprehensive loss    (27,543) [1]
Total Stockholders' Equity 137,391 137,391 [1]
Total Liabilities and Stockholders' Equity    206,510 [1]
Nonvoting Common Stock
    
Stockholders' Equity    
Common Stock, Value       [1]
Voting Common Stock
    
Stockholders' Equity    
Common Stock, Value    $ 23,383 [1]
[1] Note: The balance sheet at December 31, 2011 has been derived from the audited financial statements at that date but does not include all the information and footnotes required by accounting principles generally accepted in the United States of America for complete financial statements.