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Note F - Treasury Stock (Details) (USD $)
3 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Disclosure Text Block Supplement [Abstract]    
Treasury Stock, Shares 4,050,981us-gaap_TreasuryStockShares 4,050,981us-gaap_TreasuryStockShares
Treasury Stock, Value (in Dollars) $ 82,501,000us-gaap_TreasuryStockValue $ 82,501,000us-gaap_TreasuryStockValue
Treasury Stock, Shares, Acquired 0us-gaap_TreasuryStockSharesAcquired