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Note K - Notes Payable and Long-term Debt (Details) (Equipment [Member], USD $)
In Millions, unless otherwise specified
9 Months Ended
Sep. 30, 2013
Note K - Notes Payable and Long-term Debt (Details) [Line Items]  
Notes Payable to Bank, Noncurrent (in Dollars) $ 30.8
Debt Instrument, Frequency of Periodic Payment monthly
Long-term Debt, Weighted Average Interest Rate 2.95%
Minimum [Member]
 
Note K - Notes Payable and Long-term Debt (Details) [Line Items]  
Debt Instrument, Term 36 months
Maximum [Member]
 
Note K - Notes Payable and Long-term Debt (Details) [Line Items]  
Debt Instrument, Term 60 months