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Note 2 - Notes Payable and Long-term Debt - Summary of Credit Agreement and Line of Credit Note (Details) - USD ($)
Sep. 30, 2015
Dec. 31, 2014
Promissory Note with BOKF [Member]    
Line of Credit Note dated September 18, 2015, in the maximum principal amount of $10,000,000 with features as more fully described above – interest due monthly at LIBOR plus 1.85%; matures September 18, 2020 $ 3,711,224
Promissory Note and Business Loan Agreement with BOKF [Member]    
Line of Credit Note dated September 18, 2015, in the maximum principal amount of $10,000,000 with features as more fully described above – interest due monthly at LIBOR plus 1.85%; matures September 18, 2020 $ 0
Credit Agreement with JPMorgan Chase Bank, N.A. [Member]    
Line of Credit Note dated September 18, 2015, in the maximum principal amount of $10,000,000 with features as more fully described above – interest due monthly at LIBOR plus 1.85%; matures September 18, 2020 $ 2,143,125
Line of Credit Note with JPMorgan Chase Bank, N.A.[Member]    
Line of Credit Note dated September 18, 2015, in the maximum principal amount of $10,000,000 with features as more fully described above – interest due monthly at LIBOR plus 1.85%; matures September 18, 2020 3,500,000
$ 3,711,224 5,643,125
Less current maturities 3,702,500
LONG-TERM DEBT, net of current maturities $ 3,711,224 $ 1,940,625