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Note 14 - Derivatives (Details) - Notional Amount, Effective Dates and Maturity Dates of the IR Contracts
$ in Thousands
12 Months Ended
Dec. 31, 2015
USD ($)
Forward Starting Interest Rate Swap One [Member]  
Note 14 - Derivatives (Details) - Notional Amount, Effective Dates and Maturity Dates of the IR Contracts [Line Items]  
Fixed rate 2.64%
Variable rate 0.33% [1]
Notional amount $ 75,000
Effective date Aug. 03, 2015
Maturity date Aug. 01, 2016
Forward Starting Interest Rate Swap Two [Member]  
Note 14 - Derivatives (Details) - Notional Amount, Effective Dates and Maturity Dates of the IR Contracts [Line Items]  
Fixed rate 3.22%
Notional amount $ 75,000
Effective date Aug. 01, 2016
Maturity date Aug. 01, 2017
[1] Rate floats to three month LIBOR payable quarterly on February 1, May 1, August 1, and November 1.