Note 14 - Derivatives (Details) - Notional Amount, Effective Dates and Maturity Dates of the IR Contracts - Jun. 30, 2015 - USD ($) $ in Thousands	Total
Active Interest Rate Swap [Member]
Note 14 - Derivatives (Details) - Notional Amount, Effective Dates and Maturity Dates of the IR Contracts [Line Items]
Fixed rate	1.84%
Variable rate	0.278%
Notional amount	$ 75,000
Effective date	Aug. 01, 2014
Maturity	Aug. 03, 2015
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%
Notional amount	$ 75,000
Effective date	Aug. 03, 2015
Maturity	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	Aug. 01, 2017