Note 16 - Purchase of Financial Assets (Details Textual) - USD ($) $ in Thousands			12 Months Ended	26 Months Ended
	Feb. 27, 2015	May 12, 2014	Dec. 31, 2015	Jun. 30, 2016
Loan Purchase Agreement Financial Asset for Which Transfer Is Accounted as a Purchase Total Commitment to Purchase	$ 6,400	$ 40,000	$ 50,000
Loan Purchase Agreement Financial Asset for Which Transfer is Accounted as a Purchase Par Value Purchased	6,400			$ 86,000
Loan Purchase Agreement Financial Asset for Which Transfer Is Accounted as a Purchase Interest Accrued	17
Loan Purchase Agreement Financial Asset for Which Transfer Is Accounted as a Purchase Net Discount Premium	91			36,900
Payments for Loans	$ 6,500			$ 49,100
Loan Purchase Agreement Transfer of Financial Assets Accounted for as a Purchase Maximum Monthly Loan Purchase		$ 4,000
Loan Purchase Agreement Financial Asset for Which Transfer Is Accounted as a Purchase Total Commitment to Purchase Increase in Period			$ 10,000