Note 19 - Commitments, Guarantees and Other Contingencies (Details) - Contractual Amounts of the Company’s Unused Lending Commitments $ in Thousands	Jun. 30, 2015 USD ($)
Commitments to extend credit:
Unused lending commitments	$ 223,024
Single-family Real Estate, Revolving, Open-end Loans [Member]
Commitments to extend credit:
Unused lending commitments	78,337
Single Family Residential Construction Loan [Member]
Commitments to extend credit:
Unused lending commitments	12,601
Commercial Real Estate, Other Construction Loans, and Land Development Loan Commitments [Member]
Commitments to extend credit:
Unused lending commitments	49,632
Commercial and Industrial Portfolio Segment[Member]
Commitments to extend credit:
Unused lending commitments	40,180
Overdraft Protection Line [Member]
Commitments to extend credit:
Unused lending commitments	31,335
Other Loans [Member]
Commitments to extend credit:
Unused lending commitments	$ 10,939