Note 18 - Fair Value of Financial Instruments (Details) - Assets and Liabilities Carried at Fair Value on a Non-Recurring Basis, and the Method Used to Determine Their Fair Value (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2012	Dec. 31, 2013
Assets:
Assets	$ 28,500	$ 26,954
Fair Value, Inputs, Level 3 [Member] | Loans Held For Sale [Member]
Assets:
Assets			425
Fair Value, Inputs, Level 3 [Member] | Impaired Loans [Member]
Assets:
Assets	22,174		23,544
Fair Value, Inputs, Level 3 [Member] | Other Real Estate Owned [Member]
Assets:
Assets	6,326		2,985
Fair Value, Inputs, Level 3 [Member]
Assets:
Assets	28,500		26,954
Loans Held For Sale [Member]
Assets:
Assets		425
Impaired Loans [Member]
Assets:
Assets	22,174	23,544
Other Real Estate Owned [Member]
Assets:
Assets	$ 6,326	$ 2,985