Note 8 - Loans and Allowance for Loan Losses (Details) - Specific Reserve for Loans Modified as TDR's (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
TDRs with no specific allowance recorded	$ 22,907	$ 23,404
TDRs with an allowance recorded	5,093	5,609
TDRs with an allowance recorded	1,999	2,022
	28,000	29,013
	1,999	2,022
Unallocated Financing Receivables [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
TDRs with no specific allowance recorded	5,633	5,647
TDRs with an allowance recorded	2,832	2,914
TDRs with an allowance recorded	1,484	1,395
	8,465	8,561
	$ 1,484	$ 1,395