Note 6 - Loans (Details) - Summary of Impaired Loans by Loan Class (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 25,975	$ 19,989
Unpaid Principal Balance	37,164	24,820
Related Allowance	0	0
Recorded Investment	8,368	22,152
Unpaid Principal Balance	8,505	23,378
Related Allowance	1,233	4,994
Subtotal:
Recorded Investment	34,343	42,141
Unpaid Principal Balance	45,669	48,198
Related Allowance	1,233	4,994
Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	5,381
Unpaid Principal Balance	9,294
Related Allowance	0
Recorded Investment	3,269	6,590
Unpaid Principal Balance	3,273	6,808
Related Allowance	290	2,988
Subtotal:
Recorded Investment	8,650	6,590
Unpaid Principal Balance	12,567	6,808
Related Allowance	290	2,988
Commercial Real Estate Other Receivable [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	11,121	15,736
Unpaid Principal Balance	15,649	18,184
Related Allowance	0	0
Recorded Investment	844	6,011
Unpaid Principal Balance	844	6,020
Related Allowance	9	814
Residential One To Four Family [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	9,163	3,714
Unpaid Principal Balance	11,905	6,091
Related Allowance	0	0
Recorded Investment	3,671	8,805
Unpaid Principal Balance	3,804	9,804
Related Allowance	642	963
Residential Real Estate and Home Equities [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	310	539
Unpaid Principal Balance	316	545
Related Allowance	0	0
Recorded Investment	584	746
Unpaid Principal Balance	584	746
Related Allowance	292	229
Commercial Real Estate Portfolio Segment [Member]
Subtotal:
Recorded Investment	11,965	21,747
Unpaid Principal Balance	16,493	24,204
Related Allowance	9	814
Residential Portfolio Segment [Member]
Subtotal:
Recorded Investment	13,728	13,804
Unpaid Principal Balance	16,609	17,186
Related Allowance	$ 934	$ 1,192