Note 6 - Loans (Details) - Information Regarding Number of Loans Where Contractual Terms have been Restructured (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Financing Receivable, Modifications [Line Items]
Number of Contracts	4	6	6	15
Pre-Modification Outstanding Recorded Investment	$ 9,183	$ 6,385	$ 9,333	$ 7,152
Post-Modification Outstanding Recorded Investment	9,183	6,428	9,337	7,264
Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	2		2
Pre-Modification Outstanding Recorded Investment	9,070		9,070
Post-Modification Outstanding Recorded Investment	9,070		9,070
Commercial Real Estate Other Receivable [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts		2		2
Pre-Modification Outstanding Recorded Investment		6,002		6,002
Post-Modification Outstanding Recorded Investment		6,057		6,057
Residential One To Four Family [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	2	3	4	11
Pre-Modification Outstanding Recorded Investment	113	292	263	985
Post-Modification Outstanding Recorded Investment	113	280	267	1,041
Residential Real Estate and Home Equities [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts		1		2
Pre-Modification Outstanding Recorded Investment		91		165
Post-Modification Outstanding Recorded Investment		$ 91		$ 166