Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized, Prior Year (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended				12 Months Ended
	Sep. 30, 2013		Sep. 30, 2013		Sep. 30, 2012		Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	$ 17,737	[1]	$ 17,357	[1],[2]	$ 13,831	[2]	$ 13,540	[2],[3]
Interest Income Recognized	57		159		292		9
Real Estate Construction [Member] | Construction residential [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	118	[1]	118	[1]			1,171	[3]
Real Estate Construction [Member] | Construction other [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	3,005	[1]	3,005	[1]			4,290	[3]
Interest Income Recognized							1
Consumer Real Estate [Member] | Equity Lines [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment		[1]		[1]			101	[3]
Consumer Real Estate [Member] | Residential closed end first liens [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	863	[1]	729	[1]			873	[3]
Interest Income Recognized	2		4				2
Consumer Real Estate [Member] | Residential closed end junior liens [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	410	[1]	238	[1]			234	[3]
Interest Income Recognized	2		2
Commercial Real Estate Loans [Member] | Multifamily real estate [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	4,133	[1]	4,189	[1]			1,466	[3]
Interest Income Recognized							5
Commercial Real Estate Loans [Member] | Commercial real estate, owner occupied [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	5,424	[1]	5,073	[1]			4,806	[3]
Interest Income Recognized	28		82				1
Commercial Real Estate Loans [Member] | Commercial real estate, other [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	3,489	[1]	3,492	[1]				[3]
Interest Income Recognized	22		65
Commercial Non Real Estate [Member] | Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	138	[1]	380	[1]			570	[3]
Interest Income Recognized	1		2
Public Sector and IDA [Member] | Public Sector and IDA [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment		[1]		[1]				[3]
Consumer Non Real Estate [Member] | Credit Card Receivable [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment		[1]		[1]				[3]
Consumer Non Real Estate [Member] | Automobile [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	26	[1]	33	[1]			4	[3]
Consumer Non Real Estate [Member] | Other Consumer Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment		[1]		[1]			$ 25	[3]

[1] Recorded investment includes the unpaid principal balance and any accrued interest and net deferred fees.

[2] Recorded investment includes principal, accrued interest and net deferred fees.

[3] Recorded investment includes the unpaid principal balance and any accrued interest and deferred fees.