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		6 Months Ended				12 Months Ended
	Jun. 30, 2013		Jun. 30, 2013		Jun. 30, 2012		Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	$ 17,567	[1]	$ 17,889	[1],[2]	$ 14,055	[2]	$ 13,540	[2],[3]
Interest Income Recognized	39		77		186		9
Real Estate Construction [Member] | Construction residential [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	118	[1]	118	[1]			1,171	[3]
Interest Income Recognized	0		0				0
Real Estate Construction [Member] | Construction other [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	2,854	[1]	2,927	[1]			4,290	[3]
Interest Income Recognized	0		0				1
Consumer Real Estate [Member] | Equity Lines [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	0	[1]	0	[1]			101	[3]
Interest Income Recognized	0		0				0
Consumer Real Estate [Member] | Residential closed end first liens [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	530	[1]	534	[1]			873	[3]
Interest Income Recognized	1		2				2
Consumer Real Estate [Member] | Residential closed end junior liens [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	347	[1]	352	[1]			234	[3]
Interest Income Recognized	0		0				0
Commercial Real Estate Loans [Member] | Multifamily real estate [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	4,294	[1]	4,383	[1]			1,466	[3]
Interest Income Recognized	0		0				5
Commercial Real Estate Loans [Member] | Commercial real estate, owner occupied [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	5,486	[1]	5,509	[1]			4,806	[3]
Interest Income Recognized	28		55				1
Commercial Real Estate Loans [Member] | Commercial real estate, other [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	3,516	[1]	3,516	[1]			0	[3]
Interest Income Recognized	8		16				0
Commercial Non Real Estate [Member] | Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	310	[1]	429	[1]			570	[3]
Interest Income Recognized	1		1				0
Public Sector and IDA [Member] | Public Sector and IDA [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	0	[1]	0	[1]			0	[3]
Interest Income Recognized	0		0				0
Consumer Non Real Estate [Member] | Credit Card Receivable [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	0	[1]	0	[1]			0	[3]
Interest Income Recognized	0		0				0
Consumer Non Real Estate [Member] | Automobile [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	29	[1]	37	[1]			4	[3]
Interest Income Recognized	0		0				0
Consumer Non Real Estate [Member] | Other Consumer Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	0	[1]	0	[1]			25	[3]
Interest Income Recognized	$ 0		$ 0				$ 0

[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.