Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans and Associated Reserves (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013		Dec. 31, 2012		Jun. 30, 2012
Financing Receivable, Impaired [Line Items]
Principal Balance	$ 17,395		$ 18,456		$ 13,917
(A) Total Recorded Investment(1)	17,395	[1]	18,422	[1]
Recorded Investment(1)in (A) for Which There is No Related Allowance	15,947		16,940
Recorded Investment(1)in (A) for Which There is a Related Allowance	1,448		1,482
Related Allowance	273		554		362
Real Estate Construction [Member] | Construction residential [Member]
Financing Receivable, Impaired [Line Items]
Principal Balance	123		123
(A) Total Recorded Investment(1)	118	[1]	118	[1]
Recorded Investment(1)in (A) for Which There is No Related Allowance	118		118
Recorded Investment(1)in (A) for Which There is a Related Allowance	0		0
Related Allowance	0		0
Real Estate Construction [Member] | Construction other [Member]
Financing Receivable, Impaired [Line Items]
Principal Balance	2,869		6,520
(A) Total Recorded Investment(1)	2,854	[1]	6,487	[1]
Recorded Investment(1)in (A) for Which There is No Related Allowance	2,854		6,487
Recorded Investment(1)in (A) for Which There is a Related Allowance	0		0
Related Allowance	0		0
Consumer Real Estate [Member] | Equity Lines [Member]
Financing Receivable, Impaired [Line Items]
Principal Balance	0		0
(A) Total Recorded Investment(1)	0	[1]	0	[1]
Recorded Investment(1)in (A) for Which There is No Related Allowance	0		0
Recorded Investment(1)in (A) for Which There is a Related Allowance	0		0
Related Allowance	0		0
Consumer Real Estate [Member] | Residential closed end first liens [Member]
Financing Receivable, Impaired [Line Items]
Principal Balance	506		783
(A) Total Recorded Investment(1)	507	[1]	785	[1]
Recorded Investment(1)in (A) for Which There is No Related Allowance	291		634
Recorded Investment(1)in (A) for Which There is a Related Allowance	216		151
Related Allowance	3		43
Consumer Real Estate [Member] | Residential closed end junior liens [Member]
Financing Receivable, Impaired [Line Items]
Principal Balance	327		81
(A) Total Recorded Investment(1)	328	[1]	81	[1]
Recorded Investment(1)in (A) for Which There is No Related Allowance	61		81
Recorded Investment(1)in (A) for Which There is a Related Allowance	268		0
Related Allowance	7		0
Consumer Real Estate [Member] | Investor-owned residential real estate [Member]
Financing Receivable, Impaired [Line Items]
Principal Balance	82
(A) Total Recorded Investment(1)	83	[1]
Recorded Investment(1)in (A) for Which There is No Related Allowance	83
Recorded Investment(1)in (A) for Which There is a Related Allowance	0
Related Allowance	0
Commercial Real Estate Loans [Member] | Multifamily real estate [Member]
Financing Receivable, Impaired [Line Items]
Principal Balance	4,261		5,284
(A) Total Recorded Investment(1)	4,258	[1]	5,288	[1]
Recorded Investment(1)in (A) for Which There is No Related Allowance	4,258		5,288
Recorded Investment(1)in (A) for Which There is a Related Allowance	0		0
Related Allowance	0		0
Commercial Real Estate Loans [Member] | Commercial real estate, owner occupied [Member]
Financing Receivable, Impaired [Line Items]
Principal Balance	5,466		5,045
(A) Total Recorded Investment(1)	5,469	[1]	5,043	[1]
Recorded Investment(1)in (A) for Which There is No Related Allowance	4,553		4,293
Recorded Investment(1)in (A) for Which There is a Related Allowance	916		750
Related Allowance	261		273
Commercial Real Estate Loans [Member] | Commercial real estate, other [Member]
Financing Receivable, Impaired [Line Items]
Principal Balance	3,500		0
(A) Total Recorded Investment(1)	3,516	[1]	0	[1]
Recorded Investment(1)in (A) for Which There is No Related Allowance	3,516		0
Recorded Investment(1)in (A) for Which There is a Related Allowance	0		0
Related Allowance	0		0
Commercial Non Real Estate [Member] | Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Principal Balance	236		574
(A) Total Recorded Investment(1)	237	[1]	574	[1]
Recorded Investment(1)in (A) for Which There is No Related Allowance	213		39
Recorded Investment(1)in (A) for Which There is a Related Allowance	23		535
Related Allowance	1		231
Public Sector and IDA [Member] | Public Sector and IDA [Member]
Financing Receivable, Impaired [Line Items]
Principal Balance	0		0
(A) Total Recorded Investment(1)	0	[1]	0	[1]
Recorded Investment(1)in (A) for Which There is No Related Allowance	0		0
Recorded Investment(1)in (A) for Which There is a Related Allowance	0		0
Related Allowance	0		0
Consumer Non Real Estate [Member] | Credit Card Receivable [Member]
Financing Receivable, Impaired [Line Items]
Principal Balance	0		0
(A) Total Recorded Investment(1)	0	[1]	0	[1]
Recorded Investment(1)in (A) for Which There is No Related Allowance	0		0
Recorded Investment(1)in (A) for Which There is a Related Allowance	0		0
Related Allowance	0		0
Consumer Non Real Estate [Member] | Automobile [Member]
Financing Receivable, Impaired [Line Items]
Principal Balance	25		46
(A) Total Recorded Investment(1)	25	[1]	46	[1]
Recorded Investment(1)in (A) for Which There is No Related Allowance	0		0
Recorded Investment(1)in (A) for Which There is a Related Allowance	25		46
Related Allowance	1		7
Consumer Non Real Estate [Member] | Other Consumer Loans [Member]
Financing Receivable, Impaired [Line Items]
Principal Balance	0		0
(A) Total Recorded Investment(1)	0	[1]	0	[1]
Recorded Investment(1)in (A) for Which There is No Related Allowance	0		0
Recorded Investment(1)in (A) for Which There is a Related Allowance	0		0
Related Allowance	$ 0		$ 0

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