Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized (USD $) In Thousands, unless otherwise specified	3 Months Ended				12 Months Ended
	Mar. 31, 2014		Mar. 31, 2013		Dec. 31, 2013
Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized [Line Items]
Average recorded investment	$ 13,075	[1],[2]	$ 17,935	[1]	$ 16,654	[1],[2]
Interest income recognized	99	[2]	10		267	[2]
Consumer Real Estate Loans [Member] | Residential closed end first liens [Member]
Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized [Line Items]
Average recorded investment	561	[1],[2]			364	[1],[2]
Interest income recognized	4	[2]			3	[2]
Consumer Real Estate Loans [Member] | Residential closed end junior liens [Member]
Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized [Line Items]
Average recorded investment	257	[1],[2]			280	[1],[2]
Interest income recognized	5	[2]			9	[2]
Consumer Real Estate Loans [Member] | Investor-owned residential real estate [Member]
Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized [Line Items]
Average recorded investment	79	[1],[2]			131	[1],[2]
Interest income recognized	1	[2]			6	[2]
Commercial Real Estate Loans [Member] | Multifamily real estate [Member]
Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized [Line Items]
Average recorded investment	3,386	[1],[2]			4,172	[1],[2]
Interest income recognized		[2]				[2]
Commercial Real Estate Loans [Member] | Commercial real estate, owner occupied [Member]
Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized [Line Items]
Average recorded investment	5,515	[1],[2]			5,265	[1],[2]
Interest income recognized	44	[2]			136	[2]
Commercial Real Estate Loans [Member] | Commercial real estate, other [Member]
Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized [Line Items]
Average recorded investment	3,150	[1],[2]			3,369	[1],[2]
Interest income recognized	44	[2]			110	[2]
Commercial Non Real Estate [Member] | Commercial and Industrial [Member]
Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized [Line Items]
Average recorded investment	101	[1],[2]			117	[1],[2]
Interest income recognized	1	[2]			3	[2]
Consumer Non Real Estate [Member] | Automobile [Member]
Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized [Line Items]
Average recorded investment	26	[1],[2]			31	[1],[2]
Interest income recognized		[2]				[2]
Real Estate Construction [Member] | Construction residential [Member]
Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized [Line Items]
Average recorded investment					40	[1],[2]
Interest income recognized						[2]
Real Estate Construction [Member] | Construction other [Member]
Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized [Line Items]
Average recorded investment					2,885	[1],[2]
Interest income recognized						[2]

[1] Recorded investment includes principal net of unearned interest and deferred fees and costs, and accrued interest.

[2] Only classes with impaired loans are shown.