Note 4 - Loans and Allowance for Loan Losses (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended		12 Months Ended	3 Months Ended					9 Months Ended		9 Months Ended			9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Jun. 30, 2014 Short-Term Interest Only-Payments [Member] Commercial and Industrial [Member]	Jun. 30, 2014 Extended at Interest Rate Lower Than Current Market Rate [Member] Commercial Real Estate Loans [Member]	Sep. 30, 2014 Extended at Interest Rate Lower Than Current Market Rate [Member] Commercial Real Estate Loans [Member]	Sep. 30, 2014 Troubled Debt Restructurings Performing According to Modified Terms [Member]	Dec. 31, 2013 Troubled Debt Restructurings Performing According to Modified Terms [Member]	Sep. 30, 2014 Troubled Debt Restructurings [Member]	Dec. 31, 2013 Troubled Debt Restructurings [Member]	Sep. 30, 2014 Commercial and Industrial [Member]	Sep. 30, 2014 Unsecured [Member]	Dec. 31, 2013 Unsecured [Member]	Sep. 30, 2014 Troubled Debt Restructurings [Member]	Sep. 30, 2013 Troubled Debt Restructurings [Member]	Dec. 31, 2013 Troubled Debt Restructurings [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items]
Allowance for Loan and Lease Losses, Write-offs	$ 0		$ 0
Allowance for Loan and Lease Losses, Period Increase (Decrease)	(687)		(321)											0	7
Provision for Loan and Lease Losses Increase (Decrease)			(871)
Increase (Decrease) in Other Loans									4,365
Change in Troubled Debt Restructurings	34.60%
Financing Receivable, Modifications, Number of Contracts				2	1						4
Financing Receivable, Modifications, Recorded Investment				3,621	767	395					4,065
Percentage of Loan Portfolio							98.00%	98.00%				5.67%	5.13%
Impaired Financing Receivable, Related Allowance	1,688		2,625						1,688	2,375				0	7
Loans and Leases Receivable, Impaired, Commitment to Lend														3,083		718
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	0
Minimum Loan Balance for Loans Evaluated by Risk Categories	$ 500