Note 4 - Loans and Allowance for Loan Losses (Details) - Net (Charge-Offs)/Recoveries, Excluding Loans Acquired, Segregated by Class of Loans - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Note 4 - Loans and Allowance for Loan Losses (Details) - Net (Charge-Offs)/Recoveries, Excluding Loans Acquired, Segregated by Class of Loans [Line Items]
Loans Receivable	$ (1,669)	$ (1,582)	$ (3,703)	$ (4,004)
Consumer Portfolio Segment [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Net (Charge-Offs)/Recoveries, Excluding Loans Acquired, Segregated by Class of Loans [Line Items]
Loans Receivable	(1,069)	(1,124)	(2,468)	(2,497)
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Net (Charge-Offs)/Recoveries, Excluding Loans Acquired, Segregated by Class of Loans [Line Items]
Loans Receivable	(550)	(598)	(1,683)	(1,653)
Consumer Portfolio Segment [Member] | Student Loan [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Net (Charge-Offs)/Recoveries, Excluding Loans Acquired, Segregated by Class of Loans [Line Items]
Loans Receivable	0	(9)	0	(38)
Consumer Portfolio Segment [Member] | Other Loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Net (Charge-Offs)/Recoveries, Excluding Loans Acquired, Segregated by Class of Loans [Line Items]
Loans Receivable	(519)	(517)	(785)	(806)
Commercial Real Estate Portfolio Segment [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Net (Charge-Offs)/Recoveries, Excluding Loans Acquired, Segregated by Class of Loans [Line Items]
Loans Receivable	(84)	(155)	(652)	(974)
Commercial Real Estate Portfolio Segment [Member] | Other Loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Net (Charge-Offs)/Recoveries, Excluding Loans Acquired, Segregated by Class of Loans [Line Items]
Loans Receivable	(26)	(154)	(240)	(161)
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Net (Charge-Offs)/Recoveries, Excluding Loans Acquired, Segregated by Class of Loans [Line Items]
Loans Receivable	(15)	30	(44)	(424)
Commercial Real Estate Portfolio Segment [Member] | Single Family Residential Loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Net (Charge-Offs)/Recoveries, Excluding Loans Acquired, Segregated by Class of Loans [Line Items]
Loans Receivable	(43)	(31)	(368)	(389)
Commercial Portfolio Segment [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Net (Charge-Offs)/Recoveries, Excluding Loans Acquired, Segregated by Class of Loans [Line Items]
Loans Receivable	(516)	(303)	(583)	(533)
Commercial Portfolio Segment [Member] | Commercial Loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Net (Charge-Offs)/Recoveries, Excluding Loans Acquired, Segregated by Class of Loans [Line Items]
Loans Receivable	(466)	(308)	(542)	(520)
Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Net (Charge-Offs)/Recoveries, Excluding Loans Acquired, Segregated by Class of Loans [Line Items]
Loans Receivable	$ (50)	$ 5	$ (41)	$ (13)