Note 4 - Loans and Allowance for Loan Losses (Details) - Net (Charge-Offs)/Recoveries, Excluding Loans Acquired, Segregated by Class of Loans (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Credit Cards [Member] | Consumer 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]
Finance Receivables, Net (charge offs)/recoveries	$ (598)	$ (535)	$ (1,653)	$ (1,747)
Student Loans [Member] | Consumer 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]
Finance Receivables, Net (charge offs)/recoveries	(9)	(8)	(38)	(38)
Other Consumer [Member] | Consumer 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]
Finance Receivables, Net (charge offs)/recoveries	(517)	(327)	(806)	(670)
Real Estate 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]
Finance Receivables, Net (charge offs)/recoveries	(155)	(96)	(974)	(859)
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]
Finance Receivables, Net (charge offs)/recoveries	30		(424)	(119)
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]
Finance Receivables, Net (charge offs)/recoveries	(31)	(100)	(389)	(189)
Other Consumer and 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]
Finance Receivables, Net (charge offs)/recoveries	(154)	4	(161)	(551)
Commercial [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]
Finance Receivables, Net (charge offs)/recoveries	(308)	(5)	(520)	(62)
Agricultural Loans [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]
Finance Receivables, Net (charge offs)/recoveries	5	25	(13)	(7)
Total Commercial Loans [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]
Finance Receivables, Net (charge offs)/recoveries	(303)	20	(533)	(69)
Consumer 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]
Finance Receivables, Net (charge offs)/recoveries	(1,124)	(870)	(2,497)	(2,455)
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]
Finance Receivables, Net (charge offs)/recoveries	$ (1,582)	$ (946)	$ (4,004)	$ (3,383)