Note 4 - Loans/Leases Receivable (Details) - Delinquency Status (USD $)	Jun. 30, 2013		Dec. 31, 2012
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent Loan Status	$ 1,194,422,230		$ 988,223,491
Performing [Member] | Leases receivable [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent Loan Status	114,054,183	[1]	102,686,854	[1]
Performing [Member] | Residential Real Estate [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent Loan Status	141,520,822	[1]	114,364,316	[1]
Performing [Member] | Installment and Other Consumer [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent Loan Status	73,124,630	[1]	75,921,358	[1]
Performing [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent Loan Status	328,699,635	[1]	292,972,528	[1]
Nonperforming [Member] | Leases receivable [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent Loan Status	700,574	[1]	998,802	[1]
Nonperforming [Member] | Residential Real Estate [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent Loan Status	1,572,520	[1]	1,217,257	[1]
Nonperforming [Member] | Installment and Other Consumer [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent Loan Status	1,444,125	[1]	799,156	[1]
Nonperforming [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent Loan Status	3,717,219	[1]	3,015,215	[1]
Delinquent Loans [Member] | Leases receivable [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent Loan Status	114,754,757	[1]	103,685,656	[1]
Delinquent Loans [Member] | Residential Real Estate [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent Loan Status	143,093,342	[1]	115,581,573	[1]
Delinquent Loans [Member] | Installment and Other Consumer [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent Loan Status	74,568,755	[1]	76,720,514	[1]
Delinquent Loans [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent Loan Status	$ 332,416,854	[1]	$ 295,987,743	[1]

[1] Performing = loans/leases accruing and less than 90 days past due. Nonperforming = loans/leases on nonaccrual, accruing loans/leases that are greater than or equal to 90 days past due, and accruing troubled debt restructurings.