Note 4 - Loans/Leases Receivable (Details) - Delinquency Status (USD $)	Dec. 31, 2014		Dec. 31, 2013
Finance Leases Portfolio Segment [Member] | Performing Financing Receivable [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent loan status	$ 164,693,144	[1]	$ 128,006,984	[1]
Finance Leases Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent loan status	1,339,272	[1]	894,458	[1]
Finance Leases Portfolio Segment [Member] | Delinquent Loans [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent loan status	166,032,416	[1]	128,901,442	[1]
Residential Portfolio Segment [Member] | Performing Financing Receivable [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent loan status	156,818,091	[1]	145,345,719	[1]
Residential Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent loan status	1,814,401	[1]	2,010,604	[1]
Residential Portfolio Segment [Member] | Delinquent Loans [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent loan status	158,632,492	[1]	147,356,323	[1]
Consumer Portfolio Segment [Member] | Performing Financing Receivable [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent loan status	71,491,531	[1]	74,688,039	[1]
Consumer Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent loan status	1,114,949	[1]	1,345,771	[1]
Consumer Portfolio Segment [Member] | Delinquent Loans [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent loan status	72,606,480	[1]	76,033,810	[1]
Performing Financing Receivable [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent loan status	393,002,766	[1]	348,040,742	[1]
Nonperforming Financing Receivable [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent loan status	4,268,622	[1]	4,250,833	[1]
Delinquent Loans [Member]
Note 4 - Loans/Leases Receivable (Details) - Delinquency Status [Line Items]
Delinquent loan status	$ 397,271,388	[1]	$ 352,291,575	[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.