Note 3 - Loans Leases Receivable - Troubled Debt Restructurings (Details)	3 Months Ended
Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)
Number of Loans / Leases	11	5
Pre-Modification Recorded Investment	$ 809,813	$ 456,592
Post-Modification Recorded Investment	809,813	456,592
Specific Allowance
Extended Maturity [Member]
Number of Loans / Leases	1	4
Pre-Modification Recorded Investment	$ 6,263	$ 410,653
Post-Modification Recorded Investment	6,263	410,653
Specific Allowance
Payment Deferral [Member]
Number of Loans / Leases	10	1
Pre-Modification Recorded Investment	$ 803,550	$ 45,939
Post-Modification Recorded Investment	803,550	45,939
Specific Allowance
Finance Leases Portfolio Segment [Member] \| Extended Maturity [Member]
Number of Loans / Leases	1	4
Pre-Modification Recorded Investment	$ 6,263	$ 410,653
Post-Modification Recorded Investment	6,263	410,653
Specific Allowance
Finance Leases Portfolio Segment [Member] \| Payment Deferral [Member]
Number of Loans / Leases	8	1
Pre-Modification Recorded Investment	$ 669,861	$ 45,939
Post-Modification Recorded Investment	669,861	45,939
Specific Allowance
Commercial Portfolio Segment [Member] \| Extended Maturity [Member]
Number of Loans / Leases	2
Pre-Modification Recorded Investment	$ 133,689
Post-Modification Recorded Investment	133,689
Specific Allowance

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

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- Definition

Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

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