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Note 5 - Fair Value - Assets Measured At Fair Value on a Recurring and Nonrecurring Basis (Details) - USD ($) | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | ---
AFS | $ 259,644,940 | $ 272,907,907
US Government Agencies Debt Securities [Member] |  |
AFS | 36,867,510 | 38,096,534
Residential Mortgage Backed Securities [Member] |  |
AFS | 157,289,043 | 163,301,304
US States and Political Subdivisions Debt Securities [Member] |  |
AFS | 61,201,804 | 66,625,496
Other Securities [Member] |  |
AFS | 4,286,583 | 4,884,573
Fair Value, Measurements, Nonrecurring [Member] |  |
Assets Fair Value | 19,334,785 | 23,615,310
Impaired loans/leases | 5,564,760 | 8,972,337
OREO | 13,770,025 | 14,642,973
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Assets Fair Value |  |
Impaired loans/leases |  |
OREO |  |
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Assets Fair Value |  |
Impaired loans/leases |  |
OREO |  |
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Assets Fair Value | 19,334,785 | 23,615,310
Impaired loans/leases | 5,564,760 | 8,972,337
OREO | 13,770,025 | 14,642,973
Fair Value, Measurements, Recurring [Member] |  |
Assets Fair Value | 264,802,436 | 277,811,845
Liabilities Fair Value | 4,500,318 | 4,397,238
Fair Value, Measurements, Recurring [Member] | Interest Rate Cap [Member] |  |
Interest rate caps | 657,178 | 506,700
Fair Value, Measurements, Recurring [Member] | Interest Rate Swap [Member] |  |
Interest rate caps | 4,500,318 | 4,397,238
Derivative Liabilites | 4,500,318 | 4,397,238
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Assets Fair Value |  | 1,028
Liabilities Fair Value |  |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Interest Rate Cap [Member] |  |
Interest rate caps |  |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Interest Rate Swap [Member] |  |
Interest rate caps |  |
Derivative Liabilites |  |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Assets Fair Value | 264,802,436 | 277,810,817
Liabilities Fair Value | 4,500,318 | 4,397,238
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Cap [Member] |  |
Interest rate caps | 657,178 | 506,700
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member] |  |
Interest rate caps | 4,500,318 | 4,397,238
Derivative Liabilites | 4,500,318 | 4,397,238
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Assets Fair Value |  |
Liabilities Fair Value |  |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest Rate Cap [Member] |  |
Interest rate caps |  |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest Rate Swap [Member] |  |
Interest rate caps |  |
Derivative Liabilites |  |
Fair Value, Measurements, Recurring [Member] | US Government Agencies Debt Securities [Member] |  |
AFS | 36,867,510 | 38,096,534
Fair Value, Measurements, Recurring [Member] | US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
AFS |  |
Fair Value, Measurements, Recurring [Member] | US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
AFS | 36,867,510 | 38,096,534
Fair Value, Measurements, Recurring [Member] | US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
AFS |  |
Fair Value, Measurements, Recurring [Member] | Residential Mortgage Backed Securities [Member] |  |
AFS | 157,289,043 | 163,301,304
Fair Value, Measurements, Recurring [Member] | Residential Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
AFS |  |
Fair Value, Measurements, Recurring [Member] | Residential Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
AFS | 157,289,043 | 163,301,304
Fair Value, Measurements, Recurring [Member] | Residential Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
AFS |  |
Fair Value, Measurements, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] |  |
AFS | 61,201,804 | 66,625,496
Fair Value, Measurements, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
AFS |  |
Fair Value, Measurements, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
AFS | 61,201,804 | 66,625,496
Fair Value, Measurements, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
AFS |  |
Fair Value, Measurements, Recurring [Member] | Other Securities [Member] |  |
AFS | 4,286,583 | 4,884,573
Fair Value, Measurements, Recurring [Member] | Other Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
AFS |  | 1,028
Fair Value, Measurements, Recurring [Member] | Other Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
AFS | 4,286,583 | 4,883,545
Fair Value, Measurements, Recurring [Member] | Other Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
AFS |  |

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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13433-108611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 + Details
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