Note 9 - Borrowings (Details Textual) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Advances from Federal Home Loan Banks, Total	$ 9,100,000	$ 12,100,000
Federal Funds Purchased	0	0
Bankers Bank Of Wisconsin [Member]
Line of Credit Facility, Maximum Borrowing Capacity	7,900,000
Midwest Independent Bank [Member]
Line of Credit Facility, Maximum Borrowing Capacity	5,000,000
Federal Home Loan Bank of Chicago [Member]
Line of Credit Facility, Remaining Borrowing Capacity	65,800,000
Advances from Federal Home Loan Banks, Total	$ 9,068,030	$ 12,087,152

Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822

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Amount of short term borrowing where a bank borrows, at the federal funds rate, from another bank.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.13(1))
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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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