Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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This item represents the amount of cash contributions during the period made by the entity to the Employee Stock Ownership Plan (ESOP).

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Note 8 - Employee Benefits (Details Textual) - USD ($)	9 Months Ended
Note 8 - Employee Benefits (Details Textual) - USD ($)	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Employee Stock Ownership Plan (ESOP), Number of Allocated Shares (in shares)	350,000
Employee Stock Ownership Plan (ESOP), Weighted Average Purchase Price of Shares Purchased (in dollars per share)	$ 10
Employee Stock Ownership Plan (ESOP), Cash Contributions to ESOP	$ 0	$ 0
Employee Stock Ownership Plan (ESOP), Compensation Expense	$ 206,535	$ 233,135
Employee Stock Ownership Plan (ESOP), Number of Committed-to-be-Released Shares (in shares)	17,546	17,530
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	3 years
Share-based Payment Arrangement, Expense	$ 126,588	$ 78,226
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount	$ 269,359
Restricted Stock Units (RSUs) [Member] \| Share-based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	0.33%
Restricted Stock Units (RSUs) [Member] \| Share-based Payment Arrangement, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	0.33%
Restricted Stock Units (RSUs) [Member] \| Share-based Payment Arrangement, Tranche Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	0.33%
Restricted Stock Units, One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	18,040
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 11.03
Restricted Stock Units, Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	13,071
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 13.70
Restricted Stock Units, Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	11,700
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 15.10
Committed on September 30, 2020 [Member]
Employee Stock Ownership Plan (ESOP), Number of Committed-to-be-Released Shares (in shares)	1,921
Committed on September 30, 2019 [Member]
Employee Stock Ownership Plan (ESOP), Number of Committed-to-be-Released Shares (in shares)			1,926