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Note 4 - Premises and Equipment, Net (Details Textual) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Operating Leases, Future Minimum Payments Due, Total | $ 3.4 | $ 3.8 |
Operating Leases, Future Minimum Payments Due, Next Twelve Months | 0.6 | 0.6 |
Operating Leases, Future Minimum Payments, Due in Two and Three Years, Total | 1.2 | 1.1 |
Operating Leases, Future Minimum Payments, Due in Four and Five Years, Total | 0.5 | 0.9 |
Operating Leases, Future Minimum Payments, Due Thereafter | 1.1 | 1.2 |
Depreciation, Total | $ 5.2 | $ 3.9 | $ 3.6

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