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Note 13 - Junior Subordinated Debentures (Details) | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Oct. 01, 2017 USD ($) loan | May 13, 2013 USD ($) loan | Feb. 29, 2004 USD ($)
Debt Instrument, Face Amount | $ 40,210,000 | $ 40,210,000 |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 2.43% | 2.48% |  |  |
Junior Subordinated Debt [Member] |  |  |  |  |
Repayment period (in years) | 30 years |  |  |  |
Note Payable to QCR Holdings Capital Trust II [Member] |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  | $ 12,372,000
Community National |  |  |  |  |
Number of assumed junior subordinated debentures | loan |  |  |  | 2 |
Other borrowings |  |  |  | $ 4,200,000 |
Guaranty Bank and Trust Company |  |  |  |  |
Number of assumed junior subordinated debentures | loan |  |  | 1 |  |
Other borrowings |  |  | $ 3,900,000 |  |

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