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Note 13 - Junior Subordinated Debentures - Junior Subordinated Debentures (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Junior subordinated debentures | $ 37,993 | $ 37,838
Junior subordinated debentures | (2,217) | (2,372)
Note Payable to QCR Holdings Capital Trust II [Member] |  |
Junior subordinated debentures | 10,310 | 10,310
Note Payable to Trust III [Member] |  |
Junior subordinated debentures | 8,248 | 8,248
Note Payable to Trust V [Member] |  |
Junior subordinated debentures | 10,310 | 10,310
Community National Trust II [Member] |  |
Junior subordinated debentures | 3,093 | 3,093
Community National Trust III [Member] |  |
Junior subordinated debentures | 3,609 | 3,609
Note Payable to Guaranty Bankshares Statutory Trust I [Member] |  |
Junior subordinated debentures | $ 4,640 | $ 4,640

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- Definition Amount, after accumulated amortization, of debt discount. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28541-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
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- Definition Including the current and noncurrent portions, the carrying value of junior subordinated long-term debt owed to unconsolidated subsidiary trusts as of the balance sheet date. Such debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets and was initially scheduled to be repaid after one year or beyond the normal operating cycle if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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