v3.21.1

Long-Term Debt - Junior Subordinated Notes (Details) - Junior subordinated notes - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Mar. 31, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Debt Instrument [Line Items] |  |  |
Debt instrument, face amount | $ 44,847 |  | $ 44,847
Debt instrument, book value | $ 41,807 |  | 41,763
Stated maturity date | 5 years |  |
ATBancorp Statutory Trust I |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, face amount | $ 7,732 |  | 7,732
Debt instrument, book value | $ 6,859 |  | $ 6,850
Interest rate | 1.86% |  | 1.90%
ATBancorp Statutory Trust I | LIBOR |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate | 1.68% | 1.68% |
ATBancorp Statutory Trust II |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, face amount | $ 12,372 |  | $ 12,372
Debt instrument, book value | $ 10,864 |  | $ 10,850
Interest rate | 1.83% |  | 1.87%
ATBancorp Statutory Trust II | LIBOR |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate | 1.65% | 1.65% |
Barron Investment Capital Trust I |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, face amount | $ 2,062 |  | $ 2,062
Debt instrument, book value | $ 1,775 |  | $ 1,767
Interest rate | 2.35% |  | 2.39%
Barron Investment Capital Trust I | LIBOR |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate | 2.15% | 2.15% |
Central Bancshares Capital Trust II |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, face amount | $ 7,217 |  | $ 7,217
Debt instrument, book value | $ 6,845 |  | $ 6,832
Interest rate | 3.68% |  | 3.72%
Central Bancshares Capital Trust II | LIBOR |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate | 3.50% | 3.50% |
MidWestOne Statutory Trust II |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, face amount | $ 15,464 |  | $ 15,464
Debt instrument, book value | $ 15,464 |  | $ 15,464
Interest rate | 1.77% |  | 1.81%
MidWestOne Statutory Trust II | LIBOR |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate | 1.59% | 1.59% |

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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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