XML 95 R85.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Derivative Financial Instruments - Interest Rate Swaps Recorded in Noninterest Expense (Details) - Interest Rate Swap - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Derivative [Line Items] |  |  |  |
Net change in fair value of interest rate swaps | $ 0 | $ 0 | $ 0 | $ 0
Noninterest expense |  |  |  |
Derivative [Line Items] |  |  |  |
Gain (loss) pay, floating receive fixed | 18,317 | (2,024) | 21,792 | (11,355)
Gain (loss) pay fixed receive floating | $ (18,317) | $ 2,024 | $ (21,792) | $ 11,355

X
- Definition Amount of increase (decrease) in the fair value of derivatives pay fixed receive floating recognized in the income statement. + References No definition available. + Details
Name: | buse_DerivativeGainLossesOnDerivativePayFixedReceiveFloating
Namespace Prefix: | buse_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase (decrease) in the fair value of derivatives pay floating receive fixed recognized in the income statement. + References No definition available. + Details
Name: | buse_DerivativeGainLossesOnDerivativePayFloatingReceiveFixed
Namespace Prefix: | buse_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959 + Details
Name: | us-gaap_DerivativeGainLossOnDerivativeNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=buse_NoninterestExpensesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |