XML 106 R95.htm IDEA: XBRL DOCUMENT
v3.24.2.u1

DERIVATIVE FINANCIAL INSTRUMENTS - Schedule of Interest Rate Swaps Recorded in Noninterest Expense (Details) - Interest Rate Swap - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
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 | 694 | 3,306 | 6,174 | (4,361)
Gain (loss), pay fixed, receive floating | $ (694) | $ (3,306) | $ (6,174) | $ 4,361

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 -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A + 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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480237/815-40-50-5 + 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: |