XML 153 R141.htm IDEA: XBRL DOCUMENT v3.24.0.1

DERIVATIVE FINANCIAL INSTRUMENTS - Interest Rate Swaps Recorded in Noninterest Expense (Details) - Interest Rate Swap - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Derivative Financial Instruments
Net change in fair value of interest rate swaps	$ 0	$ 0	$ 0
Non-interest expense
Derivative Financial Instruments
Gain (loss) pay, floating receive fixed	(11,525)	19,308	(12,587)
Gain (loss) pay fixed receive floating	$ 11,525	$ (19,308)	$ 12,587

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: