XML 75 R62.htm IDEA: XBRL DOCUMENT
v3.25.3

PORTFOLIO LOANS - Schedule of Past Due and Non-accrual Loans (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | $ 13,598,266 | $ 7,697,087
90+ days past due and still accruing | 1,418 | 1,149
Non-accrual Loans | 46,096 | 22,088
Non-accrual Loans with No Allowance for Credit Losses | 8,733 | 16,418
30 to 59 days past due and still accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | 7,366 | 4,552
60 to 89 days past due and still accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | 11,548 | 3,572
Commercial loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | 10,919,490 | 5,552,288
90+ days past due and still accruing | 1,286 | 0
Non-accrual Loans | 37,159 | 18,928
Non-accrual Loans with No Allowance for Credit Losses | 8,385 | 16,224
Commercial loans | 30 to 59 days past due and still accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | 3,811 | 178
Commercial loans | 60 to 89 days past due and still accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | 10,972 | 2,759
Commercial loans | C&I and other commercial |  |
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | 4,395,871 | 1,904,515
90+ days past due and still accruing | 861 | 0
Non-accrual Loans | 29,064 | 3,852
Non-accrual Loans with No Allowance for Credit Losses | 6,685 | 1,224
Commercial loans | C&I and other commercial | 30 to 59 days past due and still accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | 996 | 95
Commercial loans | C&I and other commercial | 60 to 89 days past due and still accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | 1,450 | 0
Commercial loans | CRE |  |
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | 5,424,095 | 3,269,564
90+ days past due and still accruing | 78 | 0
Non-accrual Loans | 7,800 | 15,053
Non-accrual Loans with No Allowance for Credit Losses | 1,543 | 15,000
Commercial loans | CRE | 30 to 59 days past due and still accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | 2,815 | 42
Commercial loans | CRE | 60 to 89 days past due and still accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | 6,289 | 2,759
Commercial loans | Real estate construction |  |
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | 1,099,524 | 378,209
90+ days past due and still accruing | 347 | 0
Non-accrual Loans | 295 | 23
Non-accrual Loans with No Allowance for Credit Losses | 157 | 0
Commercial loans | Real estate construction | 30 to 59 days past due and still accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | 0 | 41
Commercial loans | Real estate construction | 60 to 89 days past due and still accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | 3,233 | 0
Retail loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | 2,678,776 | 2,144,799
90+ days past due and still accruing | 132 | 1,149
Non-accrual Loans | 8,937 | 3,160
Non-accrual Loans with No Allowance for Credit Losses | 348 | 194
Retail loans | 30 to 59 days past due and still accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | 3,555 | 4,374
Retail loans | 60 to 89 days past due and still accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | 576 | 813
Retail loans | CRE |  |
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | 2,196,246 | 1,696,457
90+ days past due and still accruing | 102 | 1,115
Non-accrual Loans | 8,305 | 2,984
Non-accrual Loans with No Allowance for Credit Losses | 348 | 194
Retail loans | CRE | 30 to 59 days past due and still accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | 2,626 | 3,280
Retail loans | CRE | 60 to 89 days past due and still accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | 448 | 683
Retail loans | Retail other |  |
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | 482,530 | 448,342
90+ days past due and still accruing | 30 | 34
Non-accrual Loans | 632 | 176
Non-accrual Loans with No Allowance for Credit Losses | 0 | 0
Retail loans | Retail other | 30 to 59 days past due and still accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | 929 | 1,094
Retail loans | Retail other | 60 to 89 days past due and still accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Total portfolio loans | $ 128 | $ 130

X
- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, of financing receivable on nonaccrual status with no allowance for credit loss. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 16 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-16 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestNonaccrualNoAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable 90 days or more past due and still accruing. Excludes net investment in lease. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-7 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 80 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-80 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 16 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-16 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable on nonaccrual status. Excludes net investment in lease. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph a -Subparagraph (3) -Publisher SEC Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph a -Subparagraph (2) -Publisher SEC Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 16 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-16 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 8: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 9: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 10: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-14 Reference 12: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (e)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 13: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (e)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 14: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 15: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 16: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 17: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 80 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-80 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables30To59DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables60To89DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=buse_CommercialAndIndustrialAndOtherCommercialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_RealEstateLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConsumerOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |