XML 96 R77.htm IDEA: XBRL DOCUMENT
v3.25.2

LOANS - Impaired Loans with Interest Recognized (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Interest income : |  |  |
Interest income recognized on nonaccrual loans | $ 0 | $ 0 | $ 0
Financing receivable, individually evaluated for credit loss, interest income | $ 9,600,000 | $ 3,400,000 | $ 2,800,000

X
- Definition Financing Receivable, Individually Evaluated for Credit Loss, Interest Income + References No definition available. + Details
Name: | msbi_FinancingReceivableIndividuallyEvaluatedForCreditLossInterestIncome
Namespace Prefix: | msbi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of interest income on financing receivable on nonaccrual status. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 16 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-16 + Details
Name: | us-gaap_FinancingReceivableNonaccrualInterestIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LoanAndLeaseReceivablesImpairedAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration