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Acquisition - Carrying Value of Acquired Loans (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Business Acquisition [Line Items] |  |
Book value of loans acquired | $ 911,552 | $ 1,184,133
Accretion recorded on acquired loans year to date | 2,352 | 5,574
Accretion recorded on acquired unfunded commitments year to date | 819 | 893
West Suburban acquired loans |  |
Business Acquisition [Line Items] |  |
Book value of loans acquired | 876,201 | 1,134,759
ABC Bank acquired loans |  |
Business Acquisition [Line Items] |  |
Book value of loans acquired | 23,158 | 33,681
Talmer Bank acquired loans |  |
Business Acquisition [Line Items] |  |
Book value of loans acquired | 12,193 | 15,693
PCD |  |
Business Acquisition [Line Items] |  |
Book value of loans acquired | 55,725 | 77,182
Accretion recorded on acquired loans year to date | 668 | 848
PCD | West Suburban acquired loans |  |
Business Acquisition [Line Items] |  |
Book value of loans acquired | 54,123 | 75,396
PCD | ABC Bank acquired loans |  |
Business Acquisition [Line Items] |  |
Book value of loans acquired | 1,602 | 1,786
Non-PCD |  |
Business Acquisition [Line Items] |  |
Book value of loans acquired | 855,827 | 1,106,951
Accretion recorded on acquired loans year to date | 1,684 | 4,726
Non-PCD | West Suburban acquired loans |  |
Business Acquisition [Line Items] |  |
Book value of loans acquired | 822,078 | 1,059,363
Non-PCD | ABC Bank acquired loans |  |
Business Acquisition [Line Items] |  |
Book value of loans acquired | 21,556 | 31,895
Non-PCD | Talmer Bank acquired loans |  |
Business Acquisition [Line Items] |  |
Book value of loans acquired | $ 12,193 | $ 15,693

X
- Definition Amount of increase (decrease) of the excess of a unfunded commitment's cash flows expected to be collected over the investor's initial investment in acquired unfunded commitments not accounted for as debt securities with evidence of deterioration of credit quality. + References No definition available. + Details
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X
- Definition The recorded balance of increase (decrease) (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References No definition available. + Details
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X
- Definition The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References No definition available. + Details
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- 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 805 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479907/805-20-50-5 + Details
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