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Loans and Allowance for Credit Losses - Schedule of Activity in Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at Beginning of Period |  | $ 303,671 | $ 107,341 | $ 131,388
Charge-offs | $ (68,463) | (68,463) | (27,281) | (4,310)
Recoveries |  | 12,553 | 11,182 | 9,075
Provision (Release) for Loan Losses |  | 59,849 | 123,340 | (28,812)
Balance at End of Period | 307,610 | 307,610 | 303,671 | 107,341
Allowance Established for Acquired PCD Loans |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Allowance Established for Acquired PCD Loans |  | 0 | 89,089 | 0
Commercial |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at Beginning of Period |  | 120,612 | 27,232 | 30,567
Charge-offs |  | (41,451) | (6,885) | (1,228)
Recoveries |  | 4,172 | 4,610 | 791
Provision (Release) for Loan Losses |  | 35,000 | 56,875 | (2,898)
Balance at End of Period | 118,333 | 118,333 | 120,612 | 27,232
Commercial | Allowance Established for Acquired PCD Loans |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Allowance Established for Acquired PCD Loans |  | 0 | 38,780 | 0
Commercial real estate |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at Beginning of Period |  | 138,244 | 64,004 | 75,810
Charge-offs |  | (11,198) | (6,519) | (264)
Recoveries |  | 2,417 | 1,095 | 4,403
Provision (Release) for Loan Losses |  | 25,636 | 30,245 | (15,945)
Balance at End of Period | 155,099 | 155,099 | 138,244 | 64,004
Commercial real estate | Allowance Established for Acquired PCD Loans |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Allowance Established for Acquired PCD Loans |  | 0 | 49,419 | 0
BBCC |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at Beginning of Period |  | 2,431 | 2,458 | 6,120
Charge-offs |  | (1,650) | (85) | (144)
Recoveries |  | 275 | 281 | 105
Provision (Release) for Loan Losses |  | 1,831 | (223) | (3,623)
Balance at End of Period | 2,887 | 2,887 | 2,431 | 2,458
BBCC | Allowance Established for Acquired PCD Loans |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Allowance Established for Acquired PCD Loans |  | 0 | 0 | 0
Residential real estate |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at Beginning of Period |  | 21,916 | 9,347 | 12,608
Charge-offs | (256) | (256) | (344) | (346)
Recoveries |  | 1,268 | 760 | 339
Provision (Release) for Loan Losses |  | (2,091) | 12,017 | (3,254)
Balance at End of Period | 20,837 | 20,837 | 21,916 | 9,347
Residential real estate | Allowance Established for Acquired PCD Loans |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Allowance Established for Acquired PCD Loans |  | 0 | 136 | 0
Indirect |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at Beginning of Period |  | 1,532 | 1,743 | 3,580
Charge-offs | (2,948) | (2,948) | (2,525) | (1,087)
Recoveries |  | 1,559 | 1,263 | 1,682
Provision (Release) for Loan Losses |  | 1,093 | 1,051 | (2,432)
Balance at End of Period | 1,236 | 1,236 | 1,532 | 1,743
Indirect | Allowance Established for Acquired PCD Loans |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Allowance Established for Acquired PCD Loans |  | 0 | 0 | 0
Direct |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at Beginning of Period |  | 12,116 | 528 | 855
Charge-offs | (10,517) | (10,517) | (10,799) | (1,159)
Recoveries |  | 2,331 | 2,557 | 777
Provision (Release) for Loan Losses |  | (761) | 19,799 | 55
Balance at End of Period | 3,169 | 3,169 | 12,116 | 528
Direct | Allowance Established for Acquired PCD Loans |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Allowance Established for Acquired PCD Loans |  | 0 | 31 | 0
Home equity |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at Beginning of Period |  | 6,820 | 2,029 | 1,848
Charge-offs | (443) | (443) | (124) | (82)
Recoveries |  | 531 | 616 | 978
Provision (Release) for Loan Losses |  | (859) | 3,576 | (715)
Balance at End of Period | $ 6,049 | 6,049 | 6,820 | 2,029
Home equity | Allowance Established for Acquired PCD Loans |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Allowance Established for Acquired PCD Loans |  | $ 0 | $ 723 | $ 0

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- Definition Amount excluding accrued interest, of allowance for credit loss on 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 + Details
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