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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 | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at Beginning of Period | $ 300,555 | $ 288,003 | $ 303,671 | $ 107,341
Allowance Established for Acquired PCD Loans | 0 | 10,558 | 0 | 89,089
Charge-offs | (22,750) | (11,440) | (55,261) | (20,200)
Recoveries | 3,062 | 3,845 | 9,052 | 8,073
Provision for Loan Losses | 23,115 | 11,288 | 46,520 | 117,951
Balance at End of Period | 303,982 | 302,254 | 303,982 | 302,254
Commercial |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at Beginning of Period | 127,403 | 102,819 | 120,612 | 27,232
Allowance Established for Acquired PCD Loans | 0 | 3,740 | 0 | 38,780
Charge-offs | (16,705) | (2,696) | (37,459) | (5,919)
Recoveries | 1,616 | 2,206 | 3,713 | 3,219
Provision for Loan Losses | 12,441 | 6,344 | 37,889 | 49,101
Balance at End of Period | 124,755 | 112,413 | 124,755 | 112,413
Commercial real estate |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at Beginning of Period | 136,897 | 141,802 | 138,244 | 64,004
Allowance Established for Acquired PCD Loans | 0 | 6,818 | 0 | 49,419
Charge-offs | (2,291) | (4,772) | (5,938) | (5,596)
Recoveries | 102 | 287 | 1,394 | 789
Provision for Loan Losses | 10,267 | (45) | 11,275 | 35,474
Balance at End of Period | 144,975 | 144,090 | 144,975 | 144,090
BBCC |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at Beginning of Period | 2,776 | 2,064 | 2,431 | 2,458
Allowance Established for Acquired PCD Loans | 0 | 0 | 0 | 0
Charge-offs | (1,049) | 0 | (1,171) | (48)
Recoveries | 70 | 108 | 174 | 256
Provision for Loan Losses | 912 | (4) | 1,275 | (498)
Balance at End of Period | 2,709 | 2,168 | 2,709 | 2,168
Residential real estate |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at Beginning of Period | 20,421 | 19,729 | 21,916 | 9,347
Allowance Established for Acquired PCD Loans | 0 | 0 | 0 | 136
Charge-offs | (15) | (20) | (256) | (344)
Recoveries | 28 | 66 | 153 | 636
Provision for Loan Losses | 346 | 1,481 | (1,033) | 11,481
Balance at End of Period | 20,780 | 21,256 | 20,780 | 21,256
Indirect |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at Beginning of Period | 1,407 | 1,641 | 1,532 | 1,743
Allowance Established for Acquired PCD Loans | 0 | 0 | 0 | 0
Charge-offs | (490) | (624) | (2,089) | (1,636)
Recoveries | 325 | 379 | 1,349 | 921
Provision for Loan Losses | 79 | 189 | 529 | 557
Balance at End of Period | 1,321 | 1,585 | 1,321 | 1,585
Direct |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at Beginning of Period | 4,755 | 14,412 | 12,116 | 528
Allowance Established for Acquired PCD Loans | 0 | 0 | 0 | 31
Charge-offs | (2,180) | (3,299) | (8,018) | (6,550)
Recoveries | 580 | 442 | 1,798 | 1,712
Provision for Loan Losses | 416 | 4,541 | (2,325) | 20,375
Balance at End of Period | 3,571 | 16,096 | 3,571 | 16,096
Home equity |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at Beginning of Period | 6,896 | 5,536 | 6,820 | 2,029
Allowance Established for Acquired PCD Loans | 0 | 0 | 0 | 723
Charge-offs | (20) | (29) | (330) | (107)
Recoveries | 341 | 357 | 471 | 540
Provision for Loan Losses | (1,346) | (1,218) | (1,090) | 1,461
Balance at End of Period | $ 5,871 | $ 4,646 | $ 5,871 | $ 4,646

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- Definition Financing Receivable, Credit Loss, Expense (Reversal), Excluding Held-to-Maturity Securities + References No definition available. + Details
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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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