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Loans and Allowance for Credit Losses - Schedule of Types of Collateral (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | $ 32,432,473 | $ 31,123,641
Real Estate |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 231,880 | 168,623
Blanket Lien |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 42,500 | 43,245
Investment Securities/Cash |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 1,898 | 4,408
Auto |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 4,780 | 5,085
Other |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 6,657 | 7,414
Commercial |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 9,698,241 | 9,508,904
Commercial | Real Estate |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 14,450 | 8,962
Commercial | Blanket Lien |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 37,285 | 42,754
Commercial | Investment Securities/Cash |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 652 | 2,690
Commercial | Auto |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 535 | 1,611
Commercial | Other |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 366 | 980
Commercial real estate |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 13,450,209 | 12,457,070
Commercial real estate | Real Estate |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 156,570 | 108,871
Commercial real estate | Blanket Lien |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 3,908 | 0
Commercial real estate | Investment Securities/Cash |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 1,246 | 1,718
Commercial real estate | Auto |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 0 | 0
Commercial real estate | Other |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 6,259 | 6,411
BBCC | Real Estate |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 2,267 | 1,939
BBCC | Blanket Lien |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 1,301 | 478
BBCC | Investment Securities/Cash |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 0 | 0
BBCC | Auto |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 36 | 12
BBCC | Other |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 0 | 0
Residential real estate |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 6,684,480 | 6,460,441
Residential real estate | Real Estate |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 39,388 | 34,660
Residential real estate | Blanket Lien |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 0 | 0
Residential real estate | Investment Securities/Cash |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 0 | 0
Residential real estate | Auto |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 0 | 0
Residential real estate | Other |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 0 | 0
Indirect |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 1,003,287 | 1,034,257
Indirect | Real Estate |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 0 | 0
Indirect | Blanket Lien |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 0 | 0
Indirect | Investment Securities/Cash |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 0 | 0
Indirect | Auto |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 3,956 | 3,230
Indirect | Other |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 0 | 0
Direct |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 565,950 | 629,186
Direct | Real Estate |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 4,973 | 2,991
Direct | Blanket Lien |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 6 | 13
Direct | Investment Securities/Cash |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 0 | 0
Direct | Auto |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 253 | 232
Direct | Other |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 32 | 23
Home equity |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 1,030,306 | 1,033,783
Home equity | Real Estate |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 14,232 | 11,200
Home equity | Blanket Lien |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 0 | 0
Home equity | Investment Securities/Cash |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 0 | 0
Home equity | Auto |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | 0 | 0
Home equity | Other |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans | $ 0 | $ 0

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