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Loans - Summary of Performing and Non Performing Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	$ 112,317	$ 77,569
Loans, before unearned loan fees	11,028,492	10,884,118
Non-Covered Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	11,028,492	10,884,118
Loans, before unearned loan fees	11,032,537	10,888,345
Non-Covered Loans | Commercial - investor owned
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	2,448,674	2,452,402
Loans, before unearned loan fees	2,448,674	2,452,402
Non-Covered Loans | Commercial - investor owned | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	17,707	17,885
Non-Covered Loans | Commercial - investor owned | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	0	0
Non-Covered Loans | Commercial - investor owned | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	17,707	17,885
Non-Covered Loans | CRE - owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	2,349,292	2,344,117
Loans, before unearned loan fees	2,349,292	2,344,117
Non-Covered Loans | CRE - owner occupied | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	28,117	28,373
Non-Covered Loans | CRE - owner occupied | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	0	0
Non-Covered Loans | CRE - owner occupied | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	28,117	28,373
Non-Covered Loans | Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	820,249	760,122
Loans, before unearned loan fees	820,249	760,122
Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	112,251	77,452
Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	66	117
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	62,134	26,188
Loans, before unearned loan fees	4,704,176	4,646,371
Commercial and industrial | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	4,534,594	4,475,490
Commercial and industrial | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	86,748	89,066
Commercial and industrial | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	82,834	81,815
Commercial and industrial | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	62,094	26,076
Commercial and industrial | Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	40	112
Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	704	712
Loans, before unearned loan fees	366,514	371,476
Residential real estate | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	353,610	358,299
Residential real estate | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	3,496	2,812
Residential real estate | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	9,408	10,365
Residential real estate | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	704	712
Residential real estate | Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	0	0
Other
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	3,655	4,411
Loans, before unearned loan fees	266,090	270,964
Other | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	241,954	244,839
Other | Special Mention (7)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	24,130	26,117
Other | Classified (8-9)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	6	8
Other | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	3,629	4,406
Other | Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	$ 26	$ 5

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- Definition

Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable. Excludes net investment in lease.

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