Allowance for Credit Losses - Schedule of Loan Portfolio, Excluding PCI Loans and Related Allowance (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Recorded Investment
Individually Evaluated	$ 81,516	$ 31,514
Collectively Evaluated	10,052,879	8,113,210
Total	10,134,395	8,144,724
Associated Allowance
Individually Evaluated	16,676	3,547
Collectively Evaluated	138,964	110,348
Total	155,640	113,895	$ 89,838	$ 83,315
Construction and land development
Recorded Investment
Individually Evaluated	6	59
Collectively Evaluated	757,829	587,273
Total	757,835	587,332
Associated Allowance
Individually Evaluated	0	0
Collectively Evaluated	6,540	6,464
Total	6,540	6,464	2,268	2,751
Commercial real estate - owner occupied
Recorded Investment
Individually Evaluated	4,843	3,346
Collectively Evaluated	1,647,648	1,474,956
Total	1,652,491	1,478,302
Associated Allowance
Individually Evaluated	126	41
Collectively Evaluated	6,166	6,010
Total	6,292	6,051	9,294	8,579
Commercial real estate - non-owner occupied
Recorded Investment
Individually Evaluated	23,072	4,183
Collectively Evaluated	3,388,979	2,585,591
Total	3,412,051	2,589,774
Associated Allowance
Individually Evaluated	386	230
Collectively Evaluated	53,189	43,028
Total	53,575	43,258	43,922	36,617
Residential real estate
Recorded Investment
Individually Evaluated	12,986	11,333
Collectively Evaluated	2,341,408	1,838,170
Total	2,354,394	1,849,503
Associated Allowance
Individually Evaluated	177	275
Collectively Evaluated	39,717	29,330
Total	39,894	29,605	14,075	12,811
Commercial and financial
Recorded Investment
Individually Evaluated	39,355	12,167
Collectively Evaluated	1,616,529	1,341,059
Total	1,655,884	1,353,226
Associated Allowance
Individually Evaluated	14,798	2,639
Collectively Evaluated	16,795	13,009
Total	31,593	15,648
Consumer
Recorded Investment
Individually Evaluated	1,254	426
Collectively Evaluated	300,486	286,161
Total	301,740	286,587
Associated Allowance
Individually Evaluated	1,189	362
Collectively Evaluated	16,557	12,507
Total	$ 17,746	$ 12,869	$ 2,552	$ 2,813

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Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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- Definition

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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-Topic 310
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Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

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-Topic 326
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The balance of financing receivables that were individually evaluated for impairment.

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