Allowance for Credit Losses - Allowance (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Changes in the allowance for loan losses for loans held for investments
Balance, Beginning of Period	$ 84,856	$ 97,961	$ 91,537	$ 101,116
Provision for (reversal of) credit losses	10,166	(2,511)	10,956	(513)
Loans Charged Off	(1,700)	(500)	(9,880)	(6,024)
Recoveries on Charged Off Loans	540	218	1,249	589
Balance, End of Period	93,862	95,168	93,862	95,168
Commercial real estate \| Non-owner occupied
Changes in the allowance for loan losses for loans held for investments
Balance, Beginning of Period	24,446	27,837	24,265	29,310
Provision for (reversal of) credit losses	(271)	879	(90)	324
Loans Charged Off				(918)
Balance, End of Period	24,175	28,716	24,175	28,716
Commercial real estate \| Owner occupied
Changes in the allowance for loan losses for loans held for investments
Balance, Beginning of Period	31,025	34,154	34,035	33,112
Provision for (reversal of) credit losses	5,695	(3,579)	2,685	(2,555)
Recoveries on Charged Off Loans		1		19
Balance, End of Period	36,720	30,576	36,720	30,576
Commercial and industrial
Changes in the allowance for loan losses for loans held for investments
Balance, Beginning of Period	18,401	23,015	21,280	25,609
Provision for (reversal of) credit losses	2,129	69	6,317	1,379
Loans Charged Off	(1,602)	(432)	(9,264)	(4,607)
Recoveries on Charged Off Loans	488	100	1,083	371
Balance, End of Period	19,416	22,752	19,416	22,752
Construction and land development
Changes in the allowance for loan losses for loans held for investments
Balance, Beginning of Period	5,985	7,341	7,398	7,161
Provision for (reversal of) credit losses	2,187	(48)	911	401
Loans Charged Off		(5)	(137)	(274)
Recoveries on Charged Off Loans		68		68
Balance, End of Period	8,172	7,356	8,172	7,356
1-4 family residential
Changes in the allowance for loan losses for loans held for investments
Balance, Beginning of Period	4,464	5,057	4,136	5,327
Provision for (reversal of) credit losses	410	137	914	(153)
Loans Charged Off		(1)	(237)	(1)
Recoveries on Charged Off Loans	24	8	85	28
Balance, End of Period	4,898	5,201	4,898	5,201
Consumer
Changes in the allowance for loan losses for loans held for investments
Balance, Beginning of Period	450	538	397	547
Provision for (reversal of) credit losses	(1)	(79)	143	12
Loans Charged Off	(98)	(62)	(242)	(224)
Recoveries on Charged Off Loans	28	41	81	103
Balance, End of Period	379	438	379	438
Broker-dealer
Changes in the allowance for loan losses for loans held for investments
Balance, Beginning of Period	85	19	26	50
Provision for (reversal of) credit losses	17	110	76	79
Balance, End of Period	$ 102	$ 129	$ 102	$ 129

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Amount of increase in allowance for credit loss on financing receivable from recovery.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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Amount of credit loss expense (reversal of expense) for financing receivable.

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