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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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Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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Loans Held for Investment - Summary (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Loans
Loans	$ 7,930,619		$ 7,879,904
Allowance for loan losses	(95,298)	$ (91,185)	(91,352)	$ (115,269)	$ (144,499)	$ (149,044)
Loans held for investment, net	7,835,321		7,788,552
Commercial real estate
Loans
Loans	3,262,628		3,042,729
Allowance for loan losses	(63,719)	(60,361)	(59,354)	(77,633)	(104,126)	(109,629)
Commercial and industrial
Loans
Loans	1,786,116		1,875,420
Allowance for loan losses	(19,836)	(20,130)	(21,982)	(27,866)	(28,513)	(27,703)
Commercial and industrial \| Loans Funded Through Paycheck Protection Program
Loans
Loans	7,000		77,700
Construction and Land Development
Loans
Loans	922,047		892,783
Allowance for loan losses	(4,996)	(5,515)	(4,674)	(5,185)	(7,249)	(6,677)
1 - 4 family residential
Loans
Loans	1,468,962		1,303,430
Allowance for loan losses	(5,554)	(4,340)	(4,589)	(3,659)	(3,388)	(3,946)
Consumer
Loans
Loans	27,862		32,349
Allowance for loan losses	(542)	(499)	(578)	(592)	(944)	(876)
Broker-dealer
Loans
Loans	463,004		733,193
Allowance for loan losses	$ (651)	$ (340)	$ (175)	$ (334)	$ (279)	$ (213)