LOANS HELD FOR INVESTMENT, Age Analysis on Accruing Past-due Loans and Nonaccrual Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	$ 3,098,978	$ 3,055,054
Total Nonaccrual	7,797	22,102
Nonaccrual with no ACL	416	1,575
30-89 Days Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	5,585	7,928
90 Days or More Past Due and Still Accruing [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	2,666	1,921
Commercial Real Estate [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	1,085,309	1,119,063
Total Nonaccrual	961	19,543
Nonaccrual with no ACL	150	0
Commercial Real Estate [Member] | 30-89 Days Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	1,059	594
Commercial Real Estate [Member] | 90 Days or More Past Due and Still Accruing [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	72	96
Commercial [Member] | Specialized [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	379,068	388,955
Total Nonaccrual	190	105
Nonaccrual with no ACL	0	0
Commercial [Member] | Specialized [Member] | 30-89 Days Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	163	1,770
Commercial [Member] | Specialized [Member] | 90 Days or More Past Due and Still Accruing [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	0	240
Commercial [Member] | General [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	620,934	557,371
Total Nonaccrual	4,359	180
Nonaccrual with no ACL	0	0
Commercial [Member] | General [Member] | 30-89 Days Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	765	1,374
Commercial [Member] | General [Member] | 90 Days or More Past Due and Still Accruing [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	46	244
Consumer [Member] | 1-4 Family Residential [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	589,935	566,400
Total Nonaccrual	2,126	676
Nonaccrual with no ACL	125	0
Consumer [Member] | 1-4 Family Residential [Member] | 30-89 Days Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	2,371	1,966
Consumer [Member] | 1-4 Family Residential [Member] | 90 Days or More Past Due and Still Accruing [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	2,334	1,042
Consumer [Member] | Auto Loans [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	258,193	254,474
Total Nonaccrual	0	0
Nonaccrual with no ACL	0	0
Consumer [Member] | Auto Loans [Member] | 30-89 Days Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	645	1,004
Consumer [Member] | Auto Loans [Member] | 90 Days or More Past Due and Still Accruing [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	34	114
Consumer [Member] | Other Consumer [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	63,589	64,936
Total Nonaccrual	20	23
Nonaccrual with no ACL	0	0
Consumer [Member] | Other Consumer [Member] | 30-89 Days Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	582	1,125
Consumer [Member] | Other Consumer [Member] | 90 Days or More Past Due and Still Accruing [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	180	185
Construction [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	101,950	103,855
Total Nonaccrual	141	1,575
Nonaccrual with no ACL	141	1,575
Construction [Member] | 30-89 Days Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	0	95
Construction [Member] | 90 Days or More Past Due and Still Accruing [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	$ 0	$ 0