LOANS AND ALLOWANCE FOR CREDIT LOSSES - Classes of loans by aging (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	$ 4,761,378	$ 4,761,848
One- to four-family residential construction
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	28,789	30,533
Subdivision construction
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	25,289	19,861
Land development
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	39,134	42,504
Commercial construction
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	381,618	352,793
Owner occupied one- to four-family residential
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	696,285	710,446
Non-owner occupied one- to four-family residential
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	126,808	122,901
Commercial real estate
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	1,489,309	1,543,742
Other residential (multi-family)
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	1,592,470	1,549,249
Commercial business
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	217,100	220,291
Consumer auto
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	25,124	25,787
Consumer other
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	25,119	27,905
Home equity lines of credit
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	114,333	115,836
30-59 Days Past Due
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	2,365	2,605
30-59 Days Past Due | One- to four-family residential construction
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	6	12
30-59 Days Past Due | Owner occupied one- to four-family residential
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	2,038	1,704
30-59 Days Past Due | Non-owner occupied one- to four-family residential
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable		642
30-59 Days Past Due | Commercial real estate
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	70
30-59 Days Past Due | Commercial business
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	55
30-59 Days Past Due | Consumer auto
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	10	39
30-59 Days Past Due | Consumer other
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	78	145
30-59 Days Past Due | Home equity lines of credit
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	108	63
60-89 Days Past Due
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	253	877
60-89 Days Past Due | Owner occupied one- to four-family residential
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	103	816
60-89 Days Past Due | Commercial business
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	35
60-89 Days Past Due | Consumer auto
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	11	1
60-89 Days Past Due | Consumer other
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	6	4
60-89 Days Past Due | Home equity lines of credit
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	98	56
Over 90 Days Past Due
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	3,482	3,573
Over 90 Days Past Due | Land development
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	368	464
Over 90 Days Past Due | Owner occupied one- to four-family residential
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	1,418	950
Over 90 Days Past Due | Non-owner occupied one- to four-family residential
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	1,658	1,681
Over 90 Days Past Due | Commercial real estate
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable		77
Over 90 Days Past Due | Commercial business
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable		384
Over 90 Days Past Due | Consumer other
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	14	17
Over 90 Days Past Due | Home equity lines of credit
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	24
Total Past Due
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	6,100	7,055
Total Past Due | One- to four-family residential construction
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	6	12
Total Past Due | Land development
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	368	464
Total Past Due | Owner occupied one- to four-family residential
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	3,559	3,470
Total Past Due | Non-owner occupied one- to four-family residential
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	1,658	2,323
Total Past Due | Commercial real estate
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	70	77
Total Past Due | Commercial business
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	90	384
Total Past Due | Consumer auto
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	21	40
Total Past Due | Consumer other
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	98	166
Total Past Due | Home equity lines of credit
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	230	119
Current
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	4,755,278	4,754,793
Current | One- to four-family residential construction
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	28,783	30,521
Current | Subdivision construction
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	25,289	19,861
Current | Land development
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	38,766	42,040
Current | Commercial construction
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	381,618	352,793
Current | Owner occupied one- to four-family residential
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	692,726	706,976
Current | Non-owner occupied one- to four-family residential
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	125,150	120,578
Current | Commercial real estate
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	1,489,239	1,543,665
Current | Other residential (multi-family)
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	1,592,470	1,549,249
Current | Commercial business
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	217,010	219,907
Current | Consumer auto
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	25,103	25,747
Current | Consumer other
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	25,021	27,739
Current | Home equity lines of credit
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loans Receivable	$ 114,103	$ 115,717