PARENT COMPANY CONDENSED FINANCIAL STATEMENTS - CONDENSED STATEMENTS OF CASH FLOWS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income (Loss)	$ 60,672	$ 71,109	$ 52,987
Adjustments to reconcile net income to net cash provided by operating activities:
Contribution of shares to ESOP	1,518	1,451	1,402
Restricted stock compensation	895	825	807
NET CASH FROM OPERATING ACTIVITIES	86,090	78,787	55,067
CASH FLOWS FROM INVESTING ACTIVITIES:
Securities available-for-sale acquired from dissolution of FFBRM	(30,460)	(345,201)	(589,802)
NET CASH FROM INVESTING ACTIVITIES	(22,098)	(433,689)	(312,156)
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of treasury stock	(11,514)	(27,701)	(42,471)
Dividends paid	(15,383)	(14,459)	(14,181)
NET CASH FROM FINANCING ACTIVITIES	(209,750)	(110,608)	287,646
NET (DECREASE) INCREASE IN CASH	(145,758)	(465,510)	30,557
Supplemental disclosures of cash flow information:
Income Taxes	11,350	13,525	15,025
Parent [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income (Loss)	60,672	71,109	52,987
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	307	297	191
Equity in undistributed earnings	(59,406)	21,868	45,060
Contribution of shares to ESOP	1,518	1,451	1,402
Restricted stock compensation	895	825	807
Increase (decrease) in other liabilities	(3,590)	33,050	435
(Increase) decrease in other assets	5,136	(34,602)	(1,518)
NET CASH FROM OPERATING ACTIVITIES	5,532	93,998	99,364
CASH FLOWS FROM INVESTING ACTIVITIES:
Securities available-for-sale acquired from dissolution of FFBRM	(1,407)
(Increase) decrease in premises and equipment	(13)	(4,990)	0
Cash received (disbursed) from acquisitions	0	0	(31,348)
NET CASH FROM INVESTING ACTIVITIES	(1,420)	(4,990)	(31,348)
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of treasury stock	(11,514)	(27,701)	(42,471)
Dividends paid	(15,383)	(14,459)	(14,181)
NET CASH FROM FINANCING ACTIVITIES	(26,897)	(42,160)	(56,652)
NET (DECREASE) INCREASE IN CASH	(22,785)	46,848	11,364
CASH, BEGINNING OF YEAR	60,692	13,844	2,480
CASH, END OF YEAR	37,907	60,692	13,844
Supplemental disclosures of cash flow information:
Interest	0	0	0
Income Taxes	$ 11,350	$ 13,525	$ 15,025