INVESTMENT SECURITIES - Schedule of Investment Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Sep. 01, 2022	Dec. 31, 2021
Securities Available for Sale:
Amortized Cost	$ 490,206		$ 946,511
Gross Unrealized Gains	173		3,562
Gross Unrealized Losses	(57,826)		(11,909)
Fair Value	432,553		938,164
Securities Held to Maturity:
Amortized Cost	465,858
Gross Unrealized Gains	32
Gross Unrealized Losses	(54,626)
Fair Value	411,264	$ 477,000
U.S. treasury securities
Securities Available for Sale:
Amortized Cost	1,644		88,638
Gross Unrealized Gains	0		0
Gross Unrealized Losses	(22)		(1,087)
Fair Value	1,622		87,551
Securities Held to Maturity:
Amortized Cost	91,615
Gross Unrealized Gains	0
Gross Unrealized Losses	(4,149)
Fair Value	87,466
U.S. agency
Securities Available for Sale:
Amortized Cost	5,035		17,916
Gross Unrealized Gains	0		5
Gross Unrealized Losses	(450)		(140)
Fair Value	4,585		17,781
Securities Held to Maturity:
Amortized Cost	16,409
Gross Unrealized Gains	0
Gross Unrealized Losses	(1,838)
Fair Value	14,571
Asset backed securities
Securities Available for Sale:
Amortized Cost	31,468
Gross Unrealized Gains	0
Gross Unrealized Losses	(1,480)
Fair Value	29,988
State, county and municipal securities
Securities Available for Sale:
Amortized Cost	126,119		252,632
Gross Unrealized Gains	0		877
Gross Unrealized Losses	(21,363)		(3,356)
Fair Value	104,756		250,153
Securities Held to Maturity:
Amortized Cost	136,138
Gross Unrealized Gains	32
Gross Unrealized Losses	(19,518)
Fair Value	116,652
Corporate debt securities
Securities Available for Sale:
Amortized Cost	54,741		48,153
Gross Unrealized Gains	164		520
Gross Unrealized Losses	(5,320)		(265)
Fair Value	49,585		48,408
Mortgage-backed securities
Securities Available for Sale:
Amortized Cost	271,199		539,172
Gross Unrealized Gains	9		2,160
Gross Unrealized Losses	(29,191)		(7,061)
Fair Value	242,017		$ 534,271
Securities Held to Maturity:
Amortized Cost	221,696
Gross Unrealized Gains	0
Gross Unrealized Losses	(29,121)
Fair Value	$ 192,575

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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