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INVESTMENT SECURITIES (Investment Securities by Contractual Maturity - HTM) (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 332,713	$ 549,024
Gross Unrealized Gains	51	55
Gross Unrealized Losses	48,515	58,315
Fair Value	$ 284,249	$ 490,764
Weighted Average Yield	2.20%	2.60%
FNMA and FHLMC certificates | Due after 10 years | Mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 297,713	$ 314,710
Gross Unrealized Gains	0	0
Gross Unrealized Losses	48,515	56,767
Fair Value	$ 249,198	$ 257,943
Weighted Average Yield	1.73%	1.72%
US Treasury securities | Due less than 1 year | Investment securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost		$ 199,314
Gross Unrealized Gains		0
Gross Unrealized Losses		1,548
Fair Value		$ 197,766
Weighted Average Yield		3.33%
Other debt securities available for sale | Due from 1 to 5 years | Investment securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 35,000	$ 35,000
Gross Unrealized Gains	51	55
Gross Unrealized Losses	0	0
Fair Value	$ 35,051	$ 35,055
Weighted Average Yield	6.20%	6.36%

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