SECURITIES - Available-for-sale (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Securities available-for-sale:
Amortized Cost	$ 1,007,670	$ 1,071,858
Gross Unrealized Gains	21	59
Gross Unrealized Losses	(137,812)	(121,330)
Fair Value	869,879	950,587
Agency notes
Securities available-for-sale:
Amortized Cost	10,000
Gross Unrealized Losses	(857)
Fair Value	9,143
Treasury securities
Securities available-for-sale:
Amortized Cost	246,135	246,899
Gross Unrealized Losses	(16,262)	(19,643)
Fair Value	229,873	227,256
Corporate securities
Securities available-for-sale:
Amortized Cost	169,549	183,791
Gross Unrealized Gains		57
Gross Unrealized Losses	(28,462)	(17,075)
Fair Value	141,087	166,773
Pass-through MBS issued by GSEs
Securities available-for-sale:
Amortized Cost	239,509	272,774
Gross Unrealized Losses	(33,306)	(31,534)
Fair Value	206,203	241,240
Agency CMOs
Securities available-for-sale:
Amortized Cost	311,632	331,394
Gross Unrealized Gains	21	2
Gross Unrealized Losses	(56,011)	(50,057)
Fair Value	255,642	281,339
State and municipal obligations.
Securities available-for-sale:
Amortized Cost	30,845	37,000
Gross Unrealized Losses	(2,914)	(3,021)
Fair Value	$ 27,931	$ 33,979

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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Amount, before tax, of unrealized loss 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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Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and 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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