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INVESTMENT SECURITIES (Investment Securities by Contractual Maturity - HTM) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 359,806	$ 367,507
Fair Value	329,969	363,653
Due after 10 years | Mortgage-backed securities | FNMA and FHLMC certificates
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	359,806	367,507
Gross Unrealized Gains	0	0
Gross Unrealized Losses	29,837	3,854
Fair Value	$ 329,969	$ 363,653
Weighted Average Yield	1.71%	1.71%

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Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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