INVESTMENT SECURITIES (Schedule of amortized cost and fair value of securities held-to-maturity) (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 521,376	$ 382,099
Total Securities	448,900	380,100
Held-to-maturity Securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	521,376	382,099
Gross Unrealized/Unrecognized Gains		410
Gross Unrealized/Unrecognized Losses	(72,508)	(2,401)
Total Securities	448,868	380,108
Held-to-maturity Securities | US Treasury Securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	29,842	29,811
Gross Unrealized/Unrecognized Gains		6
Gross Unrealized/Unrecognized Losses	(2,419)	(43)
Total Securities	27,423	29,774
Held-to-maturity Securities | U.S. State and Municipal securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	15,875	16,055
Gross Unrealized/Unrecognized Gains		299
Gross Unrealized/Unrecognized Losses	(3,308)	0
Total Securities	12,567	16,354
Held-to-maturity Securities | Residential MBS
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	467,543	328,095
Gross Unrealized/Unrecognized Gains		105
Gross Unrealized/Unrecognized Losses	(65,465)	(2,259)
Total Securities	402,078	325,941
Held-to-maturity Securities | Commercial MBS
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	8,116	8,138
Gross Unrealized/Unrecognized Gains		0
Gross Unrealized/Unrecognized Losses	(1,316)	(99)
Total Securities	$ 6,800	$ 8,039