INVESTMENT SECURITIES (Schedule of amortized cost and fair value of securities held-to-maturity) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 467,893	$ 382,099
Total Securities	436,800	380,100
Held-to-maturity Securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	467,893	382,099
Gross Unrealized/Unrecognized Gains		410
Gross Unrealized/Unrecognized Losses	(31,068)	(2,401)
Total Securities	436,825	380,108
Held-to-maturity Securities | US Treasury Securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	29,821	29,811
Gross Unrealized/Unrecognized Gains		6
Gross Unrealized/Unrecognized Losses	(1,332)	(43)
Total Securities	28,489	29,774
Held-to-maturity Securities | U.S. State and Municipal securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	15,995	16,055
Gross Unrealized/Unrecognized Gains		299
Gross Unrealized/Unrecognized Losses	(1,553)	0
Total Securities	14,442	16,354
Held-to-maturity Securities | Residential MBS
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	413,947	328,095
Gross Unrealized/Unrecognized Gains		105
Gross Unrealized/Unrecognized Losses	(27,486)	(2,259)
Total Securities	386,461	325,941
Held-to-maturity Securities | Commercial MBS
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	8,130	8,138
Gross Unrealized/Unrecognized Gains		0
Gross Unrealized/Unrecognized Losses	(697)	(99)
Total Securities	$ 7,433	$ 8,039