INVESTMENTS (Summary of Amortized Cost and Fair Value of Held to Maturity Securities) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Schedule of Investments [Line Items]
Held-to-maturity securities, at amortized cost	$ 546,520	$ 1,291
Unrealized Gains	223	89
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(9,205)	0
Held-to-maturity securities, fair value	537,538	1,380
US Government-sponsored Enterprises Debt Securities [Member]
Schedule of Investments [Line Items]
Held-to-maturity securities, at amortized cost	7,389
Unrealized Gains	0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(158)
Held-to-maturity securities, fair value	7,231
Obligations of states and political subdivisions
Schedule of Investments [Line Items]
Held-to-maturity securities, at amortized cost	55,837	1,291
Unrealized Gains	223	89
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(816)	0
Held-to-maturity securities, fair value	55,244	$ 1,380
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Investments [Line Items]
Held-to-maturity securities, at amortized cost	329,542
Unrealized Gains	0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(5,529)
Held-to-maturity securities, fair value	324,013
Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises
Schedule of Investments [Line Items]
Held-to-maturity securities, at amortized cost	151,384
Unrealized Gains	0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(2,593)
Held-to-maturity securities, fair value	148,791
Subordinated corporate bonds
Schedule of Investments [Line Items]
Held-to-maturity securities, at amortized cost	2,368
Unrealized Gains	0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(109)
Held-to-maturity securities, fair value	$ 2,259