INVESTMENT SECURITIES (Schedule of amortized cost and fair value of securities available-for-sale) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Schedule of Available-for-sale Securities [Line Items]
Investment securities available for sale, at fair value	$ 505,728	$ 566,624
Available-for-sale Securities.
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	549,907	578,608
Gross Unrealized/Unrecognized Gains	46	842
Gross Unrealized/Unrecognized Losses	(44,225)	(12,826)
Investment securities available for sale, at fair value	505,728	566,624
Available-for-sale Securities. \| U.S. Government agency securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	67,995	67,994
Gross Unrealized/Unrecognized Gains		0
Gross Unrealized/Unrecognized Losses	(5,249)	(1,660)
Investment securities available for sale, at fair value	62,746	66,334
Available-for-sale Securities. \| U.S. State and Municipal securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	11,761	11,799
Gross Unrealized/Unrecognized Gains		0
Gross Unrealized/Unrecognized Losses	(1,523)	(300)
Investment securities available for sale, at fair value	10,238	11,499
Available-for-sale Securities. \| Residential MBS
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	448,457	476,393
Gross Unrealized/Unrecognized Gains	5	623
Gross Unrealized/Unrecognized Losses	(36,341)	(10,465)
Investment securities available for sale, at fair value	412,121	466,551
Available-for-sale Securities. \| Commercial MBS
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	17,217	17,787
Gross Unrealized/Unrecognized Gains	41	219
Gross Unrealized/Unrecognized Losses	(1,050)	(379)
Investment securities available for sale, at fair value	16,208	17,627
Available-for-sale Securities. \| Asset-backed Securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4,477	4,635
Gross Unrealized/Unrecognized Gains		0
Gross Unrealized/Unrecognized Losses	(62)	(22)
Investment securities available for sale, at fair value	$ 4,415	$ 4,613

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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Amortized cost of 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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