SEGMENT REPORTING - Key Operating Results of Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Interest income	$ 89,971	$ 61,403	$ 169,115	$ 120,541
Interest expense	8,166	3,493	12,816	8,402
Net interest income	81,805	57,910	156,299	112,139
Provision for credit losses	173	44	(619)	404
Noninterest income	13,400	14,035	28,827	25,943
Noninterest expense	48,805	35,617	96,423	70,128
Income before taxes on income	46,227	36,284	89,322	67,550
Operating Segments | Banking
Segment Reporting Information [Line Items]
Interest income	89,971	61,403	169,115	120,541
Interest expense	6,476	3,387	9,889	8,235
Net interest income	83,495	58,016	159,226	112,306
Provision for credit losses	173	44	(619)	404
Noninterest income	5,857	7,199	13,388	12,508
Noninterest expense	42,032	28,868	82,133	57,447
Income before taxes on income	47,147	36,303	91,100	66,963
Operating Segments | Wealth Management
Segment Reporting Information [Line Items]
Noninterest income	7,980	7,240	16,325	14,163
Noninterest expense	6,189	5,372	12,833	11,103
Income before taxes on income	1,791	1,868	3,492	3,060
Other.
Segment Reporting Information [Line Items]
Interest expense	1,690	106	2,927	167
Net interest income	(1,690)	(106)	(2,927)	(167)
Noninterest income	(437)	(404)	(886)	(728)
Noninterest expense	584	1,377	1,457	1,578
Income before taxes on income	$ (2,711)	$ (1,887)	$ (5,270)	$ (2,473)