REVENUE FROM CONTRACTS WITH CUSTOMERS (Schedule of Noninterest Income by Operating Segment) (Details) - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Service charges on deposits
Overdraft fees		$ 117,000	$ 88,000	$ 297,000	$ 307,000
Interchange income		374,000	319,000	1,061,000	869,000
Other		468,000	378,000	1,343,000	1,120,000
Wealth management fees	[1]	13,860,000	10,119,000	39,025,000	30,070,000
Gains on sales of OREO				51,000
Other	[2]	2,962,000	9,307,000	11,502,000	14,988,000
Total other income		17,781,000	20,211,000	53,279,000	47,354,000
Banking [Member]
Service charges on deposits
Overdraft fees		117,000	88,000	297,000	307,000
Interchange income		374,000	319,000	1,061,000	869,000
Other		468,000	378,000	1,343,000	1,120,000
Wealth management fees	[1]	0	0	0	0
Gains on sales of OREO				51,000
Other	[2]	2,517,000	8,666,000	10,058,000	13,740,000
Total other income		3,476,000	9,451,000	12,810,000	16,036,000
Wealth Management Division [Member]
Service charges on deposits
Overdraft fees		0	0	0	0
Interchange income		0	0	0	0
Other		0	0	0	0
Wealth management fees	[1]	13,860,000	10,119,000	39,025,000	30,070,000
Other	[2]	445,000	641,000	1,444,000	1,248,000
Total other income		$ 14,305,000	$ 10,760,000	$ 40,469,000	$ 31,318,000

[1] Includes investment brokerage fees.

[2] All of the other category is outside the scope of ASC 606.