ACQUISITIONS - Additional Information (Details)	12 Months Ended
	Dec. 31, 2020 USD ($) Acquisition	Dec. 31, 2019 USD ($) Acquisition	Dec. 31, 2018 USD ($) Acquisition	Dec. 31, 2017 USD ($)
Business Acquisition [Line Items]
Number of businesses acquired | Acquisition	2	1	1
Company's acquisition equity	$ 0
Fair value of total consideration transferred		$ 5,000,000.0	$ 4,300,000
Goodwill and identifiable intangible assets	2,900,000	5,800,000	7,300,000
Liabilities Assumed	0	0	0
Goodwill	33,103,000	30,208,000	24,417,000	$ 17,107,000
Goodwill impairment loss	0
Amortization of intangible assets	1,287,000	1,043,000	$ 1,187,000
Murphy Capital Management [Member]
Business Acquisition [Line Items]
Expense Include impairment expense		$ 405,000
Wealth Management [Member]
Business Acquisition [Line Items]
Goodwill	32,500,000
Banking [Member]
Business Acquisition [Line Items]
Goodwill	$ 563,000