GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Goodwill (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill
Goodwill, beginning balance	$ 18,480,000	$ 18,480,000	$ 18,480,000
Goodwill, resulting from Chartwell acquisition	1,150,000
Goodwill, ending balance	19,630,000	18,480,000	18,480,000
Intangibles
Gross, beginning balance	1,006,000	1,006,000	1,006,000
Accumulated depreciation, beginning balance	(456,000)	(360,000)	(262,000)
Net, beginning balance	550,000	646,000	744,000
Intangibles resulting from Chartwell acquisition	3,220,000
Accumulated Amortization expense	(297,000)	(96,000)	(98,000)
Gross, ending balance	4,226,000	1,006,000	1,006,000
Accumulated depreciation, ending balance	(753,000)	(456,000)	(360,000)
Net, ending balance	3,473,000	550,000	646,000
Intangible Assets, Other Disclosures
Goodwill impairment	0	0
Impairment charges	0	0	$ 0
Chartwell
Intangibles
Net, beginning balance	0
Net, ending balance	3,000,000.0	0
Core Deposit Intangibles
Intangibles
Net, beginning balance	550,000
Net, ending balance	$ 457,000	$ 550,000
Intangible Assets, Other Disclosures
Useful life of core deposit intangible assets	10 years
Customer Relationships | Chartwell
Intangible Assets, Other Disclosures
Amortization period	5 years
Backlog | Chartwell
Intangible Assets, Other Disclosures
Amortization period	5 years 3 months 18 days
Trademark | Chartwell
Intangible Assets, Other Disclosures
Amortization period	15 years
Non-competition agreement | Chartwell
Intangible Assets, Other Disclosures
Amortization period	4 years