LEASES - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Lessee, Lease, Description [Line Items]
Operating lease, weighted average remaining lease term (years)	9 years 3 days		9 years 3 days
Operating lease, weighted average discount rate	3.34%		3.34%
Operating lease, rent expense	$ 200,000		$ 500,000
Operating lease not yet commenced	$ 0		$ 0
Finance lease, weighted average remaining lease term (years)	10 years 8 months 4 days		10 years 8 months 4 days
Finance lease, weighted average discount rate	3.38%		3.38%
Finance lease not yet commenced	$ 0		$ 0
1365 New Scotland Road, Slingerlands, New York | Director
Lessee, Lease, Description [Line Items]
Operating lease, rent expense			13,000	$ 12,000
Monthly rent and common area maintenance expense			4,000
Rent and common area maintenance expense			25,000	25,000
2 Rush Street, Schenectady, New York | Director
Lessee, Lease, Description [Line Items]
Operating lease, rent expense	$ 25,000	$ 24,000
Monthly rent and common area maintenance expense			8,000
Rent and common area maintenance expense			$ 51,000	$ 50,000