LEASES - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Lessee, Lease, Description [Line Items]
Operating lease, weighted average remaining lease term (years)	8 years 5 months 4 days
Operating lease, weighted average discount rate	3.36%
Operating lease, rent expense	$ 200,000
Operating lease not yet commenced	$ 0
Finance lease, weighted average remaining lease term (years)	9 years 11 months 26 days
Finance lease, weighted average discount rate	3.40%
Finance lease not yet commenced	$ 0
1365 New Scotland Road, Slingerlands, New York | Director
Lessee, Lease, Description [Line Items]
Monthly rent and common area maintenance expense	4,000
Rent and common area maintenance expense		$ 13,000
2 Rush Street, Schenectady, New York | Director
Lessee, Lease, Description [Line Items]
Operating lease, rent expense	26,000	$ 26,000
Monthly rent and common area maintenance expense	$ 9,000