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LEASES - Narrative (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 USD ($) lease | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) lease | Jun. 30, 2020 USD ($)
Lessee, Lease, Description [Line Items] |  |  |  |
Operating lease, weighted average remaining lease term | 9 years 7 months 6 days |  | 9 years 7 months 6 days |
Operating lease, weighted average discount rate | 3.32% |  | 3.32% |
Operating lease, rent expense | $ 200 |  | $ 500 |
Number of operating lease agreements | lease | 1 |  | 1 |
Finance lease, weighted average remaining lease term | 11 years 7 months 6 days |  | 11 years 7 months 6 days |
Finance lease, weighted average discount rate | 3.37% |  | 3.37% |
Financial lease not yet commenced | lease | 0 |  | 0 |
1365 New Scotland Road, Slingerlands, New York | Director |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Operating lease, rent expense | $ 12 | $ 14 | $ 25 | $ 27
Operating lease, monthly rent expense |  |  | 3 |
2 Rush Street, Schenectady, New York | Director |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Operating lease, rent expense | $ 24 | $ 26 | 50 | $ 51
Operating lease, monthly rent expense |  |  | $ 7 |

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- Definition Weighted average discount rate for finance lease calculated at point in time. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(4) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 + Details
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