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LEASES - Narrative (Details) |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Jan. 01, 2019 USD ($) item | Jun. 30, 2020 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2019 USD ($) | Dec. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items] |  |  |  |  |  |
Right-of-use assets | $ 750,000 | $ 409,000 |  | $ 409,000 |  | $ 519,000
Lease liabilities | $ 750,000 | 420,000 |  | 420,000 |  | $ 526,000
Operating leases |  |  |  | 100,000 | $ 100,000 |
Right-of-use assets obtained in exchange for lease obligations |  |  |  | 0 | 750,000 |
Minimum |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |
Facility leases | item | 1 |  |  |  |  |
Renewal term | 1 year |  |  |  |  |
Maximum |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |
Renewal term | 5 years |  |  |  |  |
Short-term lease costs |  | $ 100,000 | $ 100,000 | $ 100,000 | $ 100,000 |
ASU 2016-02 |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |
Increase (decrease) in deferred rent and prepaid expenses | $ (6,000) |  |  |  |  |
Current prepaid expense | 6,000 |  |  |  |  |
Cumulative effect adjustment | $ 0 |  |  |  |  |

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- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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