GEOGRAPHIC AND SEGMENT INFORMATION (Details)	3 Months Ended	6 Months Ended
Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) segment	Dec. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of reportable operating segment \| segment			3
Long-term assets	$ 24,645,000		$ 24,645,000	$ 24,618,000
Revenues	0	$ 0
United States
Segment Reporting Information [Line Items]
Long-term assets	$ 24,600,000		$ 24,600,000	$ 24,600,000
Percentage of assets (as a percent)	100.00%		100.00%

Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer.

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+ Details