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GEOGRAPHIC AND SEGMENT INFORMATION (Details)	3 Months Ended
	Mar. 31, 2020 USD ($) segment	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of reportable operating segment | segment	3
Long-term assets	$ 24,584,000		$ 24,618,000
Revenues	0	$ 0
United States
Segment Reporting Information [Line Items]
Long-term assets	$ 24,600,000		$ 24,600,000
Percentage of assets (as a percent)	100.00%

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