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SUBSEQUENT EVENTS - FUTURE MINIMUM PAYMENTS UNDER OPERATING LEASE (Details) - New Jersey Office Space Lease - USD ($)
Oct. 01, 2019
Apr. 30, 2019
Subsequent Event [Line Items]    
Total lease payments   $ 3,696,000
Subsequent Event    
Subsequent Event [Line Items]    
2019 $ 27,000  
2020 188,000  
2021 327,000  
2022 334,000  
2023 340,000  
After 2023 2,480,000  
Total lease payments $ 3,696,000