PREPAID EXPENSES (Details) - USD ($) $ in Thousands	1 Months Ended
Nov. 30, 2017	Dec. 31, 2019
Prepaid Expense, Current		$ 276
City of Hope
Payments to Suppliers	$ 2,665

Amount of asset related to consideration paid in advance for costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant