Quarterly report pursuant to Section 13 or 15(d)

SIGNIFICANT ACCOUNTING POLICIES (Details Narrative)

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SIGNIFICANT ACCOUNTING POLICIES (Details Narrative) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Property, Plant and Equipment [Line Items]          
Restricted cash $ 669,900   $ 669,900   $ 1,019,900
Restricted cash, current 192,475   192,475   350,000
Restricted Cash, noncurrent 477,425   477,425   669,900
Cash and Cash Equivalents, at Carrying Value 37,118,654   37,118,654   85,433,441
Prepaid Expense and Other Assets, Current 2,111,858   2,111,858   3,712,861
Property, Plant and Equipment, Net 2,652,828   2,652,828   4,067,837
Unrecognized Tax Benefits 0   0   0
Cash, cash equivalents and marketable debt securities 106,863,000   106,863,000    
Other income (expense), net 12,033,031 $ (4,972) 11,790,328 $ 4,005  
Impairment charges 606,000   $ 606,078  
Deferred Tax Assets [Member]          
Property, Plant and Equipment [Line Items]          
Valuation allowance     100.00%    
Foreign Tax Authority [Member]          
Property, Plant and Equipment [Line Items]          
Tax credit carryforward 12,300,000   $ 12,300,000    
Other income (expense), net 12,300,000   $ 12,300,000    
Computer Hardware and Software [Member]          
Property, Plant and Equipment [Line Items]          
Property and equipment, estimated useful life     3 years    
Office Furniture and Equipment [Member] | Minimum [Member]          
Property, Plant and Equipment [Line Items]          
Property and equipment, estimated useful life     3 years    
Office Furniture and Equipment [Member] | Maximum [Member]          
Property, Plant and Equipment [Line Items]          
Property and equipment, estimated useful life     5 years    
Leaseholds and Leasehold Improvements [Member]          
Property, Plant and Equipment [Line Items]          
Property, Plant and Equipment, Estimated Useful Lives     The Company’s leasehold improvements and assets under capital lease are amortized over the shorter of their useful lives or the respective leases. See Note 7 for details of property and equipment and Note 8 for operating and capital lease commitments.    
UNITED KINGDOM          
Property, Plant and Equipment [Line Items]          
Cash held in subsidiary 6,610,000   $ 6,610,000   1,033,000
Cash and Cash Equivalents, at Carrying Value         1,033,000
Prepaid Expense and Other Assets, Current 1,729,000   1,729,000   1,837,000
Property, Plant and Equipment, Net 4,000   4,000   $ 23,000
Cash, cash equivalents and marketable debt securities 13,347,000   13,347,000    
Letter of Credit [Member]          
Property, Plant and Equipment [Line Items]          
Restricted cash 669,900   669,900    
Restricted cash, current 192,475   192,475    
Restricted Cash, noncurrent $ 477,425   $ 477,425