Quarterly report pursuant to Section 13 or 15(d)

NATURE OF OPERATIONS AND SIGNIFICANT ACCOUNTING POLICIES (Details Narrative)

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NATURE OF OPERATIONS AND SIGNIFICANT ACCOUNTING POLICIES (Details Narrative) - USD ($)
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Cash, cash equivalents, restricted cash and short-term investments $ 37,200,000    
Cash flow from operating activities 13,687,000 $ 13,585,000  
Depreciation and amortization costs 811,000 $ 817,000  
Restricted cash 5,891,000   $ 5,891,000
General and Administrative to Research and Development Expenses [Member]      
Reclassification of Rent expense 300,000    
Prepaid Expenses, Other Current Assets to Restricted Cash [Member]      
Restricted cash 5,000,000.0    
Other Assets and Restricted Cash to Restricted Cash [Member]      
Restricted cash 900,000    
Research and Development Expense [Member]      
Depreciation and amortization costs 800,000    
General and Administrative Expense [Member]      
Depreciation and amortization costs $ 35,000