Quarterly report pursuant to Section 13 or 15(d)

Description of Business and Summary of Significant Accounting Policies (Details) - Schedule of cash and cash equivalent and restricted cash

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Description of Business and Summary of Significant Accounting Policies (Details) - Schedule of cash and cash equivalent and restricted cash - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Sep. 30, 2020
Dec. 31, 2019
Schedule of cash and cash equivalent and restricted cash [Abstract]        
Cash and cash equivalents $ 82,032 $ 63,560    
Restricted cash – current 48 48    
Restricted cash – long-term 392 391    
Cash, cash equivalents and restricted cash $ 82,472 $ 63,999 $ 48,673 $ 9,693