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Description of Business and Summary of Significant Accounting Policies (Tables)
 9 Months Ended
Sep. 30, 2020
Accounting Policies [Abstract]  
Schedule of cash and cash equivalent and restricted cash
(in thousands)  September 30,
2020		   December 31,
2019		 
Cash and cash equivalents  $48,234   $9,254 
Restricted cash – current   48    48 
Restricted cash – long-term   391    391 
Cash, cash equivalents and restricted cash  $48,673   $9,693 
Schedule of antidilutive securities excluded from computation of diluted net loss per share
(in thousands)  September 30,
2020		   September 30,
2019		 
Options   750    398 
Warrants   2,113    2,878 
Total   2,863    3,276