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Prepaid expenses and other current assets
 9 Months Ended
Sep. 30, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Prepaid expenses and other current assets Prepaid expenses and other current assets
Prepaid expenses and other current assets consisted of the following:
September 30,December 31,
20212020
(In thousands)
Prepaid insurance and other$1,011 $525 
Vendor prepayments8,058 282 
Total$9,069 $807