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ACCRUED AND OTHER CURRENT LIABILITIES
 3 Months Ended
Mar. 31, 2022
Payables and Accruals [Abstract]  
ACCRUED AND OTHER CURRENT LIABILITIES ACCRUED AND OTHER CURRENT LIABILITIES
Accrued and other current liabilities consist of the following (in thousands):
March 31, 2022December 31, 2021
Payroll and related benefits$1,552 $1,876 
Materials and related purchases2,596 2,108 
Deferred rent— 142 
Professional and consulting fees1,140 1,820 
Other1,327 541 
Total accrued and other current liabilities$6,615 $6,487