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PROPERTY AND EQUIPMENT, NET
 3 Months Ended
Mar. 31, 2022
Property, Plant and Equipment [Abstract]  
PROPERTY AND EQUIPMENT, NET PROPERTY AND EQUIPMENT, NET
Property and equipment, net consist of the following (in thousands):
March 31, 2022December 31, 2021
Machinery and equipment$2,910 $2,868 
Furniture and fixtures88 90 
Leasehold improvements1,030 746 
Construction in process7,944 2,517 
Total property and equipment11,972 6,221 
Less accumulated depreciation(1,916)(1,720)
Total property and equipment, net$10,056 $4,501 
Depreciation and amortization expense related to property and equipment, net was $196 thousand and $130 thousand for the three months ended March 31, 2022 and 2021, respectively.