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Property and Equipment, Net
 6 Months Ended
Jun. 30, 2021
Property, Plant and Equipment [Abstract]  
Property and Equipment, Net Property and Equipment, Net
Useful
Lives		June 30,
2021		December 31,
2020
Machinery
3-15 years
$18,879 $21,333 
Furniture and fixtures
3-15 years
769 1,209 
Leasehold improvements(a)21,265 21,333 
Computer, network equipment and software
3-7 years
2,402 2,999 
Construction in progress 991 877 
  44,306 47,751 
Less: accumulated depreciation and amortization (38,515)(40,878)
Total property and equipment, net $5,791 $6,873 

(a)Leasehold improvements are amortized over the shorter of the lease term or their estimated useful lives.

Total depreciation, amortization, and impairment related to property and equipment was $728 and $700 for the three-month periods ended June 30, 2021 and 2020, respectively. For the respective six-month periods, these expenses totaled $1,471 and $1,414.