| PROPERTY AND EQUIPMENT |
3. Property and Equipment
Depreciation is expensed using the straight‑line method over the estimated useful lives of the assets as follows:
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Asset Classification
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Useful Life
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Equipment
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3‑5 years
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Furniture and fixtures
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3 years
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Computer equipment
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3 years
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Tooling
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3 years
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Software
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3 years
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Leasehold improvements
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Shorter of asset’s useful life or remaining life of the lease
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Property and equipment—net consisted of the following at September 30, 2020 and December 31, 2019 (in thousands):
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September 30, 2020
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December 31, 2019
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Equipment
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$
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13,502
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$
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13,358
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Furniture and fixtures
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895
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895
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Computer equipment
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1,089
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1,089
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Tooling
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1,823
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1,823
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Software
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1,235
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954
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Leasehold improvements
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13,870
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13,880
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Construction in process
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845
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170
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Property and equipment—gross
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33,259
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32,169
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Less: accumulated depreciation
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(19,658)
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(13,782)
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Property and equipment—net
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$
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13,601
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$
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18,387
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Depreciation and amortization expense was $5.9 million and $5.3 million for the nine months ended September 30, 2020 and September 30, 2019 respectively.
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3. PROPERTY AND EQUIPMENT
Depreciation is expensed using the straight‑line method over the estimated useful lives of the assets as follows:
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Asset Classification
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Useful Life
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Equipment
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3‑5 years
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Furniture and fixtures
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3 years
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Computer equipment
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3 Years
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Tooling
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3 Years
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Software
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3 Years
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Leasehold improvements
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Shorter of asset’s useful life or remaining life of the lease
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Property and equipment—net consisted of the following at December 31, 2019 and 2018 (in thousands):
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Years Ended December 31,
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2019
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2018
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Equipment
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$
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13,358
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$
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8,306
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Furniture and fixtures
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895
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875
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Computer equipment
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1,089
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1,045
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Tooling
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1,823
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1,303
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Software
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954
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302
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Leasehold improvements
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13,880
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13,357
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Construction in process
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170
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—
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Property and equipment—gross
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32,169
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25,188
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Less: accumulated depreciation
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(13,782)
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(6,191)
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Property and equipment—net
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$
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18,387
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$
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18,997
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Depreciation and amortization expense was $7.6 million and $4.1 million for the years ended December 31, 2019 and 2018, respectively.
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