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v3.20.2

Property and equipment | 9 Months Ended
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Sep. 30, 2020
Property Plant And Equipment [Abstract] |
Property and equipment | Note 5. Property and equipment Property and equipment, net consisted of the following (in thousands):
|  |  |  | December 31, |  |  | September 30, |
|  | Useful Life |  | 2019 |  |  | 2020 |
|  |  |  |  |  |  |  | (unaudited) |
Equipment and tooling |  | 3 to 5 years |  | $ | 22,150 |  |  | $ | 23,729 |
Computer equipment |  | 3 to 5 years |  |  | 2,888 |  |  |  | 3,039 |
Furniture and fixtures |  | 10 years |  |  | 749 |  |  |  | 742 |
Leasehold improvements |  | 2 to 3 years |  |  | — |  |  |  | 282 |
Total cost |  |  |  |  | 25,787 |  |  |  | 27,792 |
Less: Accumulated depreciation |  |  |  |  | (17,473 | ) |  |  | (20,165 | )
Property and equipment, net |  |  |  | $ | 8,314 |  |  | $ | 7,627 |
Total depreciation expense was $0.9 million and $0.9 million for the three-month periods ended September 30, 2019 and 2020, respectively and $2.6 million and $2.8 million for the nine-month periods ended September 30, 2019 and 2020, respectively.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=120429125&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99779-112916 + Details
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