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v3.22.1

Property and Equipment, Net | 3 Months Ended
--- | ---
Mar. 31, 2022
Property and Equipment, Net |
Property and Equipment, Net | 10. Property and Equipment, Net Property and equipment, net consisted of the following (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31,
​ | ​ | 2022 |  | 2021
Computers and telecom equipment | ​ | $ | 329 | ​ | $ | 40
Lab equipment | ​ |  | 568 | ​ |  | 568
Purchased software | ​ |  | 59 | ​ |  | —
Furniture and fixtures | ​ |  | 37 | ​ |  | 37
Leasehold improvements | ​ |  | 538 | ​ |  | 491
Leased equipment | ​ | ​ | 24,217 | ​ | ​ | 21,100
Internal-use software | ​ | ​ | 1,820 | ​ | ​ | 1,029
Sales demo equipment | ​ |  | 2,149 | ​ |  | 1,938
​ | ​ |  | 29,717 | ​ |  | 25,203
Less: Accumulated depreciation and amortization | ​ |  | (4,435) | ​ |  | (3,611)
​ | ​ | $ | 25,282 | ​ | $ | 21,592
​ As of March 31, 2022 and December 31, 2021, the net book value of internal-use software was $1.7 million and $1.0 million, respectively. Depreciation expense and amortization expense related to property and equipment was $0.9 million and $0.5 million for the three months ended March 31, 2022 and 2021, respectively, which included amortization expense of internal-use software of less than $0.1 million and $0 for the three months ended March 31, 2022 and 2021, respectively. Leased equipment and the related accumulated depreciation were as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31,
​ | ​ | 2022 |  | 2021
Leased equipment | ​ | $ | 24,217 | ​ | $ | 21,100
Accumulated depreciation | ​ |  | (3,390) | ​ |  | (2,761)
Leased equipment, net | ​ | $ | 20,827 | ​ | $ | 18,339
​ Depreciation related to leased units was $0.8 million and $0.4 million during the three months ended March 31, 2022 and 2021, respectively. Depreciable lives generally range from 4 to 7 years, consistent with the Company’s planned and historical usage of the equipment subject to operating leases. Impairment of property and equipment was $0.1 million for the three months ended March 31, 2022. There was no impairment recognized for the three months ended March 31, 2021. This related to Edge units and Express prototype units that were removed from service and retired. The Company is transitioning its domestic customers from the Edge units to the most current Express units, which also resulted in an impairment of the remaining economic value of such assets.

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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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