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Consolidated Financial Statement Components - Depreciation, Amortization and Accretion (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Property, Plant and Equipment [Line Items] |  |  |  |
Total depreciation | $ 1,103 | $ 658 | $ 3,276 | $ 2,123
Accretion | 164 | 170 | 492 | 510
Depreciation and accretion | 1,267 | 828 | 3,768 | 2,633
Leasehold improvements |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Depreciation | 24 | 16 | 51 | 51
Asset retirement costs |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Asset retirement costs | 66 | (176) | 196 | (526)
Paging and computer equipment |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Depreciation | 959 | 763 | 2,864 | 2,413
Furniture, fixtures and vehicles |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Depreciation | $ 54 | $ 55 | $ 165 | $ 185

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- Definition The aggregate net amount of depreciation, amortization, and accretion recognized during an accounting period. As a noncash item, the net amount is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
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