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Nature of Business and Significant Accounting Policies - Narrative (Details) |  |  |  |  | 1 Months Ended | 2 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 22, 2020 USD ($) | May 12, 2020 USD ($) | Mar. 06, 2020 USD ($) $ / shares shares | Aug. 09, 2019 USD ($) shares | Jan. 31, 2021 USD ($) $ / shares shares | Mar. 01, 2021 USD ($) shares | Dec. 31, 2020 USD ($) $ / shares | Jun. 30, 2020 USD ($) | Mar. 31, 2020 USD ($) shares | Dec. 31, 2020 USD ($) Segments $ / shares shares | Dec. 31, 2019 USD ($) $ / shares
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net loss attributable to Inseego Corp. |  |  |  |  |  |  |  |  |  | $ 111,215,000 | $ 40,125,000
Cash and cash equivalents |  |  |  |  |  |  | $ 40,000,000.0 |  |  | 40,000,000.0 |
Working capital |  |  |  |  |  |  | $ 38,400,000 |  |  | $ 38,400,000 |
Preferred stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  | $ 0.001 |  |  | $ 0.001 | $ 0.001
Preferred stock issued during the period |  |  |  |  |  |  |  |  |  | $ 25,000,000 | $ 10,000,000
2022 Notes conversion to equity |  |  |  |  |  |  |  |  |  | 59,907,000 | 0
Gross proceeds from the issuance of 2025 Notes |  |  |  |  |  |  |  |  |  | 100,000,000 | 0
Cash paid in exchange transaction |  | $ 32,000,000.0 |  |  |  |  |  |  |  | $ 32,062,000 | 0
Number of reportable segments | Segments |  |  |  |  |  |  |  |  |  | 1 |
Impairment of capitalized software |  |  |  |  |  |  |  |  |  | $ 1,410,000 | 0
Impairment of indefinite-lived intangible assets |  |  |  |  |  |  |  |  |  | $ 0 | $ 0
Minimum |  |  |  |  |  |  |  |  |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
General warranty period |  |  |  |  |  |  |  |  |  | 12 months |
Maximum |  |  |  |  |  |  |  |  |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
General warranty period |  |  |  |  |  |  |  |  |  | 36 months |
Buildings |  |  |  |  |  |  |  |  |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment useful lives |  |  |  |  |  |  |  |  |  | 50 years |
Leasehold improvements | Maximum |  |  |  |  |  |  |  |  |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment useful lives |  |  |  |  |  |  |  |  |  | 5 years |
Product tooling |  |  |  |  |  |  |  |  |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment useful lives |  |  |  |  |  |  |  |  |  | 13 months |
Computer equipment, purchased software, vehicles, production equipment, and furniture and fixtures | Minimum |  |  |  |  |  |  |  |  |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment useful lives |  |  |  |  |  |  |  |  |  | 2 years |
Computer equipment, purchased software, vehicles, production equipment, and furniture and fixtures | Maximum |  |  |  |  |  |  |  |  |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment useful lives |  |  |  |  |  |  |  |  |  | 5 years |
Rental assets | Minimum |  |  |  |  |  |  |  |  |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment useful lives |  |  |  |  |  |  |  |  |  | 3 years |
Rental assets | Maximum |  |  |  |  |  |  |  |  |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment useful lives |  |  |  |  |  |  |  |  |  | 4 years |
Series E preferred shares |  |  |  |  |  |  |  |  |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Issuance of shares (in shares) | shares |  |  | 25,000 | 10,000 |  |  |  |  |  |  |
Preferred stock, par value (in dollars per share) | $ / shares |  |  | $ 0.001 |  |  |  | $ 0.001 |  |  | $ 0.001 | $ 0.001
Preferred stock issued during the period |  |  | $ 25,000,000.0 | $ 10,000,000.0 |  |  |  |  |  |  |
Number of shares issued (in shares) | shares |  |  | 25,000 |  |  |  |  |  |  |  |
Purchase price (in dollars per share) | $ / shares |  |  | $ 1,000 |  |  |  |  |  |  |  |
Subsequent event |  |  |  |  |  |  |  |  |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares issued (in shares) | shares |  |  |  |  | 1,516,073 |  |  |  |  |  |
Purchase price (in dollars per share) | $ / shares |  |  |  |  | $ 20.11 |  |  |  |  |  |
Proceeds from sale of stock |  |  |  |  | $ 29,600,000 |  |  |  |  |  |
2025 Notes |  |  |  |  |  |  |  |  |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt conversion amount |  |  |  |  |  |  |  |  |  | $ 13,500,000 |
Conversion (shares) | shares |  |  |  |  |  |  |  |  |  | 1,177,156 |
Value of converted amount |  |  |  |  |  |  | $ 13,500,000 |  |  | $ 13,500,000 |
2025 Notes | Subsequent event |  |  |  |  |  |  |  |  |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt conversion amount |  |  |  |  |  | $ 5,000,000.0 |  |  |  |  |
Conversion (shares) | shares |  |  |  |  |  | 428,669 |  |  |  |  |
Convertible debt | 2022 Notes |  |  |  |  |  |  |  |  |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
2022 Notes conversion to equity |  |  |  |  |  |  |  | $ 59,900,000 |  |  |
Stated interest rate (percent) |  |  |  |  |  |  |  | 5.5 |  |  |
Carrying amount of debt |  | $ 45,000,000.0 |  |  |  |  |  | $ 2,000 |  |  | $ 105,125,000
Debt conversion amount | $ 2,000 |  |  |  |  |  |  |  | $ 59,900,000 |  |
Conversion (shares) | shares |  |  |  |  |  |  |  |  | 13,688,876 |  |
Convertible debt | 2025 Notes |  |  |  |  |  |  |  |  |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stated interest rate (percent) |  | 3.25 |  |  |  |  |  |  |  |  |
Gross proceeds from the issuance of 2025 Notes |  | $ 100,000,000.0 |  |  |  |  |  |  |  |  |
Carrying amount of debt |  |  |  |  |  |  | $ 166,898,000 |  |  | $ 166,898,000 |
Debt issued in exchange transaction |  | $ 80,400,000 |  |  |  |  |  |  |  |  |

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