Nature of business and significant accounting policies.

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Product Warranty Accrual, Period

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Working Capital

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Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.

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- Definition

Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Nature of Business and Significant Accounting Policies - Additional Information (Detail)	3 Months Ended								12 Months Ended
	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2018 USD ($) Segments	Dec. 31, 2017 USD ($)
Nature Of Business And Significant Accounting Policies [Line Items]
Net income (loss) attributable to Inseego Corp.	$ (4,191,000)	$ 10,843,000	$ (6,660,000)	$ (8,050,000)	$ (3,822,000)	$ (13,789,000)	$ (12,024,000)	$ (16,100,000)	$ (8,058,000)	$ (45,735,000)
Cash and cash equivalents	31,000,000								31,000,000
Working capital	$ 30,700,000								$ 30,700,000
Number of reportable segments \| Segments									1
Impairment of indefinite-lived intangible assets									$ 0	300,000
Long-lived assets impairment									$ 700,000	$ 100,000
Internal Use Software
Nature Of Business And Significant Accounting Policies [Line Items]
Property, plant and equipment useful lives									5 years
Minimum
Nature Of Business And Significant Accounting Policies [Line Items]
Property, plant and equipment useful lives									13 months
General warranty period									1 year
Minimum \| Rental Assets
Nature Of Business And Significant Accounting Policies [Line Items]
Property, plant and equipment useful lives									3 years
Maximum
Nature Of Business And Significant Accounting Policies [Line Items]
Property, plant and equipment useful lives									6 years
General warranty period									3 years
Maximum \| Buildings
Nature Of Business And Significant Accounting Policies [Line Items]
Property, plant and equipment useful lives									50 years
Maximum \| Rental Assets
Nature Of Business And Significant Accounting Policies [Line Items]
Property, plant and equipment useful lives									4 years