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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