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Debt - Convertible Senior Notes (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  | 9 Months Ended |
--- | --- | --- | --- | ---
Aug. 23, 2017 | Jan. 09, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Jun. 10, 2015
Debt Instrument [Line Items] |  |  |  |  |
Loss on extinguishment of debt, net |  |  | $ 0 | $ 2,035 |
Convertible Debt |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Effective interest rate |  |  | 15.46% |  |
Convertible Debt | Novatel Wireless Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal |  | $ 200 |  |  | $ 120,000
Stated interest rate of debt issued |  |  |  |  | 5.50%
Converted amount |  | 119,800 |  |  |
Conversion price ($ per share) |  |  |  |  | $ 5.00
Debt issuance costs |  |  |  |  | $ 3,900
Convertible Debt | Inseego Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal |  | $ 119,800 |  |  |
Extinguishment of debt, amount | $ 14,900 |  |  |  |
Stated interest rate of debt issued |  | 5.50% |  |  |
Conversion (shares) |  | 212.7660 |  |  |
Conversion price ($ per share) |  | $ 4.70 |  |  |
Redemption price as a percentage of principal amount |  | 100.00% |  |  |
Redemption of principal |  | 100.00% |  |  |
Increase in fair value of equity component |  | $ 3,600 |  |  |
Proceeds from issuance of debt, portion funded in repurchase and cancellation of debt | 11,900 |  |  |  |
Loss on extinguishment of debt, net | $ 300 |  |  |  |
Convertible Debt | Inseego Notes | Debt Instrument, Redemption, Period Three |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Redemption price as a percentage of principal amount |  | 100.00% |  |  |

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- Definition The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586 + Details
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- Definition The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586 + Details
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- Definition Amount of a favorable spread to a debt holder between the amount of debt being converted and the value of the securities received upon conversion. This is an embedded conversion feature of convertible debt issued that is in-the-money at the commitment date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21538-112644 + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
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- Definition Percentage price of original principal amount of debt at which debt can be redeemed by the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph e -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 + Details
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- Definition Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 + Details
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