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Debt - Narrative (Details) |  |  |  |  |  | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 23, 2017 USD ($) | May 08, 2017 USD ($) | Jan. 09, 2017 USD ($) trading_day $ / shares shares | Jun. 10, 2015 USD ($) $ / shares | Oct. 31, 2014 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Mar. 20, 2017 USD ($) | Nov. 17, 2015 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Loss on extinguishment of debt, net |  |  |  |  |  |  | $ 0 | $ 2,035,000 |  |
Long-term debt |  |  |  |  |  | $ 152,625,000 | 152,625,000 |  |  |
Proceeds from term loans |  |  |  |  |  |  | $ 0 | 64,917,000 |  |
Convertible Debt |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt issuance cost allocated to equity component |  |  |  | $ 1,300,000 |  |  |  |  |  |
Debt issuance costs allocated to liability component |  |  |  | 2,600,000 |  |  |  |  |  |
Effective interest rate |  |  |  |  |  | 15.11% | 15.11% |  |  |
Long-term debt |  |  |  |  |  | $ 93,054,000 | $ 93,054,000 | 84,773,000 |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity of revolving credit facility |  |  |  |  | $ 25,000,000 |  |  |  | $ 10,000,000 | $ 48,000,000
Term of debt instrument |  |  |  |  | 5 years |  |  |  |  |
Absa |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity of revolving credit facility |  |  |  |  |  | 1,000,000 | 1,000,000 |  |  |
Outstanding borrowings under the credit facility |  |  |  |  |  | 1,000,000 | 1,000,000 | 1,900,000 |  |
Grindrod Bank |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity of revolving credit facility |  |  |  |  |  | 600,000 | 600,000 |  |  |
Outstanding borrowings under the credit facility |  |  |  |  |  | $ 400,000 | $ 400,000 | 1,100,000 |  |
Prime Rate | Absa |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Margin on base rate |  |  |  |  |  |  | 0.10% |  |  |
Interest rate at period end |  |  |  |  |  | 10.15% | 10.15% |  |  |
Prime Rate | Grindrod Bank |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Margin on base rate |  |  |  |  |  |  | 1.00% |  |  |
Interest rate at period end |  |  |  |  |  | 11.25% | 11.25% |  |  |
Term Loan [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Convertible debt, face amount |  | $ 20,000,000 |  |  |  |  |  |  |  |
Debt issuance costs |  | 400,000 |  |  |  |  |  |  |  |
Loss on extinguishment of debt, net | $ 1,700,000 |  |  |  |  |  |  |  |  |
Proceeds from term loans |  | 18,000,000 |  |  |  |  |  |  |  |
Unamortized discount |  | $ 2,000,000 |  |  |  |  |  |  |  |
Term Loan [Member] | Secured Debt |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Convertible debt, face amount | 48,000,000 |  |  |  |  |  |  |  |  |
Debt issuance costs | 500,000 |  |  |  |  |  |  |  |  |
Effective interest rate |  |  |  |  |  | 13.71% | 13.71% |  |  |
Long-term debt |  |  |  |  |  | $ 45,046,000 | $ 45,046,000 | $ 44,055,000 |  |
Proceeds from term loans | 46,900,000 |  |  |  |  |  |  |  |  |
Unamortized discount | 4,000,000 |  |  |  |  |  |  |  |  |
Proceeds from issuance of debt, portion funded in cash | $ 35,000,000 |  |  |  |  |  |  |  |  |
Repayments of debt |  |  |  |  |  | $ 500,000 |  |  |  |
Term Loan [Member] | London Interbank Offered Rate (LIBOR) | Secured Debt |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Margin on base rate | 7.625% |  |  |  |  |  |  |  |  |
Term Loan [Member] | London Interbank Offered Rate (LIBOR) | Minimum | Secured Debt |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Convertible debt, stated interest rate | 1.00% |  |  |  |  |  |  |  |  |
Inseego Notes | Convertible Debt |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity of revolving credit facility |  |  | $ 48,000,000.0 |  |  |  |  |  |  |
Convertible debt, face amount |  |  | $ 119,800,000 |  |  |  |  |  |  |
Loss on extinguishment of debt, net | $ 300,000 |  |  |  |  |  |  |  |  |
Convertible debt, stated interest rate |  |  | 5.50% |  |  |  |  |  |  |
Converted instrument, shares issued (in shares) | shares |  |  | 212.7660 |  |  |  |  |  |  |
Conversion price ($ per share) | $ / shares |  |  | $ 4.70 |  |  |  |  |  |  |
Repurchase price as a percentage of principal amount |  |  | 100.00% |  |  |  |  |  |  |
Minimum principal needed to call debt |  |  | 25.00% |  |  |  |  |  |  |
Redemption of principal |  |  | 100.00% |  |  |  |  |  |  |
Company elected remedy in default |  |  | 60 days |  |  |  |  |  |  |
Interest rate during remedy for default |  |  | 0.50% |  |  |  |  |  |  |
Convertible, beneficial conversion feature |  |  | $ 3,600,000 |  |  |  |  |  |  |
Proceeds from issuance of debt, portion funded in repurchase and cancellation of debt | 11,900,000 |  |  |  |  |  |  |  |  |
Extinguishment of debt, amount | $ 14,900,000 |  |  |  |  |  |  |  |  |
Inseego Notes | Convertible Debt | Stock price exceeds 130% of conversion price |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Threshold of trading days | trading_day |  |  | 20 |  |  |  |  |  |  |
Threshold of consecutive trading days |  |  | 30 |  |  |  |  |  |  |
Threshold percentage of stock price trigger |  |  | 130.00% |  |  |  |  |  |  |
Inseego Notes | Convertible Debt | Debt trading price below product of stock price and conversion rate |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Threshold of consecutive trading days |  |  | 5 |  |  |  |  |  |  |
Threshold percentage of stock price trigger |  |  | 98.00% |  |  |  |  |  |  |
Number of consecutive business days |  |  | 5 |  |  |  |  |  |  |
Inseego Notes | Convertible Debt | Stock price exceeds 140% of conversion price |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Threshold of trading days | trading_day |  |  | 20 |  |  |  |  |  |  |
Threshold of consecutive trading days |  |  | 30 |  |  |  |  |  |  |
Threshold percentage of stock price trigger |  |  | 140.00% |  |  |  |  |  |  |
Repurchase price as a percentage of principal amount |  |  | 100.00% |  |  |  |  |  |  |
Novatel Wireless Notes | Convertible Debt |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Convertible debt, face amount |  |  | $ 200,000 | 120,000,000 |  |  |  |  |  |
Debt issuance costs |  |  |  | $ 3,900,000 |  |  |  |  |  |
Convertible debt, stated interest rate |  |  |  | 5.50% |  |  |  |  |  |
Conversion price ($ per share) | $ / shares |  |  |  | $ 5.00 |  |  |  |  |  |
Principal exchanged |  |  | $ 119,800,000 |  |  |  |  |  |  |

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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://fasb.org/us-gaap/role/ref/legacyRef -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://fasb.org/us-gaap/role/ref/legacyRef -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://fasb.org/us-gaap/role/ref/legacyRef -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://fasb.org/us-gaap/role/ref/legacyRef -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 Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644 + Details
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- Definition Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature. + References No definition available. + Details
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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + 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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + 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://fasb.org/us-gaap/role/ref/legacyRef -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 Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount, after accumulated amortization, of debt discount. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition The effective interest rate at the end of the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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