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BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) $ / shares in Units, $ in Thousands |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Aug. 12, 2022 USD ($) $ / shares shares | Sep. 08, 2021 shares | Dec. 31, 2022 USD ($) segment $ / shares | Dec. 31, 2021 USD ($) $ / shares | Dec. 31, 2020 USD ($) | Aug. 29, 2022 USD ($) | Dec. 01, 2020 USD ($)
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Common stock, par value (in dollars per share) | $ / shares |  |  | $ 0.0001 | $ 0.0001 |  |  |
Offering expenses paid |  |  | $ 1,654 | $ 0 | $ 0 |  |
Maximum measurement period from the acquisition date within which company records adjustments to the assets acquired and liabilities assumed (in years) |  |  | 1 year |  |  |  |
Revenue agreement term (in years) |  |  | 1 year |  |  |  |
Number of operating segments | segment |  |  | 2 |  |  |  |
Term debt balance |  |  | $ 330,493 | 344,453 |  |  |
Fair value of debt |  |  | 323,000 |  |  |  |
Intangible assets, net |  |  | 294,728 | 350,730 |  |  |
Restricted cash |  |  | 161 | 2,570 |  |  |
Cash received from the sale of certain accounts receivable |  |  | 73,400 | 118,500 |  |  |
Interest expense |  |  | 1,100 | 800 |  |  |
Foreign currency exchange losses |  |  | 1,576 | 5,002 | 2,961 |  |
Advertising expense |  |  | 1,500 | 1,600 | 800 |  |
Accrued expenses and other |  |  | 5,300 | 5,900 |  |  |
Other long-term liabilities |  |  | 6,600 | 7,200 |  |  |
Warranty |  |  | $ 11,857 | 13,120 | 14,855 |  |
Percent threshold (as a percent) |  |  | 50.00% |  |  |  |
General and Administrative Expense |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Foreign currency exchange losses |  |  | $ 1,600 | 5,000 | $ 3,000 |  |
Restricted Short-term Bank Deposits |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Restricted cash |  |  | $ 200 |  |  |  |
Leasehold improvements |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Property and equipment, useful life (in years) |  |  | 5 years |  |  |  |
Internal use software |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Property and equipment, useful life (in years) |  |  | 3 years |  |  |  |
Minimum |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Property and equipment, useful life (in years) |  |  | 2 years |  |  |  |
Standard product warranty period (in years) |  |  | 1 year |  |  |  |
Minimum | Internal use software |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Property and equipment, useful life (in years) |  |  | 2 years |  |  |  |
Maximum |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Property and equipment, useful life (in years) |  |  | 5 years |  |  |  |
Standard product warranty period (in years) |  |  | 3 years |  |  |  |
Maximum | Internal use software |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Property and equipment, useful life (in years) |  |  | 5 years |  |  |  |
Licensing Agreements |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Intangible assets, net |  |  | $ 4,699 |  |  |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Fair value of AVCT units |  |  | 0 |  |  | $ 2,600 |
Payments for settlement agreement |  |  |  |  |  | $ 2,500 |
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Licensing Agreements |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Intangible assets, net |  |  | $ 3,900 |  |  |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Kandy Communications Business |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Debt conversion, converted instrument, shares issued (in shares) | shares |  | 13,700,421 |  |  |  |  |
Fair value of AVCT units |  |  |  | $ 43,900 |  |  | $ 84,900
Operating Segments |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Number of operating segments | segment |  |  | 2 |  |  |  |
Private Placement |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Sale of stock, number of shares issued in transaction (in shares) | shares | 17,071,311 |  |  |  |  |  |
Common stock, par value (in dollars per share) | $ / shares | $ 0.0001 |  |  |  |  |  |
Sale of stock (in dollars per share) | $ / shares | $ 3.05 |  |  |  |  |  |
Sale of stock, consideration received on transaction | $ 52,100 |  |  |  |  |  |
Offering expenses paid | 1,700 |  |  |  |  |  |
Private Placement | Majority Shareholder |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |
Sale of stock, consideration received on transaction | $ 10,000 |  |  |  |  |  |

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