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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Concentration Risk [Line Items] |  |  |
Revenue recognized that was included within the deferred revenue balance | $ 40,400,000 | $ 54,100,000 |
Amortization of capitalized contract costs | 2,100,000 | 2,300,000 | $ 2,200,000
Capitalized software impairment | 1,800,000 |  |
Leasehold improvement impairment charge | 4,300,000 |  |
Impairment charges of property and equipment |  | 0 | 0
Impairment of goodwill | 0 | 0 | 0
Foreign currency remeasurement gain (loss) | (315,000) | (1,453,000) | 2,685,000
Advertising expense | $ 300,000 | $ 500,000 | $ 700,000
Accounts Receivable | Customer Concentration Risk | Two Customers |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk | 10.00% | 10.00% |
Net Revenue | Customer Concentration Risk | Comcast |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk | 44.00% | 44.00% | 39.00%
Net Revenue | Customer Concentration Risk | Charter Communications |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk |  | 18.00% |
TVN |  |  |
Concentration Risk [Line Items] |  |  |
Research and development tax credits receivables from French government | $ 5,900,000 | $ 6,200,000 | $ 5,400,000
Foreign Exchange Forward |  |  |
Concentration Risk [Line Items] |  |  |
Derivative, term of contract (in months) | 3 months |  |
Other Expense |  |  |
Concentration Risk [Line Items] |  |  |
Foreign currency remeasurement gain (loss) | $ 2,400,000 | $ (200,000) | $ (300,000)
Minimum |  |  |
Concentration Risk [Line Items] |  |  |
Lessee, operating lease, term of contract (in years) | 1 year |  |
Minimum | Net Revenue | Customer Concentration Risk | Comcast |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk | 10.00% |  |
Minimum | Net Revenue | Customer Concentration Risk | Charter Communications |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk | 10.00% |  |
Maximum |  |  |
Concentration Risk [Line Items] |  |  |
Lessee, operating lease, term of contract (in years) | 8 years |  |
Furniture and fixtures |  |  |
Concentration Risk [Line Items] |  |  |
Property, plant and equipment estimated useful life (in years) | 5 years |  |
Software |  |  |
Concentration Risk [Line Items] |  |  |
Property, plant and equipment estimated useful life (in years) | 3 years |  |
Machinery and equipment |  |  |
Concentration Risk [Line Items] |  |  |
Property, plant and equipment estimated useful life (in years) | 4 years |  |

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