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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