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Fair Value Measurement - Summary of Reconciliation of Warrant Liabilities Measured at Fair Value (Detail)

v3.21.2
Fair Value Measurement - Summary of Reconciliation of Warrant Liabilities Measured at Fair Value (Detail) - Fair Value, Inputs, Level 1 [Member] - Fair Value, Recurring [Member] - Cerberus Telecom Acquisition Corp [Member] - USD ($)
 2 Months Ended 6 Months Ended
Dec. 31, 2020
Nov. 10, 2020
Jun. 30, 2021
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Beginning balance $ 9,713,800 $ 0 $ 12,030,850
Changes in valuation inputs or other assumptions 2,317,050 1,462,000 2,673,525
Ending balance 12,030,850 9,713,800 14,704,375
IPO [Member]      
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Initial measurement   7,912,000  
Over-Allotment Option [Member]      
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Initial measurement   339,800  
Public Warrants [Member]      
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Beginning balance 9,416,472 0 11,662,600
Changes in valuation inputs or other assumptions 2,246,128 1,416,667 2,591,692
Ending balance 11,662,600 9,416,472 14,254,292
Public Warrants [Member] | IPO [Member]      
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Initial measurement   7,666,666  
Public Warrants [Member] | Over-Allotment Option [Member]      
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Initial measurement   333,139  
Private Placement Warrants [Member]      
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Beginning balance 297,328 0 368,250
Changes in valuation inputs or other assumptions 70,922 45,333 81,833
Ending balance $ 368,250 297,328 $ 450,083
Private Placement Warrants [Member] | IPO [Member]      
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Initial measurement   245,334  
Private Placement Warrants [Member] | Over-Allotment Option [Member]      
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Initial measurement   $ 6,661