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Revenue and Related Matters - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]        
Contract assets $ 0 $ 0 $ 0 $ 0
Deferred revenue recognized 27,900,000 31,900,000 153,800,000 171,200,000
Revenue expected to be recognized 338,900,000   338,900,000  
Amortization expense related to deferred commissions $ 9,200,000 $ 10,400,000 28,300,000 32,200,000
Impairment of deferred commissions     $ 0 $ 0
Maximum [Member]        
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]        
Contract with customer, expected payment term     one year