XML 59 R48.htm IDEA: XBRL DOCUMENT v3.21.2
Revenue and Related Matters - Additional Information1 (Detail)
Jun. 30, 2021
Maximum [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-07-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Performance obligation, revenue expected to be recognized 24 months