Quarterly report pursuant to Section 13 or 15(d)

Investments in Marketable Debt Securities, Available-for-Sale - Additional Information (Detail)

v3.22.2
Investments in Marketable Debt Securities, Available-for-Sale - Additional Information (Detail)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2022
USD ($)
Dec. 31, 2021
Schedule of Available-for-sale Securities [Line Items]    
Weighted average contractual maturity 1 year 3 months 18 days 1 year 6 months
Fitch, AA Rating [Member] | Moody's, Aaa Rating [Member] | Standard & Poor's, AA Rating [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Weighted average contractual maturity 1 year 3 months 18 days  
Fitch, AA+ Rating [Member] | Moody's, Aa3 Rating [Member] | Standard & Poor's, AA+ Rating [Member] | Weighted Average Credit AA Plus Rating [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale, securities number of unrealized loss positions 216  
Available-for-sale, securities in unrealized loss positions, accumulated loss $ 4.6  
Percentage of amortized cost 1.00%