Short-Term and Long-Term Investments - Amortized Cost and Estimated Fair Value of Available-for-Sale Securities by Contractual Maturities (Detail) $ in Thousands	Mar. 31, 2022 USD ($)
Failed Auction Security [Member]
Schedule of Available-for-sale Securities [Line Items]
Due in twenty to forty years, Cost	$ 3,000
Due in twenty to forty years, Estimated Fair Value	2,536
US Treasury Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Maturities greater than three months but less than one year, Cost	20,137
Maturities greater than three months but less than one year, Estimated Fair Value	$ 20,003