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Cash, Cash Equivalents and Investments - Amortized Cost to Fair Value (Detail) $ in Thousands | Dec. 31, 2022 USD ($)
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Debt Securities, Available-for-sale [Line Items] |
Amortized Cost | $ 699,693
Gross Unrealized Gains | 743
Gross Unrealized Losses | (27,560)
Fair Value, Total | 672,876
Treasury Bills [Member] |
Debt Securities, Available-for-sale [Line Items] |
Fair Value, Total | 55,546
Treasury Bills [Member] | Long-term investments [Member] |
Debt Securities, Available-for-sale [Line Items] |
Amortized Cost | 44,333
Gross Unrealized Gains | 79
Gross Unrealized Losses | (198)
Fair Value, Total | 44,214
Treasury Bills [Member] | Short-term Investments [Member] |
Debt Securities, Available-for-sale [Line Items] |
Amortized Cost | 11,602
Gross Unrealized Gains | 0
Gross Unrealized Losses | (270)
Fair Value, Total | 11,332
Asset-Backed Securities [Member] |
Debt Securities, Available-for-sale [Line Items] |
Fair Value, Total | 60,429
Asset-Backed Securities [Member] | Long-term investments [Member] |
Debt Securities, Available-for-sale [Line Items] |
Amortized Cost | 35,144
Gross Unrealized Gains | 103
Gross Unrealized Losses | (1,708)
Fair Value, Total | 33,539
Asset-Backed Securities [Member] | Short-term Investments [Member] |
Debt Securities, Available-for-sale [Line Items] |
Amortized Cost | 27,607
Gross Unrealized Gains | 0
Gross Unrealized Losses | (717)
Fair Value, Total | 26,890
Corporate Bonds [Member] |
Debt Securities, Available-for-sale [Line Items] |
Fair Value, Total | 538,495
Corporate Bonds [Member] | Long-term investments [Member] |
Debt Securities, Available-for-sale [Line Items] |
Amortized Cost | 394,576
Gross Unrealized Gains | 561
Gross Unrealized Losses | (20,697)
Fair Value, Total | 374,440
Corporate Bonds [Member] | Short-term Investments [Member] |
Debt Securities, Available-for-sale [Line Items] |
Amortized Cost | 167,558
Gross Unrealized Gains | 0
Gross Unrealized Losses | (3,503)
Fair Value, Total | 164,055
Sovereign Bonds [Member] |
Debt Securities, Available-for-sale [Line Items] |
Fair Value, Total | 1,924
Sovereign Bonds [Member] | Long-term investments [Member] |
Debt Securities, Available-for-sale [Line Items] |
Amortized Cost | 2,095
Gross Unrealized Gains | 0
Gross Unrealized Losses | (171)
Fair Value, Total | 1,924
Municipal Bonds [Member] |
Debt Securities, Available-for-sale [Line Items] |
Fair Value, Total | 624
Municipal Bonds [Member] | Short-term Investments [Member] |
Debt Securities, Available-for-sale [Line Items] |
Amortized Cost | 635
Gross Unrealized Gains | 0
Gross Unrealized Losses | (11)
Fair Value, Total | 624
Agency Bonds [Member] |
Debt Securities, Available-for-sale [Line Items] |
Fair Value, Total | 15,858
Agency Bonds [Member] | Short-term Investments [Member] |
Debt Securities, Available-for-sale [Line Items] |
Amortized Cost | 16,143
Gross Unrealized Gains | 0
Gross Unrealized Losses | (285)
Fair Value, Total | $ 15,858

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