Quarterly report pursuant to Section 13 or 15(d)

Investments in Marketable Debt Securities, Available-for-Sale - Schedule of Amortized Cost and Fair Value of Marketable Securities, Available-for-Sale, by Contractual Maturity (Detail)

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Investments in Marketable Debt Securities, Available-for-Sale - Schedule of Amortized Cost and Fair Value of Marketable Securities, Available-for-Sale, by Contractual Maturity (Detail) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2023
Dec. 31, 2022
Amortized Cost    
Due in one year or less $ 116,989 $ 254,683
Due after one year through five years 55,024 56,507
Due after five years through ten years 12,293 13,435
Due after ten years 7,459 2,876
Amortized Cost 191,765 327,501
Fair Value    
Due in one year or less 116,713 253,434
Due after one year through five years 52,633 54,169
Due after five years through ten years 10,987 11,850
Due after ten years 6,890 2,576
Fair Value $ 187,223 $ 322,029
Weighted average contractual maturity 1 year 10 months 24 days 1 year 1 month 6 days