Fair Value Measurements - Assets and Liabilities Carried at Fair Value and Measured on Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member] $ in Thousands	Dec. 31, 2024 USD ($)
Assets:
Total short-term investments	$ 77,705
Liabilities:
Total Notes	415,690
2025 Notes [Member]
Liabilities:
Total Notes	3,030
2026 Notes [Member]
Liabilities:
Total Notes	412,660
Pooled Bond Funds [Member]
Assets:
Total short-term investments	77,705
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets:
Total short-term investments	0
Liabilities:
Total Notes	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| 2025 Notes [Member]
Liabilities:
Total Notes	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| 2026 Notes [Member]
Liabilities:
Total Notes	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Pooled Bond Funds [Member]
Assets:
Total short-term investments	0
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Total short-term investments	77,705
Liabilities:
Total Notes	415,690
Significant Other Observable Inputs (Level 2) [Member] \| 2025 Notes [Member]
Liabilities:
Total Notes	3,030
Significant Other Observable Inputs (Level 2) [Member] \| 2026 Notes [Member]
Liabilities:
Total Notes	412,660
Significant Other Observable Inputs (Level 2) [Member] \| Pooled Bond Funds [Member]
Assets:
Total short-term investments	77,705
Significant Unobservable Inputs (Level 3) [Member]
Assets:
Total short-term investments	0
Liabilities:
Total Notes	0
Significant Unobservable Inputs (Level 3) [Member] \| 2025 Notes [Member]
Liabilities:
Total Notes	0
Significant Unobservable Inputs (Level 3) [Member] \| 2026 Notes [Member]
Liabilities:
Total Notes	0
Significant Unobservable Inputs (Level 3) [Member] \| Pooled Bond Funds [Member]
Assets:
Total short-term investments	$ 0