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Commitments and Contingencies - Summary of Maturities of Sublease Income and Operating Lease Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Sublease Income
2025 (remaining)	$ 1,532
2026	6,342
2027	6,564
2028	6,794
2029	7,031
Thereafter	9,160
Total	37,423
Operating Lease Liabilities
2025 (remaining)	1,739
2026	6,711
2027	6,654
2028	6,639
2029	6,483
Thereafter	8,759
Total	36,985
Present value adjustment	(8,801)
Total operating lease liabilities	$ 28,184	$ 30,563

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Amount of lessee's undiscounted obligation for lease payment for operating lease due after fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Lessor sublease rentals payments to be received due year three.

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Lessor sublease rentals payments to be received remainder of fiscal year.

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Amount of lessee's undiscounted obligation for lease payment for operating lease.

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Present value of lessee's discounted obligation for lease payments from operating lease.

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