Stock-Based Compensation - Additional Information (Detail) - USD ($)	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share based awards, Common stock reserved for issuance	163,383,103	133,651,483
Number of stock awards issued	$ 0	$ 0
Unrecognised compensation cost, recognition period	2 years 6 months
Restricted Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of shares subject to repurchase	0
Fair value of restricted stock awards vested	$ 0
Unrecognised compensation cost	$ 0
Restricted Stock [Member] \| Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share based awards, vesting period	4 years
Restricted Stock [Member] \| Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share based awards, vesting period	2 years
Share-Based Payment Arrangement, Option [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share based awards, Common stock reserved for issuance	23,165,393	22,997,639
Share based awards, maximum contractual term	10 years
Share based awards, vesting period	4 years
Weighted-average grant date fair value, options granted	$ 0.4
Total intrinsic value of options exercised	$ 100,000
Fair value of options vested	1,400,000
Unrecognised compensation cost	$ 3,000,000
Two Thousand Seventeen Stock Option and Grant Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share based awards, Common stock reserved for issuance	25,956,535
Share based awards, maximum contractual term	10 years
Share based awards, shares available for future grant	1,167,685

Aggregate number of common shares reserved for future issuance.

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