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Share-based Compensation - Additional Information (Detail) ¥ in Thousands, $ in Thousands			12 Months Ended
	Sep. 28, 2019 shares	Dec. 23, 2016 shares	Dec. 31, 2022 CNY (¥) shares	Dec. 31, 2022 USD ($) shares	Dec. 31, 2021 CNY (¥) shares	Dec. 31, 2020 CNY (¥) shares	Dec. 31, 2022 USD ($)
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted			876,380	876,380	4,790,000	2,363,000
Total fair value of RSUs vested			¥ 96,898	$ 14,049	¥ 121,131	¥ 54,036
Unrecognized share-based compensation expenses			¥ 158,870				$ 23,034
Unrecognized share-based compensation expenses, weighted average vesting period			1 year 10 months 24 days	1 year 10 months 24 days
Restricted Stock Units (RSUs) [Member] | One Year Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation arrangement by share based payment award equity other than options vesting period			1 year	1 year
Share based compensation by share based award equity instruments other than options subject to service condition			5,000	5,000
Restricted Stock Units (RSUs) [Member] | Two Year Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation arrangement by share based payment award equity other than options vesting period			2 years	2 years
Share based compensation by share based award equity instruments other than options subject to service condition			451,380	451,380
Restricted Stock Units (RSUs) [Member] | Four Year Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation arrangement by share based payment award equity other than options vesting period			4 years	4 years
Share based compensation by share based award equity instruments other than options subject to service condition			7,573,000	7,573,000
Share Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate number of ordinary shares that may be issued pursuant to all share-based awards		8,867,053
Percentage of total outstanding shares on a fully diluted basis allowed for share-based awards		15.00%
Share Incentive Plan 2019 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate number of ordinary shares that may be issued pursuant to all share-based awards	7,747,019
Percentage of total outstanding shares on a fully diluted basis allowed for share-based awards	15.00%
Share Incentive Plan 2019 [Member] | Restricted Stock Units (RSUs) [Member] | Share-based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to stock options | ¥			¥ 0		¥ 0	¥ 0
Share Incentive Plan 2019 [Member] | Restricted Stock Units (RSUs) [Member] | Share-based Payment Arrangement, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted			876,380	876,380	4,790,000	1,613,000
Unrecognized compensation cost related to stock options | ¥			¥ 0		¥ 0	¥ 821
Share Incentive Plan 2015 [Member] | Restricted Stock Units (RSUs) [Member] | Share-based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted			0	0	0	750,000

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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