Nature of Organization and Operations - Additional Information (Detail) $ in Thousands			3 Months Ended						9 Months Ended
	Aug. 26, 2021 USD ($) shares	May 16, 2021	Sep. 30, 2021 USD ($) shares	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Sep. 30, 2021 USD ($) shares	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($) shares
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Issuance of common stock, Shares | shares	2,558,218
Anniversary effective term period	20 years
Aggregate proceeds from issuance of common stock			$ 155,000						$ 155,000
Aggregate net proceeds from issuance of common stock	$ 145,400		$ 145,400						$ 145,400
Common stock, shares outstanding | shares	2,500,000		20,883,454						20,883,454		2,542,358
Accumulated deficit			$ (126,695)						$ (126,695)		$ (32,595)
Net and comprehensive loss			(87,088)	$ (1,536)	$ (5,476)	$ (2,892)	$ (5,282)	$ (3,324)	(94,100)	$ (11,498)
Cash received from Aerpio in merger									29,700
Cash received from Aerpio in merger, net									27,700
Cash received from Aerpio in merger after compensation expenses									2,000
Cash and cash equivalents			$ 161,375						161,375		$ 4,455
PIPE Investors [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Ownership percentage on common stock	55.60%
Aggregate proceeds from issuance of common stock									$ 155,000
Former Shareholders of Aadi [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Ownership percentage on common stock	29.20%
Former Stockholders/Executives of Aerpio Upon Merger [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Ownership percentage on common stock	15.20%
Merger Agreement [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Date of acquisition agreement		May 16, 2021
Reverse stock split ratio	15
Exchange ration of shares of common stock | shares	0.3172
Issuance of common stock, Shares | shares	5,776,660
Percentage of cumulative dividend on preferred stock	4.00%
Preferred stock value	$ 4,400
Merger Agreement [Member] | Private Investment in Public Equity [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Aggregate net proceeds from issuance of common stock	$ 145,400
Common stock, shares outstanding | shares	20,800,000
Merger Agreement [Member] | CVR Agreement [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Percentage of proceeds plus reimbursement of expenses	10.00%
Merger Agreement [Member] | Subscription Agreements [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Date of acquisition agreement		May 16, 2021
Merger Agreement [Member] | Subscription Agreements [Member] | Private Investment in Public Equity [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Issuance of common stock, Shares | shares	11,852,862
Aggregate proceeds from issuance of common stock	$ 155,000
Merger Agreement [Member] | Registration Rights Agreements [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Date of acquisition agreement	Aug. 26, 2021