Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.

No definition available.

Name:	dei_AmendmentFlag
Namespace Prefix:	dei_
Data Type:	xbrli:booleanItemType
Balance Type:	na
Period Type:	duration

- Definition

PCAOB issued Audit Firm Identifier

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form 10-K
-Number 249
-Section 310

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form 20-F
-Number 249
-Section 220
-Subsection f

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form 40-F
-Number 249
-Section 240
-Subsection f

Cover - USD ($) $ in Millions	12 Months Ended
Cover - USD ($) $ in Millions	Dec. 31, 2023	Mar. 13, 2024	Jun. 30, 2023
Document Information [Line Items]
Document Type	10-K
Document Period End Date	Dec. 31, 2023
Document Annual Report	true
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-35890
Entity Registrant Name	Tempest Therapeutics, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	45-1472564
Entity Address, Address Line One	2000 Sierra Point Parkway
Entity Address, Address Line Two	Suite 400
Entity Address, City or Town	Brisbane
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94005
City Area Code	(415)
Local Phone Number	798-8589
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Document Financial Statement Error Correction [Flag]	false
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 16.0
Entity Common Stock, Shares Outstanding		22,192,026
Documents Incorporated by Reference	Portions of the registrant’s definitive Proxy Statement for its 2024 Annual Meeting of Stockholders to be filed with the Securities and Exchange Commission pursuant to Regulation 14A not later than 120 days after the end of the fiscal year covered by this Annual Report on Form 10-K are incorporated by reference into Part III of this Annual Report on Form 10-K.
Entity Central Index Key	0001544227
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
ICFR Auditor Attestation Flag	false
Auditor Firm ID	42
Auditor Name	Ernst & Young LLP
Auditor Location	Chicago, Illinois
Common Stock
Document Information [Line Items]
Title of 12(b) Security	Common Stock, $0.001 par value
Trading Symbol	TPST
Security Exchange Name	NASDAQ
Series A Junior Participating Preferred Purchase Rights
Document Information [Line Items]
Title of 12(b) Security	Series A Junior Participating Preferred Purchase Rights
No Trading Symbol Flag	true
Security Exchange Name	NASDAQ