Amount of accumulated undistributed earnings (deficit).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
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-Name Accounting Standards Codification
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
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-Topic 946
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-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
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+ Details

Description of Business and Basis of Presentation (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2026	Feb. 28, 2026	Jan. 30, 2026	Dec. 31, 2025
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Cash and cash equivalents	$ 86,643			$ 88,932
Accumulated deficit	$ 315,612			$ 326,692
vTv Therapeutics LLC
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Percentage of non-voting economic interest of vTv Therapeutics Inc in vTv LLC	100.00%
Newsoara Biopharma Co Ltd \| Collaborative Arrangements
Organization Consolidation And Presentation Of Financial Statements [Line Items]
License fee received		$ 20,000	$ 20,000
Parent Company
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Cash and cash equivalents	$ 67,600