Merger - Additional Information (Detail) $ / shares in Units, $ in Thousands									1 Months Ended	3 Months Ended			6 Months Ended
	Apr. 11, 2024 $ / shares shares	Mar. 31, 2024 $ / shares shares	Mar. 28, 2024 USD ($) shares	Mar. 27, 2024 USD ($) shares	Mar. 25, 2024 $ / shares shares	Feb. 27, 2024 USD ($)	Feb. 09, 2024 USD ($) shares	Dec. 19, 2023 USD ($) shares	Mar. 31, 2024 USD ($) $ / shares shares	Jun. 30, 2024 USD ($) Directors $ / shares shares	Mar. 31, 2024 USD ($) $ / shares shares	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) Directors $ / shares shares	Jun. 30, 2023 USD ($)	May 15, 2024 USD ($)	Mar. 20, 2024 USD ($)	Dec. 31, 2023 USD ($) $ / shares shares	Sep. 13, 2023 USD ($)	Jul. 04, 2023 USD ($)	Jun. 13, 2023 USD ($)	Dec. 31, 2022 $ / shares
Merger [Line Items]
Stock issued during the period shares restructuring | shares			17,696,425
Class of warrant or right, Number of securities called by warrants or rights | shares										3,016,409			3,016,409
Stockholders equity stock split ratio		0.9141
Percentage of aggregate shares held by the existing shareholders										63.00%			63.00%
Number of directors | Directors										7			7
Number of independent directors | Directors										1			1
Payments for merger related costs			$ 7,058				$ 150
Common stock shares outstanding | shares										35,255,013			35,255,013				4,678,950
Accured professional fees payable current										$ 3,709			$ 3,709				$ 1,377
Stock issued during the period shares for services | shares							33,333
Other commitment										6,138			6,138
Third party payment													226
Stock issued during period, shares, conversion of units | shares				3,333
Reduction in additional paid in capital in the account of capital market advisory							$ 450
General and administrative										4,307		$ 1,299	6,489	$ 2,768
Cash payment to third party						$ 1,800
Payment of date						of $113 commencing on the earlier of May 31, 2024
Payment of condition amount						$ 300
Voluntarily payment to third party						1,500
Payment for consummation of a financing transaction						1,800
Proceeds from Consummation of a Financing Transaction						15,000
Merger recognized as transaction cost						1,800
Liabilities							8,159			38,143			38,143				18,293
Accounts payable							223
Accrued liabilities and other liabilities							1,987
Deferred legal fees							3,330			$ 2,953			$ 2,953				$ 0
Common stock par or stated value per share | $ / shares										$ 0.0001			$ 0.0001				$ 0.0001				$ 0.0001
Common stock shares issued | shares										35,255,013			35,255,013				4,678,950
General and Administrative Expense [Member]
Merger [Line Items]
General and administrative							150
Capital Support Agreement [Member]
Merger [Line Items]
Amount pay to the third party for capital market agreement							$ 300
Capital Market Advisory Agreement With Additional Third Party [Member]
Merger [Line Items]
Other commitment																		$ 1,250
Debt instrument face value																$ 1,000
Fees payable monthly instalment															$ 42	$ 250
Third party payment													$ 84
Post Initial Business Combination [Member] | Capital Market Advisory Agreement With Additional Third Party [Member]
Merger [Line Items]
Other commitment																			$ 1,000
Closing of the Initial Business Combination [Member] | Capital Market Advisory Agreement With Additional Third Party [Member]
Merger [Line Items]
Other commitment																			500
Post Business Combination Event [Member] | Capital Market Advisory Agreement With Additional Third Party [Member]
Merger [Line Items]
Other commitment																			$ 1,000
OTC Equity Prepaid Forward Transaction With Sandia Investment Management LP [Member]
Merger [Line Items]
Stock issued during the period shares new issues | shares		500,000			500,000
Open market purchase of shares by an investee | shares		1,000,000			1,000,000								1,500,000
Sale of stock issue price per share | $ / shares					$ 10.99
Prepayment per share on recycled shares | $ / shares					10.99
Prepayment per share | $ / shares					$ 10.99
Lincoln Park Purchase Agreement [Member] | Lincoln Park Capital Fund LIC [Member]
Merger [Line Items]
Common stock shares outstanding | shares								75,000
Amount of commitment fee								$ 1,688
Amount of commitment fee in shares								563
Remaining amount of commitment fee in cash								$ 1,125
Accelerated share repurchases, initial price paid per share | $ / shares	$ 2.37
Stock issued during the period shares for services | shares	712,025												5,419,287
Stock issued during period, value, issued for services													$ 5,300
Marketing Services Agreement [Member]
Merger [Line Items]
Stock issued during the period shares new issues | shares							30,706
Stock issued during period, value, issued for services							$ 300
Advisory Agreements [Member]
Merger [Line Items]
Non Refundable Cash Fee Payable Over The Term To Related Party				$ 113
Obligation to third party as accrued expenses and current liabilities										$ 1,575			$ 1,575
Advisory fees paid						$ 1,800
Placement Agent Agreement [Member]
Merger [Line Items]
Retain of an additional third party raising amount									$ 10,000
Execution of the placement agent agreement term									60 days
Percentage of cash fee received from investor									7.00%
Receipts of proceeds from investor for business days									7 days
Cash Payment In Relation To Financing Proceeds											$ 123
Common stock shares issued | shares		11,666							11,666		11,666
Common Stock [Member]
Merger [Line Items]
Stock issued during the period shares new issues | shares											42,372
Common Stock [Member] | Placement Agent Agreement [Member]
Merger [Line Items]
Percentage of common stock issued									3.00%
Common stock par or stated value per share | $ / shares		$ 4.5							$ 4.5		$ 4.5
Common Class B [Member]
Merger [Line Items]
Common stock shares unvested and subject to forfeiture | shares										1,129,630			1,129,630
Related Party [Member]
Merger [Line Items]
Notes payable							$ 2,619
Sponsor Co Investor And Certain Directors [Member] | Common Class B [Member]
Merger [Line Items]
Common stock shares outstanding | shares										5,750,000			5,750,000
Common stock shares outstanding and subject to forfeiture | shares										1,423,500			1,423,500
Senior Notes [Member]
Merger [Line Items]
Debt conversion, converted instrument, shares issued | shares			3,257,876
Debt instrument, convertible, conversion price | $ / shares										$ 4.5			$ 4.5
Secured debt										$ 2,081			$ 2,081
Debt instrument face value				$ 150																$ 20,000
Senior Notes [Member] | Related Party [Member]
Merger [Line Items]
Debt conversion, converted instrument, shares issued | shares			856,202
Legacy Zapata [Member]
Merger [Line Items]
Number of directors | Directors										6			6
Andretti Acquisition Corp [Member]
Merger [Line Items]
Number of directors | Directors										1			1
Reverse Recapitalization [Member]
Merger [Line Items]
Stock issued during the period shares new issues | shares													7,596,206
Reverse Recapitalization [Member] | Common Stock [Member]
Merger [Line Items]
Stock issued during the period shares new issues | shares											7,596,206