v3.26.1

Organization - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		12 Months Ended
	Jan. 19, 2024	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025	Jul. 11, 2024	Oct. 27, 2023	Apr. 27, 2023
Subsidiary Sale Of Stock [Line Items]
Common stock, par value		$ 0.0001		$ 0.0001
Warrants to purchase shares of common stock					285,715	319,150	270,270
Accumulated deficit		$ 835,078		$ 736,539
Cash, cash equivalents and marketable securities		$ 972,900
At-the-market Offering \| Common Stock
Subsidiary Sale Of Stock [Line Items]
Issuance of common stock, net of issuance costs, shares			984,000
At-the-market Offering \| Jefferies LLC \| Common Stock \| Maximum
Subsidiary Sale Of Stock [Line Items]
Sale of common stock aggregate offering price	$ 350,000
At-the-market Offering \| Jefferies LLC \| January 2024 Sales Agreement \| Common Stock
Subsidiary Sale Of Stock [Line Items]
Issuance of common stock, net of issuance costs, shares		0		984,000
Proceeds from issuance of common stock, net of issuance costs				$ 25,000
Weighted average sales price				$ 26
Common stock remained available to be sold		$ 156,600

Cash cash equivalents and marketable securities.

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Face amount or stated value per share of common stock.

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IDEAYA Biosciences, Inc. 10-Q