v3.26.1

Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2026	Dec. 31, 2025
Class of Stock [Line Items]
Common stock, authorized	150,000,000	150,000,000
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, issued	18,830,436	18,738,249
Common stock, outstanding	18,830,436	18,738,249
ATM
Class of Stock [Line Items]
Sale of stock issue price per share	$ 32.19
Aggregate consideration	$ 1.4
Sale of Stock, Consideration Received after deducting expenses, Net	1.3
Proceeds from the issuance of common stock	$ 100.0
Shares issued under securities purchase agreement	43,000
Common Stock [Member]
Class of Stock [Line Items]
Common stock, authorized	150,000,000
Common stock, par value	$ 0.0001

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Tectonic Therapeutic, Inc. 10-Q