Convertible Preferred Stock and Stockholders’ Equity - Part 1 (Details) - USD ($) $ / shares in Units, $ in Millions	Sep. 30, 2025	Sep. 22, 2025	Dec. 31, 2024	Sep. 24, 2024	Oct. 03, 2023	Sep. 29, 2023
Convertible Preferred Stock and Stockholders Equity [Line Items]
Common stock, shares authorized	250,000,000		250,000,000
Par value of common stock (in Dollars per share)	$ 0.00001		$ 0.00001
Conversion of preferred stock				3,000
Veru, Inc [Member]
Convertible Preferred Stock and Stockholders Equity [Line Items]
Notes payable (in Dollars)					$ 3.0
Series Seed Preferred Stock [Member]
Convertible Preferred Stock and Stockholders Equity [Line Items]
Preferred stock, shares authorized	1,150,000		1,150,000
Preferred shares outstanding
Series A Preferred Stock [Member]
Convertible Preferred Stock and Stockholders Equity [Line Items]
Preferred stock, shares authorized	10,000		10,000
Series B Preferred Stock [Member]
Convertible Preferred Stock and Stockholders Equity [Line Items]
Preferred stock, shares authorized	2,700,000		2,700,000
Series C Preferred Stock [Member]
Convertible Preferred Stock and Stockholders Equity [Line Items]
Preferred stock, shares authorized	10,000		10,000
Series D Preferred Stock [Member]
Convertible Preferred Stock and Stockholders Equity [Line Items]
Preferred stock, shares authorized	32,000		0
Par value of preferred stock (in Dollars per share)	$ 0.00001		$ 0.00001
Preferred shares outstanding	16,325		0
Preferred stock, share issued	16,325	500	0
Series A Convertible Preferred Stock [Member]
Convertible Preferred Stock and Stockholders Equity [Line Items]
Preferred shares outstanding	0		0
Preferred Stock [Member]
Convertible Preferred Stock and Stockholders Equity [Line Items]
Preferred stock, shares authorized	10,000,000		10,000,000
Par value of preferred stock (in Dollars per share)	$ 0.00001		$ 0.00001
Preferred Stock [Member] \| Series Seed Preferred Stock [Member]
Convertible Preferred Stock and Stockholders Equity [Line Items]
Preferred stock, shares authorized	1,150,000		1,150,000
Preferred Stock [Member] \| Series B Preferred Stock [Member]
Convertible Preferred Stock and Stockholders Equity [Line Items]
Conversion of preferred stock				2,696,729
Preferred Stock [Member] \| Series D Preferred Stock [Member]
Convertible Preferred Stock and Stockholders Equity [Line Items]
Preferred shares outstanding	16,325
Preferred stock, share issued	16,343
Preferred Stock [Member] \| Series A Convertible Preferred Stock [Member]
Convertible Preferred Stock and Stockholders Equity [Line Items]
Preferred stock, shares authorized						10,000
Preferred stock, share issued					3,000
Conversion of preferred stock				1,679

Onconetix, Inc. 10-Q