ProPhase Labs, Inc. Quarterly report [Sections 13 or 15(d)]

Quarterly report [Sections 13 or 15(d)]

Stockholders??? Equity - Narrative (Details)

Stockholders’ Equity - Narrative (Details) - USD ($)								3 Months Ended		9 Months Ended
Stockholders’ Equity - Narrative (Details) - USD ($)	Sep. 09, 2025	Feb. 17, 2025	Jan. 29, 2025	Jun. 03, 2022	May 19, 2022	May 20, 2021	Apr. 12, 2018	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Sep. 08, 2025	Dec. 31, 2024	Jun. 16, 2023	Jan. 03, 2023	May 09, 2022
Equity, Class of Treasury Stock [Line Items]
Common stock, authorized (in shares)	1,000,000,000							1,000,000,000		1,000,000,000		50,000,000	1,000,000,000
Common stock, par value (in dollars per share)								$ 0.0005		$ 0.0005			$ 0.0005		$ 0.0005
Preferred stock, authorized (in shares)								1,000,000		1,000,000			1,000,000
Preferred stock, par value (in dollars per share)								$ 0.0005		$ 0.0005			$ 0.0005
Preferred stock, issued (in shares)								0		0			0
Dividends, common stock								$ 0	$ 0	$ 0	$ 0
Issuance of common stock as commitment fee for future financing										$ 158,000	0
Stock options granted (in shares)										1,850,000
Fair value of stock options granted										$ 372,000
Share price (in dollars per share)								$ 0.46		$ 0.46
Warrants (in shares)								7,050,000		7,050,000
Share-based compensation expense								$ 400,000	600,000	$ 1,500,000	3,000,000.0
Share-based compensation, nonvested award, cost not yet recognized, amount								3,300,000		$ 3,300,000
Weighted average period (in years)										2 years 10 months 24 days
General and administration								$ 4,635,000	$ 6,573,000	$ 13,351,000	20,805,000
Equivir License Agreement
Equity, Class of Treasury Stock [Line Items]
General and administration										$ 0	$ 100,000
2025 Directors Plan
Equity, Class of Treasury Stock [Line Items]
Number of shares reserved for issuance (in shares)	500,000
Stock options granted (in shares)								0
Number of shares authorized (in shares)								600,000		600,000
2022 Directors Plan
Equity, Class of Treasury Stock [Line Items]
Number of shares reserved for issuance (in shares)					300,000
Stock options granted (in shares)										200,000	210,000
Shares reserved for future issuance (in shares)												100,000
Amended 2022 Directors' Plan
Equity, Class of Treasury Stock [Line Items]
Increase in shares reserved for future issuance (in shares)														150,000
Amended 2010 Directors' Plan
Equity, Class of Treasury Stock [Line Items]
Number of shares authorized (in shares)						775,000
2025 Plan
Equity, Class of Treasury Stock [Line Items]
Number of shares reserved for issuance (in shares)	3,000,000
Stock options granted (in shares)								726,715
Number of shares authorized (in shares)								2,307,035		2,307,035
2022 Plan
Equity, Class of Treasury Stock [Line Items]
Stock options granted (in shares)										423,285	1,080,000
Increase in shares reserved for future issuance (in shares)																1,000,000
Shares reserved for future issuance (in shares)								33,750		33,750
Amended 2010 Plan
Equity, Class of Treasury Stock [Line Items]
Conversion shares (in shares)						4,900,000
2018 Stock Incentive Plan \| CEO Options
Equity, Class of Treasury Stock [Line Items]
Exercise price, lower range (in dollars per share)				$ 0.60
Chief Executive Officer \| 2018 Stock Incentive Plan
Equity, Class of Treasury Stock [Line Items]
Stock options granted (in shares)							2,300,000
Stock issued during period (in shares)							2,300,000
Former Chief Operating Officer \| Inducement Option Award
Equity, Class of Treasury Stock [Line Items]
Stock options granted (in shares)		500,000
Exercise price, lower range (in dollars per share)		$ 0.60
Award expiration period (in years)		7 years
Former Chief Operating Officer \| Inducement Option Award \| Share-Based Payment Arrangement, Tranche One
Equity, Class of Treasury Stock [Line Items]
Options vesting percentage		25.00%
Keystone \| Keystone ELOC Shares
Equity, Class of Treasury Stock [Line Items]
Number of shares of common stock sold (in shares)			7,700,000							11,300,000
Issuance of common stock as commitment fee for future financing (in shares)			352,176
Issuance of common stock as commitment fee for future financing			$ 158,000
Sale of stock, consideration received on transaction										$ 3,600,000
Payments for commissions and expenses										$ 275,000
Sale of stock, price per share (in dollars per share)								$ 0.29		$ 0.29
Keystone \| Keystone ELOC Shares \| Treasury Stock
Equity, Class of Treasury Stock [Line Items]
Number of shares of common stock sold (in shares)										4,200,000