Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	May 14, 2018
Document And Entity Information [Abstract]
Entity Registrant Name	ProPhase Labs, Inc.
Entity Central Index Key	0000868278
Document Type	10-Q
Document Period End Date	Mar. 31, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		11,129,892
Trading Symbol	PRPH
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2018