Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2015	Mar. 10, 2016	Jun. 30, 2015
NonPlanOutstandingWarrantsMember
Entity Registrant Name	RadNet, Inc.
Entity Central Index Key	0000790526
Document Type	10-K
Document Period End Date	Dec. 31, 2015
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Is Entity a Well-known Seasoned Issuer	No
Is Entity a Voluntary Filer	No
Is Entity's Reporting Status Current	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		47,193,286
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2015
Entity Public Float			$ 266,105,775