SUMMARY OF ACCOUNTING POLICIES (Details - Earnings Per Share) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Accounting Policies [Abstract]
Net loss (income) attributable to RadNet, Inc.'s common stockholders	$ (10,594)	$ 4,899	$ (26,952)	$ 1,165
BASIC AND DILUTED NET (LOSS) INCOME PER SHARE ATTRIBUTABLE TO RADNET, INC.'S COMMON STOCKHOLDERS
Weighted average number of common shares outstanding during the period (in shares)	50,672,219	49,702,869	50,483,274	49,490,234
Basic and diluted net loss (income) per share attributable to RadNet, Inc.'s common stockholders (in dollars per share)	$ (0.21)	$ 0.10	$ (0.53)	$ 0.02
Nonvested restricted stock subject only to service vesting (in shares)	0	134,260	0	186,779
Additional shares issuable upon exercise of stock options and warrants (in shares)	0	307,411	0	311,023
Weighted average number of common shares used in calculating diluted net income per share (in shares)	50,672,219	50,144,540	50,483,274	49,988,036
Diluted net income per share attributable to RadNet, Inc.'s common stockholders (in dollars per share)	$ (0.21)	$ 0.10	$ (0.53)	$ 0.02