SIGNIFICANT ACCOUNTING POLICIES (Details - Earnings Per Share) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Accounting Policies [Abstract]
Net income attributable to RadNet, Inc.'s common stockholders	$ 668	$ 16,220	$ 11,585	$ 28,550
BASIC NET INCOME PER SHARE ATTRIBUTABLE TO RADNET, INC.'S COMMON STOCKHOLDERS
Weighted average number of common shares outstanding during the period (in shares)	56,744,419	52,810,644	56,041,017	52,323,360
Basic net income per share attributable to RadNet, Inc.'s common stockholders (in dollars per share)	$ 0.01	$ 0.31	$ 0.21	$ 0.55
Add nonvested restricted stock subject only to service vesting (in shares)	179,268	271,964	141,492	242,523
Add additional shares issuable upon exercise of stock options and contingently issuable shares (in shares)	728,074	735,232	853,908	683,815
Weighted average number of common shares used in calculating diluted net income per share (in shares)	57,651,761	53,817,840	57,036,417	53,249,698
Changes in FV associated with contingently issuable shares	$ 0	$ 0	$ (586)	$ 0
Net income attributable to RadNet, Inc's common stockholders for diluted share calculation	$ 668	$ 0	$ 10,999	$ 0
Diluted net income per share attributable to RadNet, Inc.'s common stockholders (in dollars per share)	$ 0.01	$ 0.30	$ 0.19	$ 0.54
Fair value change for contingently available shares excluded from the computation of diluted per share amounts as its effect would be antidilutive	$ 278	$ 0	$ 0	$ 0
Shares issuable subject to satisfaction of certain contingencies
Nonvested restricted stock subject to service vesting
Shares issuable upon the exercise of stock options and nonvested restricted stock: (in shares)	113,303	0	0	0
Shares issuable upon the exercise of stock options:
Nonvested restricted stock subject to service vesting
Shares issuable upon the exercise of stock options and nonvested restricted stock: (in shares)	84,885	0	67,289	0
Weighted average shares for which the exercise price exceeds average market price of common stock
Nonvested restricted stock subject to service vesting
Shares issuable upon the exercise of stock options and nonvested restricted stock: (in shares)	83,972	0	73,094	0