SIGNIFICANT ACCOUNTING POLICIES - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Accounting Policies [Abstract]
NET INCOME (LOSS) ATTRIBUTABLE TO RADNET, INC. COMMON STOCKHOLDERS	$ 3,209	$ 17,540	$ (2,552)	$ 4,904
BASIC NET INCOME (LOSS) PER SHARE ATTRIBUTABLE TO RADNET, INC. COMMON STOCKHOLDERS
Weighted average number of common shares outstanding during the period basic (in shares)	73,494,709	67,793,404	72,587,321	62,113,707
Basic net income (loss) per share attributable to RadNet, Inc.'s common stockholders (in dollars per share)	$ 0.04	$ 0.26	$ (0.04)	$ 0.08
DILUTED NET INCOME (LOSS) PER SHARE ATTRIBUTABLE TO RADNET, INC. COMMON STOCKHOLDERS
Weighted average number of common shares outstanding during the period basic (in shares)	73,494,709	67,793,404	72,587,321	62,113,707
Add non-vested restricted stock subject only to service vesting (in shares)	233,235	217,238	0	202,082
Add additional shares issuable upon exercise of stock options and contingently issuable shares (in shares)	1,437,491	799,176	0	905,462
Weighted average number of common shares used in calculating diluted net income per share (in shares)	75,165,435	68,809,818	72,587,321	63,221,251
Diluted net income (loss) income per share attributable to RadNet, Inc.'s common stockholders (in dollars per share)	$ 0.04	$ 0.25	$ (0.04)	$ 0.08
Non-vested restricted stock subject to service vesting
Stock options and non-vested restricted awards excluded from the computation of diluted per share amounts as their effect would be antidilutive:
Weighted average shares for which the exercise price exceeds average market price of common stock (in shares)	0	0	680,318	0
Shares issuable upon the exercise of stock options
Stock options and non-vested restricted awards excluded from the computation of diluted per share amounts as their effect would be antidilutive:
Weighted average shares for which the exercise price exceeds average market price of common stock (in shares)	0	88,600	820,932	761,708
Shares issuable subject to satisfaction of certain contingencies
Stock options and non-vested restricted awards excluded from the computation of diluted per share amounts as their effect would be antidilutive:
Weighted average shares for which the exercise price exceeds average market price of common stock (in shares)	0	0	0	193,207
Weighted average shares for which the exercise price exceeds average market price of common stock
Stock options and non-vested restricted awards excluded from the computation of diluted per share amounts as their effect would be antidilutive:
Weighted average shares for which the exercise price exceeds average market price of common stock (in shares)	0	0	0	94,346