SIGNIFICANT ACCOUNTING POLICIES - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Accounting Policies [Abstract]
Net income (loss) attributable to RadNet, Inc.'s common stockholders	$ 8,369	$ 7,905	$ (12,636)	$ 10,918
BASIC NET INCOME (LOSS) PER SHARE ATTRIBUTABLE TO RADNET, INC.'S COMMON STOCKHOLDERS
Weighted average number of common shares outstanding during the period (in shares)	59,880,803	56,059,824	59,221,453	55,683,335
Basic net income (loss) per share attributable to RadNet, Inc.'s common stockholders (in dollars per share)	$ 0.14	$ 0.14	$ (0.21)	$ 0.20
DILUTED NET INCOME (LOSS) PER SHARE ATTRIBUTABLE TO RADNET, INC.'S COMMON STOCKHOLDERS
Weighted average number of common shares outstanding during the period (in shares)	59,880,803	56,059,824	59,221,453	55,683,335
Add non-vested restricted stock subject only to service vesting (in shares)	205,413	47,652	0	122,781
Add additional shares issuable upon exercise of stock options and contingently issuable shares (in shares)	830,769	859,072	0	860,174
Weighted average number of common shares used in calculating diluted net income per share (in shares)	60,916,985	56,966,548	59,221,453	56,666,290
Changes in FV associated with contingently issuable shares	$ (934)	$ (468)	$ 0	$ (863)
Net income (loss) attributable to RadNet, Inc's common stockholders for diluted share calculation	$ 7,435	$ 7,437	$ (12,636)	$ 10,055
Diluted net income (loss) per share attributable to RadNet, Inc.'s common stockholders (in dollars per share)	$ 0.12	$ 0.13	$ (0.21)	$ 0.18
Fair value change for contingently issuable shares excluded from the computation of diluted per share amounts as its effect would be antidilutive	$ 0	$ 0	$ 1,696	$ 0
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	644,623	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)	82,775	70,070	759,313	58,491
Contingently issuable shares
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	193,207	0