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SIGNIFICANT ACCOUNTING POLICIES - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Accounting Policies [Abstract] |  |  |  |
Net income attributable to RadNet, Inc.'s common stockholders | $ 17,540 | $ 668 | $ 4,904 | $ 11,585
BASIC NET INCOME PER SHARE ATTRIBUTABLE TO RADNET, INC.'S COMMON STOCKHOLDERS |  |  |  |
Weighted average number of common shares outstanding during the period (in shares) | 67,793,404 | 56,744,419 | 62,113,707 | 56,041,017
Basic net income per share attributable to RadNet, Inc.'s common stockholders (in dollars per share) | $ 0.26 | $ 0.01 | $ 0.08 | $ 0.21
DILUTED NET INCOME PER SHARE ATTRIBUTABLE TO RADNET, INC.'S COMMON STOCKHOLDERS |  |  |  |
Weighted average number of common shares outstanding during the period (in shares) | 67,793,404 | 56,744,419 | 62,113,707 | 56,041,017
Add non-vested restricted stock subject only to service vesting (in shares) | 217,238 | 179,268 | 202,082 | 141,492
Add additional shares issuable upon exercise of stock options and contingently issuable shares (in shares) | 799,176 | 728,074 | 905,462 | 853,908
Weighted average number of common shares used in calculating diluted net income per share (in shares) | 68,809,818 | 57,651,761 | 63,221,251 | 57,036,417
Changes in FV associated with contingently issuable shares | $ 0 | $ 0 | $ 0 | $ (586)
Net income attributable to RadNet, Inc's common stockholders for diluted share calculation | $ 17,540 | $ 668 | $ 4,904 | $ 10,999
Diluted net income per share attributable to RadNet, Inc.'s common stockholders (in dollars per share) | $ 0.25 | $ 0.01 | $ 0.08 | $ 0.19
Earnings per share disclosures: |  |  |  |
Fair value change for contingently issuable shares excluded from the computation of diluted per share amounts as its effect would be antidilutive | $ 0 | $ 278 | $ 0 | $ 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 | 0 | 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) | 88,600 | 84,885 | 761,708 | 67,289
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 | 113,303 | 0 | 0
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 | 83,972 | 94,346 | 73,094
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

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