SUMMARY OF ACCOUNTING POLICIES (Details - Earnings Per Share) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Accounting Policies [Abstract]
Net loss attributable to RadNet, Inc.'s common stockholders	$ (3,733)	$ (7,338)
BASIC AND DILUTED NET LOSS PER SHARE ATTRIBUTABLE TO RADNET, INC.'S COMMON STOCKHOLDERS
Weighted average number of common shares outstanding during the period (in shares)	49,553,694	47,822,618
Basic and diluted net loss per share attributable to RadNet, Inc.'s common stockholders (in dollars per share)	$ (0.08)	$ (0.15)