2. SUMMARY OF ACCOUNTING POLICIES (Details - Earnings Per Share) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Share [Abstract]
Net income attributable to Radnet, Inc. common stockholders	$ 5,310	$ 3,622	$ 4,100	$ 2,225
BASIC NET INCOME PER SHARE ATTRIBUTABLE TO RADNET, INC. COMMON STOCKHOLDERS
Weighted average shares outstanding - Basic	46,756,276	46,558,944	46,662,420	46,576,631
Basic net income per share attributable to Radnet, Inc. common stockholders	$ 0.11	$ 0.08	$ 0.09	$ 0.05
DILUTED NET INCOME PER SHARE ATTRIBUTABLE TO RADNET, INC.'S COMMON STOCKHOLDERS
Weighted average shares outstanding during the period - Basic	46,756,276	46,558,944	46,662,420	46,576,631
Add nonvested restricted stock subject only to service vesting	250,153	77,162	198,477	155,447
Add additional shares issuable upon exercise of stock options and warrants	189,469	246,277	207,666	228,148
Weighted average shares outstanding - Diluted	47,195,898	46,882,383	47,068,563	46,960,226
Diluted net income per share attributable to RadNet, Inc.'s common stockholders	$ 0.11	$ 0.08	$ 0.09	$ 0.05
Stock options excluded from the computation of diluted per share amounts:
Weighted average shares for which the exercise price exceeds average market price of common stock	165,000	325,626	337,575	325,626