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2. SUMMARY OF ACCOUNTING POLICIES (Details - Key Financial Data on Joint Ventures) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Key financial data for joint ventures
Current assets	$ 45,486		$ 47,813
Noncurrent assets	107,001		107,481
Current liabilities	(16,162)		(16,655)
Noncurrent liabilities	(39,836)		(42,072)
Total net assets	96,489		96,567
Book value of RadNet joint venture interests	46,091		45,935
Cost in excess of book value of acquired joint venture interests	6,500		6,500
Total value of RadNet joint venture interests	52,591		52,435
Total book value of other joint venture partner interests	50,398		$ 50,632
Net revenue	44,546	$ 41,251
Net income	$ 6,250	$ 4,130

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