2. SUMMARY OF ACCOUNTING POLICIES (Details - Key Financial Data on Joint Ventures) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Key financial data for joint ventures
Current assets	$ 28,186	$ 23,636
Noncurrent assets	91,660	49,347
Current liabilities	(15,258)	(9,534)
Noncurrent liabilities	(44,059)	(6,386)
Total net assets	60,529	57,063
Book value of Radnet joint venture interests	28,397	26,791
Cost in excess of book value of acquired joint venture interests	4,970	4,970
Elimination of intercompany profit remaining on Radnet's consolidated balance sheet	217	362
Total value of Radnet joint venture interests	33,584	32,123	$ 28,949
Total book value of other joint venture partner interests	32,132	30,272
Net revenue	125,544	101,189	93,134
Net income	$ 19,485	$ 14,854	$ 13,633