6. INVESTMENT IN JOINT VENTURES (Details-Key financial data) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Key financial data for joint ventures
Current assets - joint ventures	$ 26,189
Noncurrent assets - joint ventures	92,604
Current liabilities - joint ventures	(5,051)
Noncurrent liabilities - joint ventures	(40,743)
Total net assets -joint ventures	72,999
Book value of Radnet joint venture interests	34,513
Cost in excess of book value of acquired joint venture interests	4,970
Total value of Radnet joint venture interests	39,483		$ 33,584
Total book value of other joint venture partner interests	38,486
Net revenue	80,917	$ 56,639
Net income	$ 13,044	$ 9,476

Key financial data for joint ventures

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Net revenue from joint ventures

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Total book value of other joint venture partner interests

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This element represents the aggregate cost of investments accounted for under the equity method of accounting.

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The amount of assets reported by an equity method investment of the entity.

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The amount of current assets reported by an equity method investment of the entity.

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The amount of current liabilities reported by an equity method investment of the entity.

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The amount of liabilities reported by an equity method investment of the entity.

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This item represents the entity's ownership percentage in the investee multiplied by the investee's total equity.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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This element represents the undistributed income (or loss) of equity method investments, net of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporations; such investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities.

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Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership.

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