NOTE 2 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 4) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Investment in joint ventures
Investment in joint ventures at December 31, 2011	$ 28,598	$ 22,326
Fair value of remaining interest in de-consolidated joint venture (see Note 2)	1,936
Initial investment in joint venture imaging center located in Cedar Knolls, New Jersey (see Note 2)	1,836
Additional investment in an existing joint venture imaging center	920
Final purchase accounting adjustment to the fair value of joint venture interests acquired with our acquisition of Raven Holdings (see Note 2)	933
Lenox Hill Radiology	648
Equity in earnings of joint ventures for the nine months ended December 31, 2012	6,476
Distributions from joint ventures received during the nine months ended December 31, 2012	(6,477)
Investment in joint ventures at December 31, 2012	$ 28,598	$ 22,326