FAIR VALUES OF ASSETS AND LIABILITIES (Details 2) (Contingent consideration, USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Contingent consideration
Fair value measurements
Hypothetical decrease in discount rate used in calculating fair value (as a percent)	1.00%
Increase in fair value that would have resulted from hypothetical decrease in discount rate	$ 0.20
Hypothetical increase in revenue assumptions used in calculating fair value (as a percent)	1.00%
Increase in fair value that would have resulted from hypothetical increase in rate related to revenue assumptions	$ 0.2