SUBSEQUENT EVENT Subsequent Events (Details) (Subsequent Event, USD $)		1 Months Ended
	Jun. 03, 2013 StreamBase Systems	Jun. 30, 2013 Minimum	Jun. 30, 2013 Maximum
Subsequent Event [Line Items]
Total purchase price	$ 52,000,000
Estimated restructuring costs		$ 8,000,000	$ 10,000,000