BUSINESS COMBINATIONS - Identifiable Intangible Assets, StreamBase Systerms Inc. (Details) (StreamBase Systems, USD $) In Thousands, unless otherwise specified	0 Months Ended
	Jun. 03, 2013
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Amount at Acquisition Date	$ 19,600
Weighted average amortization period	7 years
Existing technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Amount at Acquisition Date	12,300
Weighted average amortization period	7 years
Customer base
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Amount at Acquisition Date	3,700
Weighted average amortization period	7 years
Maintenance agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Amount at Acquisition Date	$ 3,600
Weighted average amortization period	7 years