BUSINESS COMBINATIONS - Identifiable Intangible Assets, LogLogic (Details) (LogLogic, Inc, USD $) In Thousands, unless otherwise specified	0 Months Ended
	Apr. 10, 2012
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable intangible assets	$ 61,200
Weighted average amortization period	6 years 5 months
Existing Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable intangible assets	32,800
Weighted average amortization period	6 years
Customer contracts
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable intangible assets	3,200
Weighted average amortization period	6 years
Maintenance agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable intangible assets	22,300
Weighted average amortization period	7 years
Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable intangible assets	$ 2,900
Weighted average amortization period	7 years