Acquired Intangible Assets (Calculation Of Acquired Intangibles By Asset Class) (Details) (USD $)	9 Months Ended			12 Months Ended					3 Months Ended	9 Months Ended						3 Months Ended	9 Months Ended
	Mar. 31, 2012	Mar. 31, 2012 Purchase Of Patents [Member] Y		Jun. 30, 2012 Purchase Of Patents [Member]	Nov. 15, 2011 Purchase Of Patents [Member]	Mar. 31, 2012 System Solutions Australia Pty Limited (MessageManager) [Member]	Mar. 31, 2012 Operitel Corporation [Member]	Mar. 31, 2012 Acquisition Of Global 360 [Member]	Mar. 31, 2012 Technology Assets [Member] Y	Mar. 31, 2012 Technology Assets [Member]	Mar. 31, 2012 Technology Assets [Member] Purchase Of Patents [Member]		Mar. 31, 2012 Technology Assets [Member] System Solutions Australia Pty Limited (MessageManager) [Member]	Mar. 31, 2012 Technology Assets [Member] Operitel Corporation [Member]	Mar. 31, 2012 Technology Assets [Member] Acquisition Of Global 360 [Member]	Mar. 31, 2012 Customer Assets [Member] Y	Mar. 31, 2012 Customer Assets [Member]	Mar. 31, 2012 Customer Assets [Member] Purchase Of Patents [Member]		Mar. 31, 2012 Customer Assets [Member] System Solutions Australia Pty Limited (MessageManager) [Member]	Mar. 31, 2012 Customer Assets [Member] Operitel Corporation [Member]	Mar. 31, 2012 Customer Assets [Member] Acquisition Of Global 360 [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Net book value, beginning balance	$ 344,995,000									$ 203,630,000							$ 141,365,000
Acquisition of intangible assets		575,000	[1]			1,766,000	4,601,000	98,700,000			575,000	[1]	580,000	2,761,000	40,600,000			0	[1]	1,186,000	1,840,000	58,100,000
Amortization expense	(103,255,000)									(63,307,000)							(39,948,000)
Adjustments on account of foreign exchange	(128,000)									(83,000)							(45,000)
Net book value, ending balance	347,254,000								184,756,000	184,756,000						162,498,000	162,498,000
Total purchase price to acquire patents					600,000
Initial payment under purchase agreement to acquire patents					200,000
Payment under purchase agreement to acquire patents, after 18 months of purchase				200,000
Payment under purchase agreement to acquire patents, two years from date of purchase				$ 200,000
Weighted-average amortization period (in years) for acquired intangible assets		11							5							7
Period following purchase date and final payment					18 months
Period of final payment					2 years

[1] On November 15, 2011, we acquired certain patents. The total purchase price was $0.6 million. Payment terms under the agreement required us to pay $0.2 million upon signing the purchase agreement, $0.2 million 18 months following the purchase date and a final payment of $0.2 million two years following the purchase date. The purchase of these patents is considered to be the acquisition of “defensive intangible assets” and has been accounted for under ASC Topic 350-30-25 “General Intangibles Other than Goodwill”, as well as in accordance with ASC Topic 805-50-5 “Acquisition of Assets Rather than a Business”. The patents have an amortization period of approximately 11 years.