Derivative Instruments and Hedging Activities (Accumulated Other Comprehensive Income) (Details) (USD $) In Thousands	3 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 12	$ (1,995)
Amount reclassified to income	223	935
Net change	(1,194)	414
Ending balance	(959)	(646)
Accumulated OCI | Derivatives Designated as Hedging Instruments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Net change	(1,194)	414
Revenues | Derivatives Designated as Hedging Instruments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Amount reclassified to income	284	793
Costs of revenues | Derivatives Designated as Hedging Instruments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Amount reclassified to income	(61)	142
Derivatives Designated as Hedging Instruments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Amount reclassified to income	$ 223	$ 935