Fair Value Of Financial Instruments And Equity-Accounted Investments (Interest In Equity-Accounted Investments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	Dec. 31, 2011	Dec. 31, 2011
Derivatives, Fair Value [Line Items]
Beginning balance		$ 1,860
Loan repaid		(65)
Interest repaid		(70)
Earnings (loss) from equity-accounted investments	19	104
Foreign currency adjustment		(284)	[1]
Ending Balance	1,545	1,545
SmartSwitch Namibia [Member]
Derivatives, Fair Value [Line Items]
Earnings (loss) from equity-accounted investments	67	131	[2]
SmartSwitch Botswana [Member]
Derivatives, Fair Value [Line Items]
Earnings (loss) from equity-accounted investments	(48)	(27)	[2]
Equity [Member]
Derivatives, Fair Value [Line Items]
Beginning balance		4,051
Foreign currency adjustment		(478)	[1]
Ending Balance	3,573	3,573
Loans [Member]
Derivatives, Fair Value [Line Items]
Beginning balance		1,630
Loan repaid		(65)
Foreign currency adjustment		(88)	[1]
Ending Balance	1,477	1,477
Earnings (Loss) [Member]
Derivatives, Fair Value [Line Items]
Beginning balance		(3,828)
Earnings (loss) from equity-accounted investments	6	65
Foreign currency adjustment		225	[1]
Ending Balance	(3,538)	(3,538)
Earnings (Loss) [Member] | SmartSwitch Namibia [Member]
Derivatives, Fair Value [Line Items]
Earnings (loss) from equity-accounted investments	58	113	[2]
Earnings (Loss) [Member] | SmartSwitch Botswana [Member]
Derivatives, Fair Value [Line Items]
Earnings (loss) from equity-accounted investments	(52)	(48)	[2]
Corporate/Elimination [Member]
Derivatives, Fair Value [Line Items]
Beginning balance		7
Interest repaid		(70)
Earnings (loss) from equity-accounted investments	13	39
Foreign currency adjustment		57	[1]
Ending Balance	33	33
Corporate/Elimination [Member] | SmartSwitch Namibia [Member]
Derivatives, Fair Value [Line Items]
Earnings (loss) from equity-accounted investments	9	18	[2]
Corporate/Elimination [Member] | SmartSwitch Botswana [Member]
Derivatives, Fair Value [Line Items]
Earnings (loss) from equity-accounted investments	$ 4	$ 21	[2]

[1] - the foreign currency adjustment represents the effects of the combined net currency fluctuations between the functional currency of the equity-accounted investments and the US dollar.

[2] - includes the recognition of realized net income.