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Capitalized software (Details) (USD $) In Thousands	Jun. 30, 2011	Sep. 30, 2010
Software development costs
Capitalized software development costs	$ 40,390	$ 35,648
Less: Accumulated amortization	(12,801)	(10,933)
Total Software development costs, net	$ 27,589	$ 24,715

For each balance sheet presented, the amount of accumulated amortization for capitalized computer software costs.

The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date.