Segment and Geographic Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Jun. 30, 2013 segment
Segment and Geographic Information
Number of operating segments			3
Number of reportable segments			3
Summary of operating segments
Segment revenue	$ 87,565	$ 71,457
Segment profit	24,849	8,954
Reconciliation to Income Before Income Taxes
General and administrative	(11,876)	(12,768)
Restructuring charges	3	(40)
Other income (expense), net	(804)	(277)
Interest income (net)	369	842
Income before provision for income taxes	24,414	9,519
Operating segments
Summary of operating segments
Segment expenses	(50,843)	(49,695)
Segment profit	36,722	21,762
Subscription and Software
Summary of operating segments
Segment revenue	78,683	63,763
Subscription and Software \| Operating segments
Summary of operating segments
Segment expenses	(43,385)	(42,485)
Segment profit	35,298	21,278
Services
Summary of operating segments
Segment revenue	8,882	7,694
Services \| Operating segments
Summary of operating segments
Segment expenses	(7,458)	(7,210)
Segment profit	$ 1,424	$ 484

Total costs of sales and operating expenses for the period.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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