Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Beginning balance			$ 289,624
Changes in unrealized gains on available-for-sale securities, net of tax	$ 16	$ (8)	21	$ 13
Foreign currency translation adjustments	115	$ 1,192	(1,473)	$ (3,426)
Ending balance	257,055		257,055
Unrealized Gains (Losses) on Available-for-Sale Securities
Beginning balance			(3)
Changes in unrealized gains on available-for-sale securities, net of tax			21
Ending balance	18		18
Foreign Currency Translation Adjustments
Beginning balance			(12,942)
Foreign currency translation adjustments			(1,473)
Ending balance	(14,415)		(14,415)
Accumulated Other Comprehensive Loss
Beginning balance			(12,945)
Ending balance	$ (14,397)		$ (14,397)

Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 20
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-URI http://asc.fasb.org/extlink&oid=64808268&loc=d3e32211-110900

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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