Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2021	Sep. 30, 2020
Beginning Balance	$ 160,970	$ 178,847
Other comprehensive income (loss)	378	(941)
Ending Balance	142,457	160,970
Unrealized Gains (Losses) on Available-for-Sale Securities
Other comprehensive income (loss)	(15)
Ending Balance	(15)
Foreign Currency Translation Adjustments
Beginning Balance	(16,698)	(15,757)
Other comprehensive income (loss)	393	(941)
Ending Balance	(16,305)	(16,698)
Accumulated Other Comprehensive Loss
Beginning Balance	(16,698)	(15,757)
Other comprehensive income (loss)	378	(941)
Ending Balance	$ (16,320)	$ (16,698)

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.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
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-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
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+ Details