Income Taxes - Reconciliation of the changes in the amount of unrecognized tax benefits (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2019	Sep. 30, 2018
Reconciliation of the changes in the amount of unrecognized tax benefits
Balance at beginning of the fiscal year	$ 1,368	$ 1,467
Decreases related to prior year tax positions	(4)	(3)
Increases related to current year tax positions	954	309
Lapse of statute	(318)	(405)
Balance at end of fiscal year	2,000	1,368
Total unrecognized tax benefits of accrued interest and penalties	$ 200	$ 200

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount of unrecognized tax benefits.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
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- Definition

Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

+ References

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

+ References

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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