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Stock Award Plans - Nonvested Stock Options (Details) - $ / shares	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Options Outstanding
Outstanding at beginning of period (in shares)	0	0	0
Vested (in shares)	0	0	0
Forfeited (in shares)	(63,176)	0	0
Outstanding at end of period (in shares)	293,167	0	0
Weighted Average Grant Date Fair Value
Outstanding at beginning of period (in dollars per share)	$ 0	$ 0	$ 0
Granted (in dollars per share)	5.21	3.15	3.06
Vested (in dollars per share)	0	0	0
Forfeited (in dollars per share)	5.33	0	0
Outstanding at end of period (in dollars per share)	$ 5.33	$ 0	$ 0
Non-vested Stock Options
Options Outstanding
Granted (in shares)	356,343	0	0
Weighted Average Grant Date Fair Value
Granted (in dollars per share)	$ 5.33	$ 0	$ 0

X

- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

+ Details

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

Number of non-vested options outstanding.

+ References

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- Definition

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

+ References

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- Definition

Number of non-vested options forfeited.

+ References

No definition available.

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- Definition

Weighted average grant-date fair value of non-vested options forfeited.

+ References

No definition available.

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- Definition

Weighted average grant-date fair value of non-vested options outstanding.

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- Definition

Number of options vested.

+ References

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- Definition

Weighted average grant-date fair value of options vested.

+ References

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