Stockholders' Equity Stock Opt Rollforward (Details) - $ / shares	12 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016
Share Based Compensation Arrangement by Share Based Payment Award, Options, Outstanding Roll Forward
Outstanding (Shares)	45,750	79,500	133,000
Options granted (Shares)	0	0	0
Options exercised, shares	1,500	33,750	42,500
Forfeited and Cancelled (Shares)		0	11,000
Outstanding (Shares)	44,250	45,750	79,500
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price Rollforward [Abstract]
Outstanding (Weighted Average Price)	$ 6.42	$ 6.43	$ 5.79
Options granted (Weighted Average Price)	0	0	0
Exercised (Weighted Average Price)	7.21	6.46	5.17
Forfeited and Cancelled (Weighted Average Price)	0	0	3.6
Outstanding (Weighted Average Price)	$ 6.39	$ 6.42	$ 6.43

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

For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)-(4)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

Weighted average price of options that were either forfeited or expired.

+ References

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- Definition

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

+ References

No definition available.

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Topic 718
-SubTopic 10
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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.

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

+ References

No definition available.

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

+ References

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Number of share options (or share units) exercised during the current period.

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-Publisher FASB
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