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Share Based Compensation - Share Options (Narratives) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award
Granted (shares)	1,513,218	570,537
Forfeited (shares)	18,046	228
Share based compensation expense	$ 6,765	$ 3,153	$ 2,257
Non-employee compensation expense	$ 100
Stock options
Share-based Compensation Arrangement by Share-based Payment Award
Weighted average grant date fair value (usd per share)	$ 8.55	$ 4.04
Granted (shares)			0
Stock options - performance based
Share-based Compensation Arrangement by Share-based Payment Award
Granted (shares)	0	556,966
Forfeited (shares)		228
Share based compensation expense	$ 1,000	$ 400
Unrecognized stock based compensation	$ 600

X

- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

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- Definition

Fair value of share-based compensation granted to nonemployees as payment for services rendered or acknowledged claims.

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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.

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

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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.

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