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Commitments (Details 3) - 2015 Omnibus Incentive Plan [Member] - $ / 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 at beginning	5,092,030	4,199,000	1,822,500
Granted	1,730,000	1,107,500	2,401,500
Expired			(25,000)
Forfeited	(164,280)	(214,470)
Exercised	(150,833)
Outstanding at ending	6,506,917	5,092,030	4,199,000
Exercisable at ending	4,108,028	3,326,223
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding at beginning	$ 4.13	$ 3.76	$ 2.00
Granted	2.71	5.51	5.22
Expired			14.68
Forfeited	3.66	4.09
Exercised	1.18
Outstanding at ending	3.83	4.13	3.76
Exercisable at ending	3.75	3.10
Share-based Compensation Arrangement by Share-based Payment Award, Options, Weighted Average Grant Date Fair Value [Roll Forward]
Granted	$ 2.09	$ 5.44	$ 4.38

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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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.

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

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

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