Supporting Financial Information - Equipment and Improvements, net (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Jun. 30, 2017	Sep. 30, 2016
Property, Plant and Equipment [Line Items]
Document Fiscal Year Focus	2017
Furniture and equipment	$ 243	$ 638
Computer equipment	843	202
Computer software	1,239	309
Leasehold improvements	85	38
Property, Plant and Equipment, Gross	2,410	1,187
Less accumulated depreciation and amortization	(1,247)	(543)
Equipment and improvements, net	1,163	644
Depreciation	$ 200	$ 200
Minimum | Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Maximum | Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	7 years