Significant Accounting Policies (Details) - USD ($)	12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Goodwill [Line Items]
Goodwill	$ 25,989,000	$ 25,989,000
Goodwill impairment loss	0	0
Uncertain tax positions	0	0
Tax interest	0	0
Tax penalties	0	$ 0
FDIC insurance limit amount	$ 250,000
Employee Stock Option
Goodwill [Line Items]
Number of options that may be granted with a term of more than 10 years from date of grant (in shares)	0
Expiration term of options	10 years
Leasehold Improvements | Minimum
Goodwill [Line Items]
Estimated useful lives of property and equipment	3 years
Leasehold Improvements | Maximum
Goodwill [Line Items]
Estimated useful lives of property and equipment	7 years