Significant Accounting Policies (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2018
Acquired Indefinite-lived Intangible Assets [Line Items]
Amortization on the basis of estimated assets acquired	$ 600,000	$ 400,000	$ 1,500,000	$ 1,300,000
Goodwill	51,777,000		51,777,000		$ 25,989,000
Goodwill impairment					0
Uncertain tax positions	0		0		$ 0
Income tax interest expense	0	0	0	0
Income tax penalties expense	0	$ 0	0	$ 0
Cash, FDIC insured amount	250,000		250,000
Restricted cash	$ 2,300,000		$ 2,300,000
Employee Stock Option
Acquired Indefinite-lived Intangible Assets [Line Items]
Number of awards authorized for issuance (in shares)	0		0
Expiration term of share-based compensation plan			10 years
Minimum
Acquired Indefinite-lived Intangible Assets [Line Items]
Estimated useful of long-lived assets			3 years
Maximum
Acquired Indefinite-lived Intangible Assets [Line Items]
Estimated useful of long-lived assets			7 years
SSS
Acquired Indefinite-lived Intangible Assets [Line Items]
Amortization on the basis of estimated assets acquired	$ 200,000
Goodwill	$ 25,788,000		$ 25,788,000