Significant Accounting Policies (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Sep. 30, 2019
Acquired Indefinite-lived Intangible Assets [Line Items]
Goodwill	$ 52,758,000		$ 52,758,000		$ 52,758,000
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
Treasury stock (in shares)	0		0
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