Significant Accounting Policies - Goodwill, Income Taxes, and Cash and Cash Equivalents (Details) - USD ($)	3 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Sep. 30, 2015
Accounting Policies [Abstract]
Amortization of Intangible Assets	$ 324,000
Goodwill and other intangible assets, net			$ 35,000,000
Cash, FDIC Insured Amount		$ 250,000