Organization and Summary of Significant Accounting Policies - Intangible Assets (Details) - USD ($) $ in Thousands		12 Months Ended
	Jun. 30, 2019	Jun. 30, 2020	Sep. 30, 2019
Core Deposit Intangible Assets Amortization Period		five to seven years
Mortgage Servicing Rights	$ 1,400	$ 1,100
Finite-Lived Intangible Assets, Amortization Expense, after Year Five		328
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months		1,400
Finite-Lived Intangible Assets, Amortization Expense, Year Five		807
Finite-Lived Intangible Assets, Amortization Expense, Year Four		1,400
Finite-Lived Intangible Assets, Amortization Expense, Year Three		1,400
Finite-Lived Intangible Assets, Amortization Expense, Year Two		$ 1,400
Finite-Lived Intangible Assets, Amortization Method		using the straight line method
Gross Core Deposit Intangibles	14,700	$ 15,300
Gross Core Deposit Intangibles Accumulated Amortization	6,900	8,700
Gross Other Identifiable Intangibles	3,800	3,800
Gross Other Identifiable Intangibles Accumulated Amortization	$ 3,800	$ 3,800
Accounts payable and other liabilities
Operating Lease, Liability			$ 2,000