Mortgage Loan Servicing and Loans Originated for Sale (Loans Held for Sale) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale, at fair value	$ 0	$ 96,298
Fixed rate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale, at fair value	0	94,730
Adjustable rate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale, at fair value	$ 0	$ 1,568