Loans Held For Investment: Schedule of Loans Held for Investment Contractually Repricing (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Fixed Rate	$ 13,935
Total loans held for investment, gross	881,338	$ 904,492
Mortgage loans, Single-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Fixed Rate	12,116
Total loans held for investment, gross	324,952	314,808
Mortgage loans, Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Fixed Rate	188
Total loans held for investment, gross	439,041	476,008
Mortgage loans, Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Fixed Rate	449
Total loans held for investment, gross	111,928	109,726
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Fixed Rate	659
Total loans held for investment, gross	4,638	3,174
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Fixed Rate	167
Total loans held for investment, gross	167	167
Commercial business loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Fixed Rate	356
Total loans held for investment, gross	478	500
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Fixed Rate	0
Total loans held for investment, gross	134	$ 109
Within One Year
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, gross	258,011
Within One Year | Mortgage loans, Single-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	97,426
Within One Year | Mortgage loans, Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	116,357
Within One Year | Mortgage loans, Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	40,053
Within One Year | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	3,919
Within One Year | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	0
Within One Year | Commercial business loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	122
Within One Year | Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	134
After One Year Through 3 Years
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, gross	235,164
After One Year Through 3 Years | Mortgage loans, Single-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	38,371
After One Year Through 3 Years | Mortgage loans, Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	164,462
After One Year Through 3 Years | Mortgage loans, Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	32,331
After One Year Through 3 Years | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	0
After One Year Through 3 Years | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	0
After One Year Through 3 Years | Commercial business loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	0
After One Year Through 3 Years | Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	0
After 3 Years Through 5 Years
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, gross	290,863
After 3 Years Through 5 Years | Mortgage loans, Single-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	117,809
After 3 Years Through 5 Years | Mortgage loans, Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	135,239
After 3 Years Through 5 Years | Mortgage loans, Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	37,815
After 3 Years Through 5 Years | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	0
After 3 Years Through 5 Years | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	0
After 3 Years Through 5 Years | Commercial business loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	0
After 3 Years Through 5 Years | Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	0
After 5 Years Through 10 Years
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, gross	83,365
After 5 Years Through 10 Years | Mortgage loans, Single-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	59,230
After 5 Years Through 10 Years | Mortgage loans, Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	22,795
After 5 Years Through 10 Years | Mortgage loans, Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	1,280
After 5 Years Through 10 Years | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	60
After 5 Years Through 10 Years | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	0
After 5 Years Through 10 Years | Commercial business loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	0
After 5 Years Through 10 Years | Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, Adjustable Rate	$ 0