Fair Value of Financial Instruments: Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Jun. 30, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held for Investment, at Fair Value	$ 5,157	$ 6,445
Loans held for sale, at fair value	96,589	116,548
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	8,405	9,318
Loans Held for Investment, at Fair Value	5,157	6,445
Loans held for sale, at fair value	96,589	116,548
Interest-only strips	26	31
Derivative assets	739	1,470
Total assets	110,916	133,812
Derivative liabilities	228	38
Total liabilities	228	38
Recurring | Commitments to extend credit on loans to be held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	737	847
Derivative liabilities	21	38
Recurring | Mandatory loan sale commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		47
Derivative liabilities	24
Recurring | TBA MBS trades
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	2	539
Derivative liabilities	183
Recurring | Option contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		37
Recurring | U.S. government agency MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	4,859	5,383
Recurring | U.S. government sponsored enterprise MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	3,127	3,474
Recurring | Private issue CMO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	419	461
Recurring | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	0	0
Loans Held for Investment, at Fair Value	0	0
Loans held for sale, at fair value	0	0
Interest-only strips	0	0
Derivative assets	0	0
Total assets	0	0
Derivative liabilities	0	0
Total liabilities	0	0
Recurring | Fair Value, Inputs, Level 1 | Commitments to extend credit on loans to be held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Recurring | Fair Value, Inputs, Level 1 | Mandatory loan sale commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		0
Derivative liabilities	0
Recurring | Fair Value, Inputs, Level 1 | TBA MBS trades
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0
Recurring | Fair Value, Inputs, Level 1 | Option contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		0
Recurring | Fair Value, Inputs, Level 1 | U.S. government agency MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	0	0
Recurring | Fair Value, Inputs, Level 1 | U.S. government sponsored enterprise MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	0	0
Recurring | Fair Value, Inputs, Level 1 | Private issue CMO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	0	0
Recurring | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	7,986	8,857
Loans Held for Investment, at Fair Value	0	0
Loans held for sale, at fair value	96,589	116,548
Interest-only strips	0	0
Derivative assets	2	539
Total assets	104,577	125,944
Derivative liabilities	183	0
Total liabilities	183	0
Recurring | Fair Value, Inputs, Level 2 | Commitments to extend credit on loans to be held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Recurring | Fair Value, Inputs, Level 2 | Mandatory loan sale commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		0
Derivative liabilities	0
Recurring | Fair Value, Inputs, Level 2 | TBA MBS trades
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	2	539
Derivative liabilities	183
Recurring | Fair Value, Inputs, Level 2 | Option contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		0
Recurring | Fair Value, Inputs, Level 2 | U.S. government agency MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	4,859	5,383
Recurring | Fair Value, Inputs, Level 2 | U.S. government sponsored enterprise MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	3,127	3,474
Recurring | Fair Value, Inputs, Level 2 | Private issue CMO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	0	0
Recurring | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	419	461
Loans Held for Investment, at Fair Value	5,157	6,445
Loans held for sale, at fair value	0	0
Interest-only strips	26	31
Derivative assets	737	931
Total assets	6,339	7,868
Derivative liabilities	45	38
Total liabilities	45	38
Recurring | Fair Value, Inputs, Level 3 | Commitments to extend credit on loans to be held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	737	847
Derivative liabilities	21	38
Recurring | Fair Value, Inputs, Level 3 | Mandatory loan sale commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		47
Derivative liabilities	24
Recurring | Fair Value, Inputs, Level 3 | TBA MBS trades
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0
Recurring | Fair Value, Inputs, Level 3 | Option contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		37
Recurring | Fair Value, Inputs, Level 3 | U.S. government agency MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	0	0
Recurring | Fair Value, Inputs, Level 3 | U.S. government sponsored enterprise MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	0	0
Recurring | Fair Value, Inputs, Level 3 | Private issue CMO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	$ 419	$ 461