Investment Securities Investment Securities: Investments with Unrealized Loss Positions (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2018	Jun. 30, 2017
Schedule of Available-for-sale Securities [Line Items]
Unrealized Holding Losses, Less Than 12 Months, Fair Value	$ 50,009	$ 28,722
Unrealized Holding Losses, Less Than 12 Months, Unrealized Losses	777	77
Unrealized Holding Losses, 12 Months or More, Fair Value	0	0
Unrealized Holding Losses, 12 Months or More, Unrealized Losses	0	0
Unrealized Holding Losses, Fair Value	50,009	28,722
Unrealized Holding Losses, Unrealized Losses	777	77
U.S. government sponsored enterprise MBS
Schedule of Available-for-sale Securities [Line Items]
Unrealized Holding Losses, Less Than 12 Months, Fair Value	47,045	28,722
Unrealized Holding Losses, Less Than 12 Months, Unrealized Losses	762	77
Unrealized Holding Losses, 12 Months or More, Fair Value	0	0
Unrealized Holding Losses, 12 Months or More, Unrealized Losses	0	0
Unrealized Holding Losses, Fair Value	47,045	28,722
Unrealized Holding Losses, Unrealized Losses	762	$ 77
Common Stock
Schedule of Available-for-sale Securities [Line Items]
Unrealized Holding Losses, Less Than 12 Months, Fair Value	2,964
Unrealized Holding Losses, Less Than 12 Months, Unrealized Losses	15
Unrealized Holding Losses, 12 Months or More, Fair Value	0
Unrealized Holding Losses, 12 Months or More, Unrealized Losses	0
Unrealized Holding Losses, Fair Value	2,964
Unrealized Holding Losses, Unrealized Losses	$ 15

Amount of unrealized loss on securities classified as available-for-sale that have been in a loss position for twelve months or longer.

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Amount of unrealized loss on securities classified as available-for-sale.

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This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities.

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Amount of unrealized loss on investments in available-for-sale securities that have been in a loss position for less than twelve months.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27337-111563

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This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27337-111563

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563

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-Publisher FASB
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