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Investment Securities Investment Securities: Investments with Unrealized Loss Positions (Details) - USD ($) $ in Thousands | 12 Months Ended
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Jun. 30, 2017 | Jun. 30, 2016
Schedule of Available-for-sale Securities [Line Items] |  |
Unrealized Holding Losses, Less Than 12 Months, Fair Value | $ 28,722 | $ 103
Unrealized Holding Losses, Less Than 12 Months, Unrealized Losses | 77 | 1
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 | 28,722 | 103
Unrealized Holding Losses, Unrealized Losses | 77 | 1
U.S. government sponsored enterprise MBS |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Unrealized Holding Losses, Less Than 12 Months, Fair Value | 28,722 |
Unrealized Holding Losses, Less Than 12 Months, Unrealized Losses | 77 |
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 | 28,722 |
Unrealized Holding Losses, Unrealized Losses | $ 77 |
Private issue CMO |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Unrealized Holding Losses, Less Than 12 Months, Fair Value |  | 103
Unrealized Holding Losses, Less Than 12 Months, Unrealized Losses |  | 1
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 |  | 103
Unrealized Holding Losses, Unrealized Losses |  | $ 1

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- Definition Amount of unrealized loss on securities classified as available-for-sale that have been in a loss position for twelve months or longer. + 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=73527792&loc=d3e27290-111563 + Details
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- Definition Amount of unrealized loss on securities classified as available-for-sale. + 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=73527792&loc=d3e27290-111563 + Details
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- Definition 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. + 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)(1) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27290-111563 + Details
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- Definition 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=73527792&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=73527792&loc=d3e27337-111563 + Details
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