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Derivatives and Hedging Activities (Interest Rates Narrative) (Details) - USD ($) | 12 Months Ended |
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Jun. 30, 2019 | Jun. 30, 2018 | Apr. 30, 2019
Interest Rate Swap [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, notional amount |  |  | $ 100,000,000.0
Ineffective portion of cash flow hedge | $ 0 | $ 0 |
Interest Rate Swap, Maturing April 30, 2024 [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, notional amount |  |  | 50,000,000.0
Interest Rate Swap, Maturing April 30, 2026 [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, notional amount |  |  | $ 50,000,000.0

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- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959 + Details
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- Definition The net gain (loss) recognized in earnings during the reporting period representing the amount of the cash flow hedges' ineffectiveness. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 + Details
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