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Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk - Effect of Fair Value (Details) - USD ($) |  |  | 1 Months Ended | 2 Months Ended
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Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | May 31, 2018 | May 31, 2017
Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk |  |  |  |  |  |
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income | $ 473,000 | $ 632,000 |  |  |  |
Amount of Gain or (Loss) Recognized in Income on Derivative |  |  | $ (42,000) | $ (18,000) | $ (116,000) | $ (18,000)

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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
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- Definition The amount of net gains or losses on interest rate cash flow hedges reclassified during the period to earnings from accumulated other comprehensive income upon the hedged transaction affecting earnings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
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