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Derivative Instruments and Hedging Activities - Fair Values of Derivative Financial Instruments as well as Their Classification on Statement of Financial Condition (Detail) - Derivatives Designated as Hedging Instruments [Member] - USD ($) $ in Thousands | Sep. 30, 2019 | Jun. 30, 2019
--- | --- | ---
Other Assets [Member] |  |
Derivative [Line Items] |  |
Fair Value | $ 2,430 | $ 3,856
Other Liabilities [Member] |  |
Derivative [Line Items] |  |
Fair Value | 369 | 140
Interest Rate Swaps [Member] | Other Assets [Member] |  |
Derivative [Line Items] |  |
Fair Value | 1,012 | 3,856
Interest Rate Swaps [Member] | Other Liabilities [Member] |  |
Derivative [Line Items] |  |
Fair Value | 369 | $ 140
Interest Rate Caps [Member] | Other Assets [Member] |  |
Derivative [Line Items] |  |
Fair Value | $ 1,418 |

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- Definition Fair value of the assets less the liabilities of a derivative or group of derivatives. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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