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Derivative Instruments and Hedging Activities- Effects of Derivative Instruments on Balance Sheet (Detail) (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Jun. 30, 2022
--- | --- | ---
Derivative [Line Items] |  |
Loans receivable | $ 5,984,133 | $ 5,417,845
Closed Portfolio Segment |  |
Derivative [Line Items] |  |
Loans receivable | 852,400 |
Interest Rate Swaps |  |
Derivative [Line Items] |  |
Carrying amount of the hedged assets | 494,972 |
Fair value hedging adjustment included in the carrying amount of the hedged assets | $ (5,028) |

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- Definition Amount excluding accrued interest, before allowance for credit loss, of financing receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 3B -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447 + Details
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