Fair Value of Financial Instruments - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Jun. 30, 2022
Assets:
Investment securities available for sale	$ 1,227,729	$ 1,344,093
Interest rate contracts	71,624	41,223
Total assets	1,299,353	1,385,316
Debt Securities
Assets:
Investment securities available for sale	648,184	656,202
Obligations of state and political subdivisions
Assets:
Investment securities available for sale		28,435
Asset-backed securities
Assets:
Investment securities available for sale	136,170	166,557
Collateralized loan obligations
Assets:
Investment securities available for sale	376,996	307,813
Corporate bonds
Assets:
Investment securities available for sale	135,018	153,397
Mortgage-backed securities:
Assets:
Investment securities available for sale	579,545	687,891
Collateralized mortgage obligations
Assets:
Investment securities available for sale		7,122
Residential pass-through securities
Assets:
Investment securities available for sale	436,151	514,758
Commercial pass-through securities
Assets:
Investment securities available for sale	143,394	166,011
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Investment securities available for sale	0	0
Interest rate contracts	0	0
Total assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Debt Securities
Assets:
Investment securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Obligations of state and political subdivisions
Assets:
Investment securities available for sale		0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Asset-backed securities
Assets:
Investment securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Collateralized loan obligations
Assets:
Investment securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Corporate bonds
Assets:
Investment securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Mortgage-backed securities:
Assets:
Investment securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Collateralized mortgage obligations
Assets:
Investment securities available for sale		0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Residential pass-through securities
Assets:
Investment securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Commercial pass-through securities
Assets:
Investment securities available for sale	0	0
Significant Other Observable Inputs (Level 2)
Assets:
Investment securities available for sale	1,227,729	1,344,093
Interest rate contracts	71,624	41,223
Total assets	1,299,353	1,385,316
Significant Other Observable Inputs (Level 2) \| Debt Securities
Assets:
Investment securities available for sale	648,184	656,202
Significant Other Observable Inputs (Level 2) \| Obligations of state and political subdivisions
Assets:
Investment securities available for sale		28,435
Significant Other Observable Inputs (Level 2) \| Asset-backed securities
Assets:
Investment securities available for sale	136,170	166,557
Significant Other Observable Inputs (Level 2) \| Collateralized loan obligations
Assets:
Investment securities available for sale	376,996	307,813
Significant Other Observable Inputs (Level 2) \| Corporate bonds
Assets:
Investment securities available for sale	135,018	153,397
Significant Other Observable Inputs (Level 2) \| Mortgage-backed securities:
Assets:
Investment securities available for sale	579,545	687,891
Significant Other Observable Inputs (Level 2) \| Collateralized mortgage obligations
Assets:
Investment securities available for sale		7,122
Significant Other Observable Inputs (Level 2) \| Residential pass-through securities
Assets:
Investment securities available for sale	436,151	514,758
Significant Other Observable Inputs (Level 2) \| Commercial pass-through securities
Assets:
Investment securities available for sale	143,394	166,011
Significant Unobservable Inputs (Level 3)
Assets:
Investment securities available for sale	0	0
Interest rate contracts	0	0
Total assets	0	0
Significant Unobservable Inputs (Level 3) \| Debt Securities
Assets:
Investment securities available for sale	0	0
Significant Unobservable Inputs (Level 3) \| Obligations of state and political subdivisions
Assets:
Investment securities available for sale		0
Significant Unobservable Inputs (Level 3) \| Asset-backed securities
Assets:
Investment securities available for sale	0	0
Significant Unobservable Inputs (Level 3) \| Collateralized loan obligations
Assets:
Investment securities available for sale	0	0
Significant Unobservable Inputs (Level 3) \| Corporate bonds
Assets:
Investment securities available for sale	0	0
Significant Unobservable Inputs (Level 3) \| Mortgage-backed securities:
Assets:
Investment securities available for sale	0	0
Significant Unobservable Inputs (Level 3) \| Collateralized mortgage obligations
Assets:
Investment securities available for sale		0
Significant Unobservable Inputs (Level 3) \| Residential pass-through securities
Assets:
Investment securities available for sale	0	0
Significant Unobservable Inputs (Level 3) \| Commercial pass-through securities
Assets:
Investment securities available for sale	0	0
Interest rate contracts
Assets:
Interest rate contracts	71,624	41,223
Interest rate contracts \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Interest rate contracts	0	0
Interest rate contracts \| Significant Other Observable Inputs (Level 2)
Assets:
Interest rate contracts	71,624	41,223
Interest rate contracts \| Significant Unobservable Inputs (Level 3)
Assets:
Interest rate contracts	$ 0	$ 0

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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