Loans and Leases and Allowance for Credit Losses - Activity in Allowance for Loan and Lease Losses, before ASU 2016-13 Adoption (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Jun. 30, 2021
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually, before ASU 2016-13 adoption		$ 18,050
Collectively, before ASU 2016-13 adoption		2,126,746
Total Financing Receivables, before ASU 2016-13 adoption	$ 1,987,861	2,144,796
Commercial, Residential, and Farm Land Real Estate Portfolio Segment [Member] \| Real Estate Sector [Member]
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually, before ASU 2016-13 adoption		15,677
Collectively, before ASU 2016-13 adoption		1,780,290
Total Financing Receivables, before ASU 2016-13 adoption		1,795,967
Agricultural Portfolio Segment [Member] \| Agricultural Sector [Member]
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually, before ASU 2016-13 adoption		517
Collectively, before ASU 2016-13 adoption		42,435
Total Financing Receivables, before ASU 2016-13 adoption		42,952
Commercial Portfolio Segment [Member] \| Commercial and Industrial Sector [Member]
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually, before ASU 2016-13 adoption		1,649
Collectively, before ASU 2016-13 adoption		299,334
Total Financing Receivables, before ASU 2016-13 adoption		300,983
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually, before ASU 2016-13 adoption		207
Collectively, before ASU 2016-13 adoption		4,687
Total Financing Receivables, before ASU 2016-13 adoption		$ 4,894

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- Definition

The balance of financing receivables that were collectively evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (h)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524

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- Definition

The balance of financing receivables that were individually evaluated for impairment.

+ References

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

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