Loans and Allowance for Credit Losses - Credit risk profile based on rating and payment activity (Details) - USD ($)		9 Months Ended	12 Months Ended
	Feb. 25, 2022	Mar. 31, 2023	Jun. 30, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
PCD loans receivable, net of ACL	$ 26,360,000
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
PCD loans receivable, net of ACL		$ 27,300,000	$ 23,100,000
Watch
Financing Receivable, Credit Quality Indicator [Line Items]
PCD loans receivable, net of ACL		25,100,000	4,700,000
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
PCD loans receivable, net of ACL		0	0
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
PCD loans receivable, net of ACL		6,700,000	1,100,000
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
PCD loans receivable, net of ACL		$ 0	$ 0