Basis of Presentation - Correction of an Immaterial Error in Prior Period Financial Statements (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024	Jun. 30, 2024
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Error Correction, Previously Immaterial	false		false
Liabilities and Stockholders' Equity
Deposits	$ 4,261,382		$ 4,261,382		$ 3,943,059
Securities sold under agreements to repurchase	15,000		15,000		9,398
Interest Expense
Deposits	28,795	$ 27,893	87,129	$ 73,705
Securities sold under agreements to repurchase	189	128	575	327
Financial liabilities
Deposits	4,261,382		4,261,382		3,943,059
Securities sold under agreements to repurchase	15,000		15,000		9,398
Fair Value, Inputs, Level 2
Financial liabilities
Securities sold under agreements to repurchase	$ 15,000		$ 15,000		9,398
Previously Reported
Liabilities and Stockholders' Equity
Deposits					3,952,457
Securities sold under agreements to repurchase					0
Interest Expense
Deposits		28,021		74,032
Securities sold under agreements to repurchase		0		0
Financial liabilities
Deposits					3,952,457
Securities sold under agreements to repurchase					0
Previously Reported | Fair Value, Inputs, Level 2
Financial liabilities
Securities sold under agreements to repurchase					0
Revision of Prior Period, Adjustment
Liabilities and Stockholders' Equity
Deposits					(9,398)
Securities sold under agreements to repurchase					9,398
Interest Expense
Deposits		(128)		(327)
Securities sold under agreements to repurchase		$ 128		$ 327
Financial liabilities
Deposits					(9,398)
Securities sold under agreements to repurchase					9,398
Revision of Prior Period, Adjustment | Fair Value, Inputs, Level 2
Financial liabilities
Securities sold under agreements to repurchase					$ 9,398