Investment Securities - Investments with unrealized losses (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Jun. 30, 2021
Fair Value
Less than 12 Months	$ 129,754	$ 78,409
12 Months or More	30,274	2,407
Total Fair Value	160,028	80,816
Unrealized Losses
Less than 12 Months	(14,287)	(1,021)
12 Months or More	(5,769)	(53)
Total Unrealized Losses	(20,056)	(1,074)
Fair Value
Less than 12 Months	88,321
Total Fair Value	88,321
Unrealized Losses
Less than 12 Months	(13,814)
Total Unrealized Losses	(13,814)
Less than 12 Months Fair Value	218,075
12 Months or More Fair Value	30,274
Total Fair Value	248,349
Less than 12 Months Unrealized Losses	(28,101)
12 Months or More Unrealized Losses	(5,769)
Total Unrealized Losses	(33,870)
Mortgage-backed securities
Fair Value
Less than 12 Months	93,726	43,152
12 Months or More	13,750
Total Fair Value	107,476	43,152
Unrealized Losses
Less than 12 Months	(10,351)	(374)
12 Months or More	(2,374)
Total Unrealized Losses	(12,725)	(374)
Fair Value
Less than 12 Months	88,321
Total Fair Value	88,321
Unrealized Losses
Less than 12 Months	(13,814)
Total Unrealized Losses	(13,814)
U.S. agency collateralized mortgage obligations
Fair Value
Less than 12 Months	2,968	10,613
12 Months or More	6,741	2,407
Total Fair Value	9,709	13,020
Unrealized Losses
Less than 12 Months	(488)	(202)
12 Months or More	(804)	(53)
Total Unrealized Losses	(1,292)	(255)
U.S. government agency securities
Fair Value
Less than 12 Months	61	6,896
12 Months or More	1,556
Total Fair Value	1,617	6,896
Unrealized Losses
Less than 12 Months	(3)	(56)
12 Months or More	(52)
Total Unrealized Losses	(55)	(56)
Municipal bonds
Fair Value
Less than 12 Months	7,415	17,748
12 Months or More	8,227
Total Fair Value	15,642	17,748
Unrealized Losses
Less than 12 Months	(1,979)	(389)
12 Months or More	(2,539)
Total Unrealized Losses	(4,518)	$ (389)
Corporate bonds
Fair Value
Less than 12 Months	25,584
Total Fair Value	25,584
Unrealized Losses
Less than 12 Months	(1,466)
Total Unrealized Losses	$ (1,466)