Securities - Gross Unrealized Losses and Fair Value, Continuous Unrealized Loss Position (Details) $ in Thousands	Dec. 31, 2021 USD ($) security	Jun. 30, 2021 USD ($)
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 82,889	$ 66,401
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	1,428	883
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or more, Fair Value	16,986	790
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or more, Unrealized Losses	668	258
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	99,875	67,191
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses	2,096	1,141
US States and Political Subdivisions Debt Securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	6,412	3,177
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	88	40
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	6,412	3,177
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses	$ 88	40
Number of individual securities in an unrealized loss position for less than 12 months | security	13
Corporate Obligations
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 4,364	9,331
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	39	79
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or more, Fair Value	6,167	720
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or more, Unrealized Losses	286	256
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	10,531	10,051
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses	$ 325	335
Number of individual securities in an unrealized loss position for less than 12 months | security	3
Number of individual securities in an unrealized loss position for more than 12 months | security	6
Total MBS and CMOs
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 72,113	53,893
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	1,301	764
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or more, Fair Value	10,819	70
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or more, Unrealized Losses	382	2
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	82,932	53,963
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses	$ 1,683	$ 766
Mortgage-Backed Securities
Debt Securities, Available-for-sale [Line Items]
Number of individual securities in an unrealized loss position for less than 12 months | security	29
Number of individual securities in an unrealized loss position for more than 12 months | security	5