Securities - Amortized cost, gross unrealized gains, gross unrealized losses, ACL, and approximate fair value of securities available for sale (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Jun. 30, 2021
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortzied Cost	$ 205,285	$ 203,286
Gross Unrealized Gains	3,394	4,875
Gross Unrealized Losses	(2,096)	(1,141)
Allowance for Credit Losses	0	0
Estimated Fair Value	206,583	207,020
US States and Political Subdivisions Debt Securities
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortzied Cost	46,042	46,257
Gross Unrealized Gains	1,335	1,479
Gross Unrealized Losses	(88)	(40)
Allowance for Credit Losses	0	0
Estimated Fair Value	47,289	47,696
Corporate Obligations
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortzied Cost	19,817	20,356
Gross Unrealized Gains	278	290
Gross Unrealized Losses	(325)	(335)
Allowance for Credit Losses	0	0
Estimated Fair Value	19,770	20,311
Other Debt Obligations
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortzied Cost	566	647
Gross Unrealized Gains	1	25
Allowance for Credit Losses	0	0
Estimated Fair Value	567	672
Debt and Equity Securities
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortzied Cost	66,425	67,260
Gross Unrealized Gains	1,614	1,794
Gross Unrealized Losses	(413)	(375)
Allowance for Credit Losses	0	0
Estimated Fair Value	67,626	68,679
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortzied Cost	58,941	64,400
Gross Unrealized Gains	576	932
Gross Unrealized Losses	(653)	(379)
Allowance for Credit Losses	0	0
Estimated Fair Value	58,864	64,953
Commercial MBS issued by GSEs
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortzied Cost	38,256	35,425
Gross Unrealized Gains	852	1,394
Gross Unrealized Losses	(556)	(338)
Allowance for Credit Losses	0	0
Estimated Fair Value	38,552	36,481
CMOs issued by GSEs
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortzied Cost	41,663	36,201
Gross Unrealized Gains	352	755
Gross Unrealized Losses	(474)	(49)
Allowance for Credit Losses	0	0
Estimated Fair Value	41,541	36,907
Total MBS and CMOs
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortzied Cost	138,860	136,026
Gross Unrealized Gains	1,780	3,081
Gross Unrealized Losses	(1,683)	(766)
Allowance for Credit Losses	0	0
Estimated Fair Value	$ 138,957	$ 138,341

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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