Securities - Schedule of Available for Sale Securities (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Sep. 30, 2021	Jun. 30, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 205,663	$ 203,286
Gross Unrealized Gains	4,751	4,875
Gross Unrealized Losses	(1,005)	(1,141)
Total AFS securities	209,409	207,020
US States and Political Subdivisions Debt Securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	45,360	46,257
Gross Unrealized Gains	1,545	1,479
Gross Unrealized Losses	(36)	(40)
Total AFS securities	46,869	47,696
Corporate Obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	18,853	20,356
Gross Unrealized Gains	325	290
Gross Unrealized Losses	(346)	(335)
Total AFS securities	18,832	20,311
Other Debt Obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	591	647
Gross Unrealized Gains	17	25
Total AFS securities	608	672
Debt and Equity Securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	64,804	67,260
Gross Unrealized Gains	1,887	1,794
Gross Unrealized Losses	(382)	(375)
Total AFS securities	66,309	68,679
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	63,247	64,400
Gross Unrealized Gains	950	932
Gross Unrealized Losses	(258)	(379)
Total AFS securities	63,939	64,953
Commercial MBS issued by GSEs
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	35,349	35,425
Gross Unrealized Gains	1,286	1,394
Gross Unrealized Losses	(291)	(338)
Total AFS securities	36,344	36,481
CMOs issued by GSEs
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	42,263	36,201
Gross Unrealized Gains	628	755
Gross Unrealized Losses	(74)	(49)
Total AFS securities	42,817	36,907
Total MBS and CMOs
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	140,859	136,026
Gross Unrealized Gains	2,864	3,081
Gross Unrealized Losses	(623)	(766)
Total AFS securities	$ 143,100	$ 138,341

Amortized cost of 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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