Regulatory Matters, Actual and Required Capital Amounts and Ratios for OCC Regulatory Capital Adequacy Purposes (Details) $ in Thousands		Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)
Actual Amount [Abstract]
Common Equity Tier 1	[1]	$ 56,720	$ 57,738
Tier 1 Capital	[1]	56,720	57,738
Total Capital	[1]	61,204	62,312
Leverage	[2]	56,720	57,738
Tangible Capital	[2]	$ 56,720	$ 57,738
Actual Ratio [Abstract]
Common Equity Tier 1	[1]	0.1359	0.1329
Tier 1 Capital	[1]	0.1359	0.1329
Total Capital	[1]	0.1467	0.1435
Leverage	[2]	0.094	0.0899
Tangible Capital	[2]	0.094	0.0899
Required for Capital Adequacy Purposes, Amount [Abstract]
Common Equity Tier 1	[1]	$ 18,809	$ 19,546
Tier 1 Capital	[1]	25,079	26,061
Total Capital	[1]	33,439	34,748
Leverage	[2]	24,129	25,683
Tangible Capital	[2]	$ 9,048	$ 9,631
Required for Capital Adequacy Purposes, Ratio [Abstract]
Common Equity Tier 1	[1]	0.045	0.045
Tier 1 Capital	[1]	0.06	0.06
Total Capital	[1]	0.08	0.08
Leverage	[2]	0.04	0.04
Tangible Capital	[2]	0.015	0.015

[1] Amounts and Ratios to Total Risk-Weighted Assets

[2] Amounts and Ratios to Adjusted Average Total Consolidated Assets