Available for Sale Securities - Other Securities Policy: Pooled Trust Preferred Securities (Details)	12 Months Ended
	Jun. 30, 2021 USD ($) security	Jun. 30, 2020 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of Pooled Trust Preferred Securities	2
Fair Value of Pooled Trust Preferred Securities Held	$ 720,000
Unrealized Losses on Pooled Trust Preferred Securities in a Continuous Unrealized Loss Position for 12 Months or More	$ 257,000
Securities that continue to receive cash interest payments | security	1
Credit losses recognized on investments	$ 0	$ 0
Prepayments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	1.8
Annual defaults
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	220
Debt Securities Basis Points Thereafter	0.80
Recovery rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	10
Lagged years
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Term	2 years