Fair Value Measurements and Fair Value of Financial Instruments, Assets and Liabilities Measured on Nonrecurring Basis (Details) $ in Thousands	3 Months Ended
	Sep. 30, 2020 USD ($) Approach	Jun. 30, 2020 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans, recorded investment	$ 3,168	$ 3,270
Impaired loans, related allowance	214	228
Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans, recorded investment	2,055	1,809
Impaired loans, related allowance	214	228
Impaired loans, fair value	$ 1,841	1,581
Nonrecurring [Member] | Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of approaches used for appraisals | Approach	3
Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans, fair value	$ 0	0
Nonrecurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans, fair value	0	0
Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans, fair value	$ 1,841	$ 1,581