Fair Value of Financial Instruments - Additional Information (Details) - Level 3 - Fair value on non-recurring basis - Measurement Input, Appraised Value [Member]	Dec. 31, 2019 USD ($)	Jun. 30, 2019 USD ($)
Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Impaired loans	0.05	0.05
Other real estate owned, net	0.05	0.05
Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Impaired loans	0.15	0.15
Other real estate owned, net	0.15	0.15