Debt Securities - Schedule of Investments Classified by Contractual Maturity Date (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019
Amortized Cost
Due within one year	$ 29,190	$ 5,350
Due after one year through five years	44,881	30,526
Due after five years through ten years	2,434	5,538
Due after ten years	1,784	4,642
Total	124,918	120,834
Estimated Fair Value
Due within one year	29,247	5,359
Due after one year through five years	45,516	30,784
Due after five years through ten years	2,630	5,798
Due after ten years	1,789	4,665
Total	127,537	121,786
Mortgage-backed Securities
Amortized Cost
Total	46,629	74,778
Estimated Fair Value
Total	$ 48,355	$ 75,180