Debt Securities - Schedule of Investments Classified by Contractual Maturity Date (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Jun. 30, 2021
Amortized Cost
Due within one year	$ 33,546	$ 34,615
Due after one year through five years	33,384	73,249
Due after five years through ten years	6,559	4,510
Due after ten years	0	0
Total	108,130	154,493
Estimated Fair Value
Due within one year	33,497	34,684
Due after one year through five years	32,322	73,633
Due after five years through ten years	6,433	4,738
Due after ten years	0	0
Estimated Fair Value	106,315	156,459
MBS, residential
Amortized Cost
Total	34,641	42,119
Estimated Fair Value
Estimated Fair Value	$ 34,063	$ 43,404