Investment Securities - Amortized Cost and Fair Value of Debt Securities (Details) $ in Thousands	Jun. 30, 2020 USD ($)
Amortized Cost
Due in one year or less	$ 6,714
Due after one year to five years	65,192
Due after five years to ten years	67,627
Due after ten years	19,527
Total	159,060
Fair Value
Due in one year or less	6,769
Due after one year to five years	65,796
Due after five years to ten years	72,018
Due after ten years	19,786
Total	$ 164,369