Investments (Amortized Cost and Fair Values of HTM Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Held-to-maturity, Amortized Cost
Due in one year or less	$ 0
Due after one year through five years	510
Due after five years through ten years	787
Due after ten years	0
HTM securities	1,297	$ 1,302
Held-to-maturity, Fair Value
Due in one year or less	0
Due after one year through five years	547
Due after five years through ten years	864
Due after ten years	0
Debt Securities, Held-to-maturity, Fair Value	$ 1,411	$ 1,359