Investments - Maturities of HTM Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Amortized Cost
After five, but within ten years	$ 26,376
Greater than ten years	5,567
Amortized Cost	31,943	$ 35,223
Fair Value
After five, but within ten years	26,970
Greater than ten years	5,661
Total	$ 32,631	$ 35,942

Amount of investment in debt security measured at amortized cost (held-to-maturity).

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