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Investment Securities - Amortized Cost and Fair Value by Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Amortized Cost
Due in one year or less	$ 4,776
Due after one year through five years	12,576
Due after five years through ten years	34,073
Due after ten years	101,931
Total	153,356
Mortgage-backed securities	125,126
Total available-for-sale securities	278,482	$ 193,785
Fair Value
Due in one year or less	4,798
Due after one year through five years	12,734
Due after five years through ten years	34,890
Due after ten years	101,093
Total	153,515
Mortgage-backed securities	125,013
Total available-for-sale securities	$ 278,528	$ 198,030

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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