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Investments, Debt Securities, Amortized Cost and Fair Value by Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Available-for-Sale Debt Securities, Amortized Cost [Abstract]
Due in one year or less	$ 15,999
Due after one year through five years	186,055
Due after five years through ten years	126,447
Due after ten years	171,000
Amortized cost	499,501	$ 412,018
Available-for-Sale Debt Securities, Fair Value [Abstract]
Due in one year or less	16,034
Due after one year through five years	177,170
Due after five years through ten years	116,100
Due after ten years	153,579
Fair value	$ 462,883	$ 412,402

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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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