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Investments - Available-for-Sale (Tables)
3 Months Ended
Mar. 31, 2021
Investments, Debt and Equity Securities [Abstract]  
Investments available for sale
Investments available-for-sale consisted of the following as of March 31, 2021 and December 31, 2020 (table in thousands):
March 31, 2021
Amortized CostUnrealized GainUnrealized LossAccrued Interest IncomeFair Value
Available-for-Sale Securities
Bonds$10,441 $$(1)$22 $10,464 
December 31, 2020
Amortized CostUnrealized GainUnrealized LossAccrued InterestFair Value
Available-for-Sale Securities
Bonds$9,987 $$— $$9,997