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Marketable Securities (Tables)
6 Months Ended
Jun. 30, 2022
Investments, Debt and Equity Securities [Abstract]  
Schedule of Available-for-sale and Equity Securities
The following tables show the Company’s available-for-sale securities’ adjusted cost, gross unrealized gains, gross unrealized losses and fair value by significant investment category as of June 30, 2022 and December 31, 2021, respectively:

June 30, 2022
Marketable Securities:Adjusted CostUnrealized GainsUnrealized LossesFair Value
Mutual and money market funds$35,860 $293 $(1,059)$35,094 
Corporate bonds9,962 (560)9,403 
Government securities - U.S.4,028 (263)3,766 
Other fixed-income securities1,774 — (44)1,730 
Total$51,624 $295 $(1,926)$49,993 
December 31, 2021
Marketable Securities:Adjusted CostUnrealized GainsUnrealized LossesFair Value
Mutual and money market funds$78,331 $813 $(1,046)$78,098 
Corporate bonds16,478 94 (93)16,479 
Government securities - U.S.9,530 39 (98)9,471 
Other fixed-income securities2,473 (10)2,465 
Total$106,812 $948 $(1,247)$106,513 
Schedule of Contractual Maturity Dates
The following table summarizes the estimated fair value of the Company’s investments in marketable debt securities, accounted for as available-for-sale debt securities and classified by the contractual maturity date of the securities as of June 30, 2022:

Maturities
Marketable Debt Securities:Less than 1 Year1-5 Years5-10 YearsGreater than 10 YearsTotal
Corporate bonds$785 $8,618 $— $— $9,403 
Government securities - U.S.— 2,129 665 972 3,766 
Other fixed-income securities— 1,503 227 — 1,730 
Total$785 $12,250 $892 $972 $14,899 
Schedule of Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value The following table shows the gross unrealized losses and fair value of the Company’s available-for-sale debt securities at June 30, 2022. The unrealized losses in the table below are driven by factors other than credit risk. The Company does not intend to sell the investments and it is not more likely than not that it will be required to sell the investments before recovery of their amortized cost bases.
Less than 12 monthsGreater than 12 monthsTotal
Marketable Debt Securities:Fair valueUnrealized LossesFair valueUnrealized LossesFair valueUnrealized Losses
Corporate bonds$8,040 $466 $1,119 $94 $9,159 $560 
Government securities - U.S.1,900 96 1,785 167 3,685 263 
Other fixed-income securities1,408 26 322 18 1,730 44 
Total$11,348 $588 $3,226 $279 $14,574 $867