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v3.23.1

Supplementary Balance Sheet Information - Investments Available-for-sale (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Maturity less than 1 year: |  |
Amortized Cost | $ 50,673 | $ 84,299
Gross Unrealized Gains | 12 | 19
Gross Unrealized Losses | (165) | (394)
Fair Market Value | 50,520 | 83,924
Maturity 1 to 2 years: |  |
Amortized Cost | 31,354 | 5,016
Gross Unrealized Gains | 104 | 1
Gross Unrealized Losses | (27) | (21)
Fair Market Value | 31,431 | 4,996
Amortized Cost | 82,027 | 89,315
Gross Unrealized Gains | 116 | 20
Gross Unrealized Losses | (192) | (415)
Fair Market Value | 81,951 | 88,920
Certificate of deposit |  |
Maturity less than 1 year: |  |
Amortized Cost | 13,964 | 16,101
Gross Unrealized Gains | 1 | 3
Gross Unrealized Losses | (40) | (81)
Fair Market Value | 13,925 | 16,023
Corporate debt securities |  |
Maturity less than 1 year: |  |
Amortized Cost | 22,258 | 44,806
Gross Unrealized Gains | 4 | 8
Gross Unrealized Losses | (118) | (275)
Fair Market Value | 22,144 | 44,539
Maturity 1 to 2 years: |  |
Amortized Cost | 10,687 | 5,016
Gross Unrealized Gains | 24 | 1
Gross Unrealized Losses | (27) | (21)
Fair Market Value | 10,684 | 4,996
Commercial paper |  |
Maturity less than 1 year: |  |
Amortized Cost | 10,402 | 13,203
Gross Unrealized Gains | 3 | 4
Gross Unrealized Losses | (7) | (20)
Fair Market Value | 10,398 | 13,187
U.S. government agencies |  |
Maturity less than 1 year: |  |
Amortized Cost | 4,049 |
Gross Unrealized Gains | 4 |
Gross Unrealized Losses | 0 |
Fair Market Value | 4,053 |
Maturity 1 to 2 years: |  |
Amortized Cost | 3,781 |
Gross Unrealized Gains | 8 |
Gross Unrealized Losses | 0 |
Fair Market Value | 3,789 |
Non U.S. government |  |
Maturity less than 1 year: |  |
Amortized Cost |  | 2,284
Gross Unrealized Gains |  | 4
Gross Unrealized Losses |  | 0
Fair Market Value |  | 2,288
U.S. treasury securities |  |
Maturity less than 1 year: |  |
Amortized Cost |  | 7,905
Gross Unrealized Gains |  | 0
Gross Unrealized Losses |  | (18)
Fair Market Value |  | $ 7,887
Maturity 1 to 2 years: |  |
Amortized Cost | 16,886 |
Gross Unrealized Gains | 72 |
Gross Unrealized Losses | 0 |
Fair Market Value | $ 16,958 |

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