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Investments- Fair Value of the Company's Investments by Type (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Marketable Securities [Line Items] |  |
Amortized Cost | $ 145,165 | $ 9,989
Accrued Interest | 190 | 65
Gross Unrealized Gains | 2 | 0
Gross Unrealized Losses | (445) | (13)
Estimated Fair Value | 144,912 | 10,041
Obligations of U.S. Government and its agencies |  |
Marketable Securities [Line Items] |  |
Amortized Cost | 137,222 | 4,043
Accrued Interest | 135 | 17
Gross Unrealized Gains | 2 | 0
Gross Unrealized Losses | (393) | (7)
Estimated Fair Value | 136,966 | 4,053
Corporate debt securities |  |
Marketable Securities [Line Items] |  |
Amortized Cost | 6,299 | 4,294
Accrued Interest | 47 | 40
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (38) | (5)
Estimated Fair Value | 6,308 | 4,329
Certificates of deposit |  |
Marketable Securities [Line Items] |  |
Amortized Cost | 1,644 | 1,652
Accrued Interest | 8 | 8
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (14) | (1)
Estimated Fair Value | $ 1,638 | $ 1,659

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