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Investments- Fair Value of the Company's Investments by Type (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Marketable Securities [Line Items] |  |
Amortized Cost | $ 215,125 | $ 9,989
Accrued Interest | 331 | 65
Gross Unrealized Gains | 5 | 0
Gross Unrealized Losses | (1,170) | (13)
Estimated Fair Value | 214,291 | 10,041
Obligations of U.S. Government and its agencies |  |
Marketable Securities [Line Items] |  |
Amortized Cost | 205,133 | 4,043
Accrued Interest | 284 | 17
Gross Unrealized Gains | 5 | 0
Gross Unrealized Losses | (1,074) | (7)
Estimated Fair Value | 204,348 | 4,053
Corporate debt securities |  |
Marketable Securities [Line Items] |  |
Amortized Cost | 7,337 | 4,294
Accrued Interest | 37 | 40
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (64) | (5)
Estimated Fair Value | 7,310 | 4,329
Certificates of deposit |  |
Marketable Securities [Line Items] |  |
Amortized Cost | 2,655 | 1,652
Accrued Interest | 10 | 8
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (32) | (1)
Estimated Fair Value | $ 2,633 | $ 1,659

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