Investments- Fair Value of the Company's Investments by Type (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Marketable Securities [Line Items]
Amortized Cost	$ 252,405	$ 278,131
Accrued Interest	51	135
Gross Unrealized Gains	1	150
Gross Unrealized Losses	(236)	(72)
Estimated Fair Value	$ 252,221	$ 278,344
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Investments	Investments
Obligations of U.S. Government and its agencies
Marketable Securities [Line Items]
Amortized Cost	$ 251,425	$ 277,151
Accrued Interest	45	121
Gross Unrealized Gains	1	150
Gross Unrealized Losses	(231)	(64)
Estimated Fair Value	251,240	277,358
Certificates of deposit
Marketable Securities [Line Items]
Amortized Cost	980	980
Accrued Interest	6	14
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(5)	(8)
Estimated Fair Value	$ 981	$ 986

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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-Publisher FASB
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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
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Indicates line item in statement of financial position that includes accrued interest, after allowance for credit loss, on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost excluding accrued interest, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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