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Organization and Significant Accounting Policies - Investments in Marketable Securities (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Organization and Significant Accounting Policies
Impairments related to credit losses	$ 0	$ 0	$ 0
Interest income	$ 4,500,000	$ 2,800,000	$ 1,900,000

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Amount of expense 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), for which no credit loss was previously recorded.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479106/326-30-50-9

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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 220
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-Section S99
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-Subparagraph (SX 210.5-03(7)(b))
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-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

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-Topic 280
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-Section 50
-Paragraph 32
-Subparagraph (ee)
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