Annual report pursuant to Section 13 and 15(d)

Investments - Breakdown of Investments in Unrealized Loss Position (Details)

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Investments - Breakdown of Investments in Unrealized Loss Position (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
U.S. Treasury securities    
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]    
Less than 12 months $ 16,702 $ 8,141
Greater than 12 months 7,999 0
Total 24,701 8,141
Gross Unrealized Loss    
Less than 12 months (365) (13)
Greater than 12 months (58) 0
Total (423) (13)
Corporate bonds    
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]    
Less than 12 months 18,951 5,640
Greater than 12 months 1,478 0
Total 20,429 5,640
Gross Unrealized Loss    
Less than 12 months (387) (2)
Greater than 12 months (27)  
Total $ (414) $ (2)