Quarterly report pursuant to Section 13 or 15(d)

Investments - Contractual Maturity (Details)

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Investments - Contractual Maturity (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]    
Fair Value $ 3,151 $ 6,621
Gross Unrealized Loss (44) (96)
12 months or longer [Member]    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 0  
Gross Unrealized Loss 0  
Less than 12 months [Member]    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 3,151  
Gross Unrealized Loss (44)  
Corporate bonds    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 3,151 6,621
Gross Unrealized Loss (44) $ (96)
Corporate bonds | 12 months or longer [Member]    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 0  
Gross Unrealized Loss 0  
Corporate bonds | Less than 12 months [Member]    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 3,151  
Gross Unrealized Loss $ (44)