Quarterly report pursuant to Section 13 or 15(d)

Marketable Securities - Marketable Securities (Details)

v3.23.1
Marketable Securities - Marketable Securities (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Debt Securities, Available-for-Sale [Line Items]    
Adjusted Cost $ 73,898 $ 90,321
Unrealized Gain/(Loss) (4,248) (6,615)
Fair Value 69,650 83,706
Corporate Bonds    
Debt Securities, Available-for-Sale [Line Items]    
Adjusted Cost 35,901 40,823
Unrealized Gain/(Loss) (1,962) (2,579)
Fair Value 33,939 38,244
U.S. Treasury    
Debt Securities, Available-for-Sale [Line Items]    
Adjusted Cost 20,816 20,869
Unrealized Gain/(Loss) (1,041) (1,313)
Fair Value 19,775 19,556
Mortgage-Backed    
Debt Securities, Available-for-Sale [Line Items]    
Adjusted Cost   5,980
Unrealized Gain/(Loss)   (606)
Fair Value   5,374
U.S. agency and government sponsored securities    
Debt Securities, Available-for-Sale [Line Items]    
Adjusted Cost 6,898 10,781
Unrealized Gain/(Loss) (506) (1,221)
Fair Value 6,392 9,560
U.S. states and municipalities    
Debt Securities, Available-for-Sale [Line Items]    
Adjusted Cost 10,283 11,801
Unrealized Gain/(Loss) (739) (895)
Fair Value $ 9,544 10,906
Asset-Backed    
Debt Securities, Available-for-Sale [Line Items]    
Adjusted Cost   67
Unrealized Gain/(Loss)   (1)
Fair Value   $ 66