Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Marketable Securities (Details)

v3.23.1
Summary of Significant Accounting Policies - Marketable Securities (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Debt Securities, Available-for-Sale [Line Items]    
Marketable investments $ 83,706 $ 112,523
Corporate Bonds    
Debt Securities, Available-for-Sale [Line Items]    
Marketable investments 38,244 47,335
U.S. Treasury    
Debt Securities, Available-for-Sale [Line Items]    
Marketable investments 19,556 24,153
Mortgage-Backed    
Debt Securities, Available-for-Sale [Line Items]    
Marketable investments 5,374 7,361
U.S. agency and government sponsored securities    
Debt Securities, Available-for-Sale [Line Items]    
Marketable investments 9,560 14,588
U.S. states and municipalities    
Debt Securities, Available-for-Sale [Line Items]    
Marketable investments 10,906 11,682
Asset-Backed    
Debt Securities, Available-for-Sale [Line Items]    
Marketable investments 66 $ 6,406
Level 1    
Debt Securities, Available-for-Sale [Line Items]    
Marketable investments 54,021  
Level 1 | Corporate Bonds    
Debt Securities, Available-for-Sale [Line Items]    
Marketable investments 34,465  
Level 1 | U.S. Treasury    
Debt Securities, Available-for-Sale [Line Items]    
Marketable investments 19,556  
Level 1 | Mortgage-Backed    
Debt Securities, Available-for-Sale [Line Items]    
Marketable investments 0  
Level 1 | U.S. agency and government sponsored securities    
Debt Securities, Available-for-Sale [Line Items]    
Marketable investments 0  
Level 1 | U.S. states and municipalities    
Debt Securities, Available-for-Sale [Line Items]    
Marketable investments 0  
Level 1 | Asset-Backed    
Debt Securities, Available-for-Sale [Line Items]    
Marketable investments 0  
Level 2    
Debt Securities, Available-for-Sale [Line Items]    
Marketable investments 29,685  
Level 2 | Corporate Bonds    
Debt Securities, Available-for-Sale [Line Items]    
Marketable investments 3,779  
Level 2 | U.S. Treasury    
Debt Securities, Available-for-Sale [Line Items]    
Marketable investments 0  
Level 2 | Mortgage-Backed    
Debt Securities, Available-for-Sale [Line Items]    
Marketable investments 5,374  
Level 2 | U.S. agency and government sponsored securities    
Debt Securities, Available-for-Sale [Line Items]    
Marketable investments 9,560  
Level 2 | U.S. states and municipalities    
Debt Securities, Available-for-Sale [Line Items]    
Marketable investments 10,906  
Level 2 | Asset-Backed    
Debt Securities, Available-for-Sale [Line Items]    
Marketable investments $ 66