Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Assets Measured on Recurring Basis (Details)

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Fair Value Measurements - Assets Measured on Recurring Basis (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2023
Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investment $ 6,500  
Fair Value, Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investment 6,489 $ 10,283
Total gains (losses) (3,794) (1,570)
Quoted prices in active market (Level 1) | Fair Value, Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investment 6,489 10,283
Significant other observable inputs (Level 2) | Fair Value, Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investment 0 0
Significant other unobservable inputs (Level 3) | Fair Value, Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investment $ 0 $ 0