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Investments
 3 Months Ended
Mar. 31, 2022
Investments, Debt and Equity Securities [Abstract]  
Investments Investments
Short-term investments as of March 31, 2022, consist of the following (in thousands):
 
Adjusted
Cost		Unrealized
Losses		Fair
Value
Corporate bonds$136,337 $(129)$136,208 
Government bonds4,977 (14)4,963 
Asset-backed bonds13,667 (69)13,598 
Total short-term investments$154,981 $(212)$154,769 
 
Short-term investments as of December 31, 2021, consist of the following (in thousands):

Adjusted
Cost		Unrealized
Losses		Fair
Value
Corporate bonds$146,032 $(30)$146,002 
Asset-backed bonds29,507 (19)29,488 
Total short-term investments$175,539 $(49)$175,490