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Investments (Tables)
 3 Months Ended
Mar. 31, 2022
Investments, Debt and Equity Securities [Abstract]  
Investments
(in thousands)March 31, 2022December 31, 2021
Cashable Guaranteed Investment Certificate$3,128 $3,140 
Corporate Bond60,390 21,820 
Commercial Paper152,295 206,724 
Treasury Bill19,530 2,494 
Treasury Bond50,867 — 
Total short-term investments$286,210 $234,178