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Cash Equivalents and Investments (Tables)
3 Months Ended
Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract]  
Schedule of Investments

Investments held are all classified as current and at March 31, 2023 and December 31, 2022 are summarized as follows (in thousands):

 

 

March 31, 2023

 

 

December 31, 2022

 

Corporate securities

 

$

62,730

 

 

$

61,385

 

Municipal debt securities

 

 

13,552

 

 

 

14,377

 

U.S. Treasury securities

 

 

10,255

 

 

 

10,205

 

Certificates of deposit

 

 

4,594

 

 

 

3,710

 

Federal home loan securities

 

 

5,578

 

 

 

3,562

 

 

 

$

96,709

 

 

$

93,239