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Investments (Tables)
12 Months Ended
Dec. 31, 2023
Investments, All Other Investments [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis
Assets measured at fair value on a recurring basis were as follows (in thousands):

December 31, 2023
Quoted Price in Active Markets (Level 1)Significant Other Observable Inputs (Level 2)Significant Unobservable Inputs (Level 3)Total
Assets:
Obligations of U.S. Government and its agencies$— $277,358 $— $277,358 
Certificates of deposit— 986 — 986 
Total assets$— $278,344 $— $278,344 

December 31, 2022
Quoted Price in Active Markets (Level 1)Significant Other Observable Inputs (Level 2)Significant Unobservable Inputs (Level 3)Total
Assets:
Obligations of U.S. Government and its agencies$— $129,371 $— $129,371 
Corporate debt securities— 6,092 — 6,092 
Certificates of deposit— 2,157 — 2,157 
Total assets$— $137,620 $— $137,620 
Fair Value of the Company's Investments by Type
December 31, 2023
Amortized CostAccrued InterestGross Unrealized GainsGross Unrealized LossesEstimated Fair Value
Obligations of U.S. Government and its agencies$277,151 $121 $150 $(64)$277,358 
Certificates of deposit980 14 — (8)986 
Total investments$278,131 $135 $150 $(72)$278,344 

December 31, 2022
Amortized CostAccrued InterestGross Unrealized GainsGross Unrealized LossesEstimated Fair Value
Obligations of U.S. Government and its agencies$129,940 $427 $— $(996)$129,371 
Corporate debt securities6,093 37 — (38)6,092 
Certificates of deposit2,163 23 — (29)2,157 
Total investments$138,196 $487 $— $(1,063)$137,620 
Schedule of the Maturity of Investments
The following table summarizes the scheduled maturity for the Company’s investments at December 31, 2023 and 2022 (in thousands):
December 31,
 20232022
Maturing in one year or less$278,344 $119,543 
Maturing after one year through two years— 18,077 
Total investments$278,344 $137,620