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Fair Value of Financial Instruments (Tables)
3 Months Ended
Mar. 31, 2023
Fair Value Disclosures [Abstract]  
Summary of the valuation of cash equivalents and marketable securities by pricing levels
The following table presents the financial instruments and liabilities that are carried at fair value and summarizes their valuation by the respective pricing levels as of March 31, 2023 and December 31, 2022:
 As of March 31, 2023
(In thousands)Total
Quoted Market Prices in Active Markets
 (Level 1)
Significant Other Observable Inputs
 (Level 2)
Significant Unobservable Inputs
 (Level 3)
Assets carried at fair value
Money market funds$13,089 $13,089 $— $— 
Time deposits9,646 — 9,646 — 
U.S. Government bonds and notes96,250 — 96,250 — 
Corporate notes, bonds and commercial paper90,360 — 90,360 — 
Total assets carried at fair value$209,345 $13,089 $196,256 $— 
Liabilities carried at fair value
Earn-out consideration related to PLDA acquisition$21,700 $— $— $21,700 
Total liabilities carried at fair value$21,700 $— $— $21,700 
 As of December 31, 2022
(In thousands)Total
Quoted Market Prices in Active Markets
 (Level 1)
Significant Other Observable Inputs
 (Level 2)
Significant Unobservable Inputs
 (Level 3)
Assets carried at fair value
Money market funds$15,763 $15,763 $— $— 
U.S. Government bonds and notes96,371 — 96,371 — 
Corporate notes, bonds and commercial paper106,355 — 106,355 — 
Total available-for-sale securities$218,489 $15,763 $202,726 $— 
Liabilities carried at fair value
Earn-out consideration related to PLDA acquisition$14,800 $— $— $14,800 
Total liabilities carried at fair value$14,800 $— $— $14,800 
Fair value, liabilities measured on recurring basis, unobservable input reconciliation The following table presents additional information about liabilities measured at fair value for which the Company utilizes Level 3 inputs to determine fair value, as of March 31, 2023 and 2022.
Three Months Ended
March 31,
(In thousands)20232022
Balance as of beginning of period$14,800 $16,900 
Change in fair value of earn-out liability due to remeasurement6,900 1,200 
Balance as of end of period$21,700 $18,100 
Financial instruments not carried at fair value but requiring fair value disclosure
The following table presents the financial instruments that are not carried at fair value but require fair value disclosure as of March 31, 2023 and December 31, 2022:
 As of March 31, 2023As of December 31, 2022
(In thousands)
Face
 Value
Carrying
 Value
Fair Value
Face
 Value
Carrying
 Value
Fair Value
1.375% Convertible Senior Notes due 2023 (the “2023 Notes”)$— $— $— $10,381 $10,378 $19,625