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Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2020
Fair Value Disclosures [Abstract]  
Schedule of assets and liabilities measured at fair value on a recurring basis
The following tables present information about our assets and liabilities that we measure at fair value on a recurring basis and indicate the level within the fair value hierarchy of the valuation techniques utilized to determine such fair value as of September 30, 2020 and December 31, 2019 (in thousands):
 Fair Value Measurements at September 30, 2020 Using:
  Quoted Prices in Significant
  Active Markets forSignificant OtherUnobservable
  Identical AssetsObservable InputsInputs
 Total(Level 1)(Level 2)(Level 3)
Assets:
Cash equivalents$2,750 $2,750 $— $— 
Corporate debt securities41,131 — 41,131 — 
U.S. treasury and government agency securities4,998 4,998 — 
Certificates of deposit15,300 — 15,300 — 
Commercial paper9,488 9,488 — 
Total assets$73,667 $2,750 $70,917 $— 
 
 Fair Value Measurements at December 31, 2019 Using:
  Quoted Prices in Significant
  Active Markets forSignificant OtherUnobservable
  Identical AssetsObservable InputsInputs
 Total(Level 1)(Level 2)(Level 3)
Assets:    
Cash equivalents$13,732 $13,732 $— $— 
Corporate debt securities54,492 — 54,492 — 
U.S. treasury and government agency securities2,750 — 2,750 — 
Certificates of deposit1,500 — 1,500 — 
Total assets$72,474 $13,732 $58,742 $— 
Liabilities:    
Contingent consideration - MuGard$17 $— $— $17 
Total liabilities$17 $— $— $17