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Investments (Tables)
 3 Months Ended
Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract]  
Schedule of Available-for-Sale Investments
The following tables summarize the Company’s debt securities available-for-sale investments at March 31, 2020 and December 31, 2019 (in thousands):

March 31, 2020
Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair Value
Certificates of deposit$6,381  $28  $—  $6,409  
U.S. Treasury securities20,583  183  —  20,766  
U.S. Agency securities6,527  21  —  6,548  
Commercial paper1,996  1  —  1,997  
Corporate notes and bonds16,728  26  (14) 16,740  
Total$52,215  $259  $(14) $52,460  

December 31, 2019
Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair Value
Certificates of deposit$5,646  $17  $—  $5,663  
U.S. Treasury securities12,564  16  (1) 12,579  
U.S. Agency securities4,002  —  (4) 3,998  
Commercial paper2,492  —  (1) 2,491  
Corporate notes and bonds22,711  6  (11) 22,706  
Total$47,415  $39  $(17) $47,437  
Schedule of Available-For-Sale Investment Maturities
The following table summarizes the maturities of the Company’s debt securities available-for-sale investments at March 31, 2020 and December 31, 2019 (in thousands):

March 31, 2020December 31, 2019
Amortized
Cost		Fair ValueAmortized
Cost		Fair Value
Due in less than 1 year$51,968  $52,213  $43,627  $43,650  
Due in 1-3 years247  247  3,788  3,787  
$52,215  $52,460  $47,415  $47,437