XML 43 R32.htm IDEA: XBRL DOCUMENT v3.21.2
Marketable Securities (Tables)
 6 Months Ended
Jun. 30, 2021
Debt Securities, Available-for-sale, Sale [Abstract]  
Cash equivalents and marketable securities classified as available-for-sale Total cash, cash equivalents and marketable securities are summarized as follows:
 As of June 30, 2021
(In thousands)Fair Value
Amortized
 Cost
Gross
 Unrealized
 Gains
Gross
 Unrealized
 Losses
Weighted
 Rate of
 Return
Money market funds$19,262 $19,262 $— $— 0.03 %
U.S. Government bonds and notes64,103 64,118 1 (16)0.08 %
Corporate notes, bonds and commercial paper208,279 208,407 12 (140)0.20 %
Total cash equivalents and marketable securities291,644 291,787 13 (156) 
Cash185,469 185,469 — —  
Total cash, cash equivalents and marketable securities$477,113 $477,256 $13 $(156) 
 As of December 31, 2020
(In thousands)Fair Value
Amortized
 Cost
Gross
 Unrealized
 Gains
Gross
 Unrealized
 Losses
Weighted
 Rate of
 Return
Money market funds$18,162 $18,162 $— $— 0.01 %
U.S. Government bonds and notes169,633 169,670 3 (40)0.12 %
Corporate notes, bonds and commercial paper253,391 253,412 61 (82)0.20 %
Total cash equivalents and marketable securities441,186 441,244 64 (122) 
Cash61,463 61,463 — —  
Total cash, cash equivalents and marketable securities$502,649 $502,707 $64 $(122) 
Available-for-sale securities reported at fair value
Available-for-sale securities are reported at fair value on the balance sheets and classified along with cash as follows:
As of
(In thousands)June 30, 2021December 31, 2020
Cash equivalents$19,262 $67,504 
Short-term marketable securities272,382 373,682 
Total cash equivalents and marketable securities291,644 441,186 
Cash185,469 61,463 
Total cash, cash equivalents and marketable securities$477,113 $502,649 
Estimated fair value of cash equivalents and marketable securities classified by the length of time that the securities have been in a continuous unrealized loss position
The estimated fair value and gross unrealized losses of cash equivalents and marketable securities classified by the length of time that the securities have been in a continuous unrealized loss position at June 30, 2021 and December 31, 2020 are as follows:
 Fair ValueGross Unrealized Losses
(In thousands)June 30, 2021December 31, 2020June 30, 2021December 31, 2020
Less than 12 months    
U.S. Government bonds and notes$54,628 $70,548 $(16)$(40)
Corporate notes, bonds and commercial paper149,777 181,349 (140)(82)
Total cash equivalents and marketable securities in a continuous unrealized loss position$204,405 $251,897 $(156)$(122)
Contractual maturities of cash equivalents (excluding money market funds which have no maturity) and marketable securities
The contractual maturities of cash equivalents (excluding money market funds which have no maturity) and marketable securities are summarized as follows:
(In thousands)June 30, 2021
Due less than one year$196,592 
Due from one year through three years75,790 
Total$272,382