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Marketable Securities (Tables)
 3 Months Ended
Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract]  
Summary of Available-for-Sale Marketable Securities
The following is a summary of the Company’s available-for-sale marketable securities as of March 31, 2020, which all have contractual maturities of less than two years:

 
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Fair
Market
Value
(in thousands)
 
 
 
U.S. Treasury and government agencies
$
87,014

 
$
558

 
$
—

 
$
87,572

Corporate debt
122,964

 
572

 
(110
)
 
123,426

Asset-backed securities
36,386

 
56

 
(64
)
 
36,378

Total marketable securities
$
246,364

 
$
1,186

 
$
(174
)
 
$
247,376

The following is a summary of the Company’s available-for-sale marketable securities as of December 31, 2019, which all have contractual maturities of less than two years:

 
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Fair
Market
Value
(in thousands)
 
 
 
U.S. Treasury and government agencies
$
88,535

 
$
68

 
$
(2
)
 
$
88,601

Corporate debt
129,860

 
196

 
(1
)
 
130,055

Asset-backed securities
48,355

 
49

 
(3
)
 
48,401

Total marketable securities
$
266,750

 
$
313

 
$
(6
)
 
$
267,057