Quarterly report pursuant to Section 13 or 15(d)

Cash, Cash Equivalents and Investments (Tables)

v3.8.0.1
Cash, Cash Equivalents and Investments (Tables)
 3 Months Ended
Mar. 31, 2018
Cash and Cash Equivalents [Abstract]  
Schedule of cash, cash equivalents and investments Cash, cash equivalents and investments consisted of the following:
 
 
As of 
 December 31, 
 2017
 
As of 
 March 31, 
 2018
 
(in thousands)
Cash and cash equivalents
 

 
 
Cash
$
146,294

 
$
231,740

Money market funds
353,303

 
105,865

Commercial paper
—

 
117,318

Total cash and cash equivalents
$
499,597

 
$
454,923

Short-term investments
 

 
 

Commercial paper
$
—

 
$
77,065

Corporate debt securities
1,250

 
12,417

Total short-term investments
$
1,250

 
$
89,482

Cash, cash equivalents and investments
$
500,847

 
$
544,405

Summary of available-for-sale securities' adjusted cost, gross unrealized gains, gross unrealized losses and fair value by significant investment category The following table summarizes our available-for-sale securities’ adjusted cost, gross unrealized gains, gross unrealized losses and fair value by significant investment category as of March 31, 2018. As of December 31, 2017, the adjusted cost and fair value by significant investment category are the same.
 

 
As of March 31, 2018
 
Adjusted
Cost
 
Unrealized
Losses
 
Fair
Value
 
(in thousands)
Money market funds
$
105,865

 
$
—

 
$
105,865

Commercial paper
194,384

 
(1
)
 
194,383

Corporate debt securities
12,432

 
(15
)
 
12,417

Total cash equivalents and marketable securities
$
312,681

 
$
(16
)
 
$
312,665

Summary of available-for-sale securities' fair value and gross unrealized losses The following table summarizes our available-for-sale securities’ fair value and gross unrealized losses aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position as of March 31, 2018. We had no securities that had been in a continuous unrealized loss position for greater than 12 months as of December 31, 2017.

 
As of March 31, 2018
 
Twelve Months or Less
 
Total
 
Fair
Value
 
Gross Unrealized Losses
 
Fair
Value
 
Gross Unrealized Losses
 
(in thousands)
Commercial paper
$
4,981

 
$
(1
)
 
$
4,981

 
$
(1
)
Corporate debt securities
12,417

 
(15
)
 
12,417

 
(15
)
Total
$
17,398

 
$
(16
)
 
$
17,398

 
$
(16
)