XML 44 R24.htm IDEA: XBRL DOCUMENT v3.10.0.1
FAIR VALUE MEASUREMENTS (Tables)
 6 Months Ended
Jun. 30, 2018
Fair Value Disclosures [Abstract]  
Assets Measured and Carried at Fair Value

The tables below present information about the Company’s financial assets that are measured and carried at fair value and indicate the level within the fair value hierarchy of valuation techniques it utilizes to determine such fair value: 

 

 

 

Fair Value Measurement as of June 30, 2018

 

 

 

Total

 

 

Level 1

 

 

Level 2

 

 

Level 3

 

 

 

(in thousands)

 

Assets

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Money market funds

 

$

211,197

 

 

$

211,197

 

 

$

—

 

 

$

—

 

Commercial paper

 

 

189,622

 

 

 

—

 

 

 

189,622

 

 

 

—

 

Government and government agency bonds

 

 

278,512

 

 

 

278,512

 

 

 

—

 

 

 

—

 

Corporate bonds

 

 

85,594

 

 

 

85,594

 

 

 

—

 

 

 

—

 

Certificates of deposit

 

$

1,001

 

 

 

1,001

 

 

 

—

 

 

 

—

 

Total

 

$

765,926

 

 

$

576,304

 

 

$

189,622

 

 

$

—

 

 

 

 

Fair Value Measurement as of December 31, 2017

 

 

 

Total

 

 

Level 1

 

 

Level 2

 

 

Level 3

 

 

 

(in thousands)

 

Assets

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Money market funds

 

$

352,370

 

 

$

352,370

 

 

$

—

 

 

$

—

 

Commercial paper

 

 

133,368

 

 

 

—

 

 

 

133,368

 

 

 

—

 

Government and government agency bonds

 

 

294,717

 

 

 

284,745

 

 

 

9,972

 

 

 

—

 

Corporate bonds

 

 

127,956

 

 

 

127,956

 

 

 

—

 

 

 

—

 

Certificates of deposit

 

 

648

 

 

 

648

 

 

 

—

 

 

 

—

 

Total

 

$

909,059

 

 

$

765,719

 

 

$

143,340

 

 

$

—