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Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2018
Fair Value Disclosures [Abstract]  
Fair Values of Financial Assets Measured on Recurring Basis

The fair values of the Company’s financial assets that are measured on a recurring basis are as follows (in thousands):

 

 

 

March 31, 2018

 

 

 

Level 1

 

 

Level 2

 

 

Level 3

 

 

Total

 

Corporate bonds

 

$

 

 

$

36,437

 

 

$

 

 

$

36,437

 

Bond and mutual funds

 

 

18,631

 

 

 

 

 

 

 

 

 

18,631

 

Equity investments

 

 

199

 

 

 

 

 

 

 

 

 

199

 

Money market funds

 

 

589,448

 

 

 

 

 

 

 

 

 

589,448

 

Total

 

$

608,278

 

 

$

36,437

 

 

$

 

 

$

644,715

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

December 31, 2017

 

 

 

Level 1

 

 

Level 2

 

 

Level 3

 

 

Total

 

Corporate bonds

 

$

 

 

$

53,943

 

 

$

 

 

$

53,943

 

Bond and mutual funds

 

 

18,402

 

 

 

 

 

 

 

 

 

18,402

 

Equity investments

 

 

221

 

 

 

 

 

 

 

 

 

221

 

Money market funds

 

 

569,942

 

 

 

 

 

 

 

 

 

569,942

 

Total

 

$

588,565

 

 

$

53,943

 

 

$

 

 

$

642,508

 

 

Fair Values of Financial Liabilities Carried at Historical Cost

The fair values of the Company’s financial liabilities that are carried at historical cost are as follows (in thousands): 

 

 

 

March 31, 2018

 

 

 

Level 1

 

 

Level 2

 

 

Level 3

 

 

Total

 

Lease financing obligations

 

$

 

 

$

 

 

$

98,389

 

 

$

98,389

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

December 31, 2017

 

 

 

Level 1

 

 

Level 2

 

 

Level 3

 

 

Total

 

Lease financing obligations

 

$

 

 

$

 

 

$

98,476

 

 

$

98,476