Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS Fair Value Measurements (Tables)

v3.8.0.1
FAIR VALUE MEASUREMENTS Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2018
Fair Value Disclosures [Abstract]  
Fair Value of Assets Measured on a Recurring Basis
The following table shows the fair value of the Company’s significant financial assets that are required to be measured at fair value on a recurring basis, which are classified on the balance sheets as cash and cash equivalents:
 
Fair Value Measurements at
 
March 31, 2018
 
December 31, 2017
 
Level 1
 
(in thousands)
Assets:
 
 
 
       Cash equivalents
$
485,413

 
$
58,063

Estimated Fair Values of Debt
The following table presents the estimated fair values of the Company’s senior notes and convertible senior notes at March 31, 2018 and December 31, 2017:


Estimated Fair Value at
 
March 31, 2018
 
December 31, 2017
 
Level 2
 
(in thousands)
4.875% Senior Notes due 2024
$
561,459

 
$
592,325

5.625% Senior Notes due 2026
$
304,389

 
$

5.375% Senior Notes due 2022

$
255,735

 
$
259,233

2.5% Convertible Senior Notes due 2023
$
556,226

 
$

2.5% Convertible Senior Notes due 2019
$
66,052

 
$
310,635