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Debt (Tables)
12 Months Ended
Dec. 31, 2017
Debt Disclosure [Abstract]  
Schedule of Debt
As of December 31, the Company’s indebtedness was comprised as follows:
 
2017
 
2016
Revolving credit agreement
$

 
$
54,425

6.50% Notes due 2024
900,000

 
900,000

Debt issuance costs
(17,587
)
 
(18,420
)
  
882,413

 
936,005

Obligations under capital leases
706

 
431

  
883,119

 
936,436

Less: Current portion of long-term debt
313

 
228

  
$
882,806

 
$
936,208

Schedule Of Future Principal Repayments Of Long Term Debt Including Capital Lease Obligations
Future principal repayments, including capital lease obligations, for the years ended December 31, and in aggregate, are as follows:
 
 
 
Period
 
Amount
2018
 
$
313

2019
 
320

2020
 
68

2021
 
5

2022
 

2023 and thereafter
 
900,000

  
 
$
900,706

Schedule of Future Minimum Lease Payments for Capital Leases
Future minimum capital lease payments for the years ended December 31 and in aggregate, are as follows:
Period
 
Amount
2018
 
$
313

2019
 
320

2020
 
68

2021
 
5

2022
 

2023 and thereafter
 

  
 
706

Less: imputed interest
 
(59
)
 
 
647

Less: current portion
 
(313
)
  
 
$
334