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Long-Term Debt (Tables)
 6 Months Ended
Jun. 30, 2017
Debt Instrument [Line Items]  
Summary of long-term debt
The Company carries its long-term debt at face value, net of applicable discounts and capitalized debt issuance costs. Long-term debt consisted of the following:
 
 
June 30, 2017
 
December 31, 2016
 
 
(dollars in thousands)
5.00% Senior Notes (aggregate principal of $550,000 at June 30, 2017 and December 31, 2016)
 
$
541,256

 
$
540,465

5.25% Senior Notes (aggregate principal of $300,000 at June 30, 2017 and December 31, 2016)
 
295,869

 
295,591

Acquisition Line
 
32,509

 
—

Real Estate Related and Other Long-Term Debt
 
388,830

 
385,358

Capital lease obligations related to real estate, maturing in varying amounts through June 2034 with a weighted average interest rate of 9.9%
 
45,703

 
47,613

 
 
1,304,167

 
1,269,027

Less current maturities of long-term debt
 
40,322

 
56,218

 
 
$
1,263,845

 
$
1,212,809