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Long-Term Debt (Tables)
 9 Months Ended
Sep. 30, 2014
Debt Instrument [Line Items]  
Summary of long-term debt
The Company carries its long-term debt at face value, net of applicable discounts. Long-term debt consisted of the following:
 
 
September 30, 2014
 
December 31, 2013
 
 
(dollars in thousands)
5.00% Senior Notes
 
$
539,822

 
$
—

2.25% Convertible Senior Notes
 
—

 
160,334

3.00% Convertible Senior Notes
 
—

 
84,305

Acquisition Line
 
—

 
60,000

Real Estate Credit Facility
 
58,838

 
67,719

Other Real Estate Related and Long-Term Debt
 
316,703

 
279,167

Capital lease obligations related to real estate, maturing in varying amounts through June 2034 with a weighted average interest rate of 10.3%
 
57,655

 
47,553

 
 
973,018

 
699,078

Less current maturities of real estate credit facility and other long-term debt
 
34,519

 
35,389

 
 
$
938,499

 
$
663,689
3.00% Convertible Notes [Member]
  
Debt Instrument [Line Items]  
Contractual interest expense and the discount amortization
For the nine months ended September 30, 2014 and 2013, the contractual interest expense and the discount amortization, which are recorded as interest expense in the accompanying Consolidated Statements of Operations, were as follows:
 
 
Nine Months Ended September 30,
 
 
2014
 
2013
 
 
(dollars in thousands)
Year-to-date contractual interest expense
 
$
1,839

 
$
2,588

Year-to-date discount amortization (1) 
 
$
1,810

 
$
2,410

Effective interest rate of liability component
 
8.6
%
 
8.6
%
(1)    Represents the incremental impact of the accounting for convertible debt as primarily codified in ASC 470, Debt.