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Long-Term Debt (Tables)
9 Months Ended
Sep. 30, 2018
Debt Disclosure [Abstract]  
Schedule of Long-term Debt Instruments
The following table details the Company’s long-term debt at the respective principal amounts, net of unamortized debt issuance costs (in thousands):

 
September 30,
 
December 31,
 
2018
 
2017
 
2017
5.375% senior unsecured notes due 2024 (1)
$
295,722

 
$
294,961

 
$
295,243

Revolving unsecured credit facility, maturing 2022
305,000

 
140,000

 
107,000

Total long-term debt
$
600,722

 
$
434,961

 
$
402,243


(1)
As of September 30, 2018, September 30, 2017 and December 31, 2017, deferred debt issuance costs of $4.3 million, $5.0 million and $4.8 million, respectively, are included as a direct deduction from the carrying amount of the senior unsecured notes due 2024 in the accompanying condensed consolidated balance sheets.