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Debt (Tables)
6 Months Ended
Jun. 30, 2018
Debt Disclosure [Abstract]  
Summary of Outstanding Debt
Debt outstanding at June 30, 2018 and December 31, 2017 consisted of the following:
 
June 30,
2018
 
December 31,
2017
Long-Term Debt:
 
 
 
Senior unsecured notes
$
300,000

 
$
300,000

Credit facility borrowings
62,000

 
80,000

Capital lease obligations
3,110

 
3,279

Total Long-Term Debt
365,110

 
383,279

Less: unamortized debt issuance costs
(5,442
)
 
(6,440
)
Less: current maturities of credit facility borrowings, net of debt issuance costs(1)
(29,611
)
 
(29,413
)
Less: current maturities of capital lease obligations(1)
(1,358
)
 
(1,470
)
Long-term portion
$
328,699

 
$
345,956


(1) 
Current maturities of long-term debt include $30,000 of current maturities, less $389 of unamortized debt issuance costs, under our 2017 Credit Agreement and $1,358 of current maturities of capital lease obligations.