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Long-Term Debt (Tables)
 6 Months Ended
Jun. 30, 2016
Debt Disclosure [Abstract]  
Schedule of long-term debt
Long-term debt consisted of the following (in thousands):
 
 
June 30, 2016
 
December 31, 2015
Revolving credit facility due November 2020
$
152,500

 
$
166,500

 
 
 
 
Partnership’s revolving credit facility due May 2018
578,500

 
580,500

 
 
 
 
Partnership’s term loan facility due May 2018
150,000

 
150,000

Less: Deferred financing costs, net of amortization
(477
)
 
(602
)
 
149,523

 
149,398

 
 
 
 
Partnership’s 6% senior notes due April 2021
350,000

 
350,000

Less: Debt discount, net of amortization
(3,543
)
 
(3,862
)
Less: Deferred financing costs, net of amortization
(4,882
)
 
(5,396
)
 
341,575

 
340,742

 
 
 
 
Partnership’s 6% senior notes due October 2022
350,000

 
350,000

Less: Debt discount, net of amortization
(4,379
)
 
(4,673
)
Less: Deferred financing costs, net of amortization
(5,177
)
 
(5,585
)
 
340,444

 
339,742

 
 
 
 
Long-term debt
$
1,562,542

 
$
1,576,882