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Long-Term Debt (Tables)
 6 Months Ended
Jun. 30, 2016
Debt Instrument [Line Items]  
Summary of Long-Term Debt
Our long-term debt consisted of the following (in thousands):
 
June 30,
2016
 
December 31,
2015
SemGroup 7.50% senior unsecured notes due 2021
$
300,000

 
$
300,000

Unamortized debt issuance costs on SemGroup notes
(4,125
)
 
(4,540
)
SemGroup 7.50% senior unsecured notes due 2021, net
295,875

 
295,460




 


Rose Rock 5.625% senior unsecured notes due 2022
400,000

 
400,000

Unamortized debt issuance costs on Rose Rock 2022 notes
(6,442
)
 
(6,975
)
Rose Rock 5.625% senior unsecured notes due 2022, net
393,558

 
393,025

 
 
 
 
Rose Rock 5.625% senior unsecured notes due 2023
350,000

 
350,000

Unamortized discount on Rose Rock 2023 notes
(5,178
)
 
(5,455
)
Unamortized debt issuance costs on Rose Rock 2023 notes
(4,931
)
 
(5,266
)
Rose Rock 5.625% senior unsecured notes due 2023, net
339,891

 
339,279

 
 
 
 
SemGroup corporate revolving credit facility
—

 
30,000

Rose Rock revolving credit facility
41,000

 
—

SemMexico revolving credit facility
—

 
—

Capital leases
64

 
83

Total long-term debt, net
1,070,388

 
1,057,847

Less: current portion of long-term debt
25

 
31

Noncurrent portion of long-term debt, net
$
1,070,363

 
$
1,057,816