Long-Term Debt (Tables)

6 Months Ended

Jun. 30, 2017

Debt Instrument [Line Items]

Summary of Long-Term Debt

Our long-term debt consisted of the following (in thousands):

	June 30, 2017			December 31, 2016
7.50% senior unsecured notes due 2021	$	—		$	300,000
Unamortized debt issuance costs on 2021 notes	—			(3,708		)
7.50% senior unsecured notes due 2021, net	—			296,292
5.625% senior unsecured notes due 2022	400,000			400,000
Unamortized debt issuance costs on 2022 notes	(5,376		)	(5,909		)
5.625% senior unsecured notes due 2022, net	394,624			394,091
5.625% senior unsecured notes due 2023	350,000			350,000
Unamortized discount on 2023 notes	(4,599		)	(4,894		)
Unamortized debt issuance costs on 2023 notes	(4,262		)	(4,596		)
5.625% senior unsecured notes due 2023, net	341,139			340,510
6.375% senior unsecured notes due 2025	325,000			—
Unamortized discount on 2025 notes	(4,843		)	—
Unamortized debt issuance costs on 2025 notes	(4,687		)	—
6.375% senior unsecured notes due 2025, net	315,470			—
SemGroup corporate revolving credit facility	164,000			20,000
SemMexico revolving credit facility	—			—
Capital leases	39			51
Total long-term debt, net	1,215,272			1,050,944
Less: current portion of long-term debt	28			26
Noncurrent portion of long-term debt, net	$	1,215,244		$	1,050,918

Debt Instrument, Redemption [Line Items]

Debt Instrument Redemption [Table Text Block]

On or after March 15, 2020, we may redeem the 2025 Notes, in whole or in part, at the following redemption prices (expressed as a percentage of principal amount), plus accrued and unpaid interest thereon to, but not including, the redemption date if redeemed during the twelve month period beginning on March 15 of the years indicated below:

Year	Percentage
2020	103.188%
2021	101.594%
2022 and thereafter	100.000%