Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2014

Debt Instrument [Line Items]

Summary of Long-Term Debt

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

	December 31, 2014		December 31, 2013
SemGroup 7.50% senior unsecured notes	$	300,000	$	300,000
SemGroup corporate revolving credit facility	35,000		70,000
Rose Rock 5.625% senior unsecured notes	400,000		—
Rose Rock credit facility	32,000		245,000
SemMexico credit facility	—		—
Capital leases	132		125
Total long-term debt	767,132		615,125
less: current portion of long-term debt	40		37
Noncurrent portion of long-term debt	$	767,092	$	615,088

Scheduled Principal Payments of Debt

The following table summarizes the scheduled principal payments as of December 31, 2014 (in thousands). As described above, our debt agreements require accelerated principal payments under certain circumstances. As a result, principal payments may occur earlier than shown in the table below.

	Senior Unsecured Notes		Rose Rock Notes		SemGroup Facility		Rose Rock Facility		SemMexico Facility		Capital Leases		Total
For the year ended:
December 31, 2015	$	—	$	—	$	—	$	—	$	—	$	40	$	40
December 31, 2016	—		—		—		—		—		40		40
December 31, 2017	—		—		—		—		—		26		26
December 31, 2018	—		—		35,000		32,000		—		26		67,026
December 31, 2019	—		—		—		—		—		—		—
Thereafter	300,000		400,000		—		—		—		—		700,000
Total	$	300,000	$	400,000	$	35,000	$	32,000	$	—	$	132	$	767,132

Senior Notes [Member] | Corporate Segment [Member]

Debt Instrument [Line Items]

Early Redemption Premium Percentages [Table Text Block]

From and after June 15, 2016, the Company may redeem the Notes, in whole or in part, at the redemption prices (expressed as percentages of principal amount) set forth below, plus accrued and unpaid interest, if redeemed during the twelve-month period beginning on June 15 of each of the years indicated below:

Year	Percentage
2016	105.625%
2017	103.750%
2018	101.875%
2019 and thereafter	100.000%

Rose Rock Midstream L P [Member] | Senior Notes [Member]

Debt Instrument [Line Items]

Early Redemption Premium Percentages [Table Text Block]

From and after July 15, 2017, Rose Rock may redeem the Rose Rock Notes, in whole or in part, at the redemption prices (expressed as percentages of principal amount) set forth below, plus accrued and unpaid interest, if redeemed during the twelve-month period beginning on July 15 of each of the years indicated below:

Year	Percentage
2017	104.219%
2018	102.813%
2019	101.406%
2020 and thereafter	100.000%