Long-Term Debt (Details 3) $ in Thousands	Dec. 31, 2015 USD ($)
Debt Instrument [Line Items]
Scheduled principal payments in the next twelve months	$ 31
Scheduled principal payments, year two	26
Scheduled principal payments, year three	30,026
Scheduled principal payments, year four	0
Scheduled principal payments, year five	0
Scheduled principal payments, thereafter	1,050,000
Total long-term debt	1,080,083
Senior Notes [Member]
Debt Instrument [Line Items]
Scheduled principal payments in the next twelve months	0
Scheduled principal payments, year two	0
Scheduled principal payments, year three	0
Scheduled principal payments, year four	0
Scheduled principal payments, year five	0
Scheduled principal payments, thereafter	300,000
Total long-term debt	300,000
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Scheduled principal payments in the next twelve months	31
Scheduled principal payments, year two	26
Scheduled principal payments, year three	26
Scheduled principal payments, year four	0
Scheduled principal payments, year five	0
Scheduled principal payments, thereafter	0
Total long-term debt	83
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Scheduled principal payments in the next twelve months	0
Scheduled principal payments, year two	0
Scheduled principal payments, year three	30,000
Scheduled principal payments, year four	0
Scheduled principal payments, year five	0
Scheduled principal payments, thereafter	0
Total long-term debt	30,000
Rose Rock Midstream L P [Member] | Senior Notes [Member] | Rose Rock Notes due 2022 [Member]
Debt Instrument [Line Items]
Scheduled principal payments in the next twelve months	0
Scheduled principal payments, year two	0
Scheduled principal payments, year three	0
Scheduled principal payments, year four	0
Scheduled principal payments, year five	0
Scheduled principal payments, thereafter	400,000
Total long-term debt	400,000
Rose Rock Midstream L P [Member] | Senior Notes [Member] | Rose Rock Notes due 2023 [Member]
Debt Instrument [Line Items]
Scheduled principal payments in the next twelve months	0
Scheduled principal payments, year two	0
Scheduled principal payments, year three	0
Scheduled principal payments, year four	0
Scheduled principal payments, year five	0
Scheduled principal payments, thereafter	350,000
Total long-term debt	350,000
Rose Rock Midstream L P [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Scheduled principal payments in the next twelve months	0
Scheduled principal payments, year two	0
Scheduled principal payments, year three	0
Scheduled principal payments, year four	0
Scheduled principal payments, year five	0
Scheduled principal payments, thereafter	0
Total long-term debt	0
SemMexico [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Scheduled principal payments in the next twelve months	0
Scheduled principal payments, year two	0
Scheduled principal payments, year three	0
Scheduled principal payments, year four	0
Scheduled principal payments, year five	0
Scheduled principal payments, thereafter	0
Total long-term debt	$ 0