Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2019

Long-term Purchase Commitment [Line Items]

Summary Of Purchase And Sale Commitments

We account for derivatives at fair value with the exception of commitments that have been designated as normal purchases and sales for which we do not record assets or liabilities related to these agreements until the product is purchased or sold. At June 30, 2019, such commitments included the following (in thousands):

	Volume (Barrels)	Value
Fixed price purchases	2,634	$	144,008
Fixed price sales	2,853	$	157,506
Floating price purchases	13,197	$	751,703
Floating price sales	16,001	$	797,728

Long-term Purchase Commitment [Table Text Block]

The approximate amount of future obligation is as follows (in thousands):

For year ending:
December 31, 2019	$	4,932
December 31, 2020	9,063
December 31, 2021	7,337
December 31, 2022	6,905
December 31, 2023	2,854
Thereafter	—
Total expected future payments	$	31,091

Recorded Unconditional Purchase Obligations [Table Text Block]

The approximate amount of future obligations is as follows (in thousands):

For year ending:
December 31, 2019	$	11,022
December 31, 2020	19,751
December 31, 2021	12,976
December 31, 2022	13,231
December 31, 2023	13,496
Thereafter	6,817
Total expected future payments	$	77,293