Disposals of Long-Lived Assets (Tables)

12 Months Ended

Dec. 31, 2017

Disposals And Impairments Of Long-Lived Assets [Abstract]

Disposal Groups, Including Discontinued Operations [Table Text Block]

The following amounts are included in "loss on disposal or impairment, net" on our consolidated statement of operations and comprehensive income (loss) for the year ended December 31, 2017 (in thousands):

	Segment	Loss/(Gain)
Write-down of Mexican asphalt business to net realizable value	Corporate and Other	$	13,511
Write-down U.K. operations to net realizable value	Corporate and Other	76,661
Sherman natural gas gathering and processing asset impairment	SemGas	30,985
Crude oil trucking goodwill impairment (Note 11)	Crude Transportation	26,628
Crude oil trucking intangible asset impairment (Note 11)	Crude Transportation	12,087
Gain on sale of Glass Mountain (Note 6)	Crude Transportation	(150,266		)
Other		3,727
Loss on disposal or impairment, net		$	13,333