Segment Data (Tables)

9 Months Ended

Sep. 30, 2016

Segment Reporting Information [Line Items]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

The following is a summary of business segment operating performance as measured by contribution margin for the periods indicated (in thousands):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2016		2015		2016			2015
Pipelines and Transportation
Net Sales:
Affiliate	$	25,238	$	26,358	$	77,680		$	76,436
Third-Party	3,388		7,581		15,739			22,239
Total Pipelines and Transportation	28,626		33,939		93,419			98,675
Operating costs and expenses:
Cost of goods sold	4,811		5,211		14,401			15,126
Operating expenses	7,678		8,368		22,317			23,031
Segment contribution margin	$	16,137	$	20,360	$	56,701		$	60,518
Capital spending (excluding business combinations)	$	2,613	$	2,872	$	4,037		$	12,627
Wholesale Marketing and Terminalling
Net Sales:
Affiliate	$	11,122	$	15,466	$	34,134		$	37,539
Third-Party	67,722		115,687		195,826			344,524
Total Wholesale Marketing and Terminalling	78,844		131,153		229,960			382,063
Operating costs and expenses:
Cost of goods sold	68,716		119,174		198,980			350,160
Operating expenses	1,573		3,248		6,128			10,160
Segment contribution margin	$	8,555	$	8,731	$	24,852		$	21,743
Capital spending (excluding business combinations)	$	464	$	1,323	$	972		$	5,103
Consolidated
Net Sales:
Affiliate	$	36,360	$	41,824	$	111,814		$	113,975
Third-Party	71,110		123,268		211,565			366,763
Net sales	107,470		165,092		323,379			480,738
Operating costs and expenses:
Cost of goods sold	73,527		124,385		213,381			365,286
Operating expenses	9,251		11,616		28,445			33,191
Contribution margin	24,692		29,091		81,553			82,261
General and administrative expenses	2,307		2,703		7,918			9,094
Depreciation and amortization	5,356		4,541		15,164			13,785
Loss (gain) on asset disposals	28		—		(16		)	(18		)
Operating income	$	17,001	$	21,847	$	58,487		$	59,400
Capital spending (excluding business combinations)	$	3,077	$	4,195	$	5,009		$	17,730

The following table summarizes the total assets for each segment as of September 30, 2016 and December 31, 2015 (in thousands).

	September 30, 2016		December 31, 2015
Pipelines and Transportation	$	327,757	$	283,553
Wholesale Marketing and Terminalling	65,413		91,735
Total Assets	$	393,170	$	375,288

Property, plant and equipment and accumulated depreciation as of September 30, 2016 and depreciation expense by reporting segment for the three and nine months ended September 30, 2016 were as follows (in thousands):

	Pipelines and Transportation			Wholesale Marketing and Terminalling			Consolidated
Property, plant and equipment	$	274,184		$	56,947		$	331,131
Less: accumulated depreciation	(62,803		)	(23,232		)	(86,035		)
Property, plant and equipment, net	$	211,381		$	33,715		$	245,096
Depreciation expense for the three months ended September 30, 2016	$	4,225		$	866		$	5,091
Depreciation expense for the nine months ended September 30, 2016	$	11,865		$	2,502		$	14,367