Note 4 - Revenue (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]

	Revenue from
	Contracts with		Revenue from
	Customers(1)		Leases
2020	$	31,879	$	56,114
2021		30,209		55,017
2022		23,198		44,262
2023		17,605		35,289
2024		8,040		18,141
Thereafter		6,719		17,575
Total revenue related to future performance obligations	$	117,650	$	226,398

Disaggregation of Revenue [Table Text Block]

	Year ended December 31, 2018
	Asphalt		Crude Oil		Crude Oil		Crude Oil
	Terminalling		Terminalling		Pipeline		Trucking
	Services		Services		Services		Services		Total
Third-party revenue:
Fixed storage, throughput and other revenue	$	18,100	$	10,966	$	-	$	-	$	29,066
Variable throughput revenue		918		962		-		-		1,880
Variable reimbursement revenue		7,090		-		-		-		7,090
Crude oil transportation revenue		-		-		6,396		14,324		20,720
Crude oil product sales revenue		-		-		235,428		10		235,438
Related-party revenue:
Fixed storage, throughput and other revenue		15,352		-		215		-		15,567
Variable throughput revenue		762		-		-		-		762
Variable reimbursement revenue		5,572		-		230		-		5,802
Product sales revenue		482		-		-		-		482
Total revenue from contracts with customers	$	48,276	$	11,928	$	242,269	$	14,334	$	316,807

	Year ended December 31, 2019
	Asphalt		Crude Oil		Crude Oil		Crude Oil
	Terminalling		Terminalling		Pipeline		Trucking
	Services		Services		Services		Services		Total
Third-party revenue:
Fixed storage, throughput and other revenue	$	20,334	$	13,065	$	-	$	-	$	33,399
Variable throughput revenue		1,234		2,300		-		-		3,534
Variable reimbursement revenue		7,121		-		-		-		7,121
Crude oil transportation revenue		-		-		6,691		11,066		17,757
Crude oil product sales revenue		-		-		231,051		-		231,051
Related-party revenue:
Fixed storage, throughput and other revenue		11,314		-		229		-		11,543
Variable reimbursement revenue		4,473		-		37		-		4,510
Total revenue from contracts with customers	$	44,476	$	15,365	$	238,008	$	11,066	$	308,915