Significant Accounting Policies and Practices (Details) ft³ in Billions				3 Months Ended		12 Months Ended
	Jul. 18, 2019 USD ($)	Jan. 02, 2019 terminal	Aug. 25, 2017 Inch	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Dec. 31, 2019 USD ($) segment	Dec. 31, 2018 USD ($)		Dec. 31, 2017 USD ($)		Jun. 28, 2019 USD ($) ft³	Jul. 31, 2018 mi
Goodwill and Other Intangibles
Number of reporting units | segment						4
Impairment of goodwill						$ 0	$ 0		$ 0
Impairment of intangible assets						0	0		0
Debt Issuance Costs
Debt issuance cost						4,406,000	1,312,000	[1]	66,000	[1]
Amortization of debt issuance costs						4,041,000	3,445,000	[1]	2,897,000	[1]
Accumulated amortization of debt issuance costs						24,644,000	20,607,000
Impairment of Long-Lived Assets
Impairment of long-lived assets						0	0	[1],[2]	2,225,000	[1],[2]
Indirect Selling, General and Administrative Expenses
Indirect selling, general and administrative expenses						$ 16,657,000	$ 16,416,000		$ 16,416,000
Minimum
Deferred Catalyst Costs
Catalyst, useful life (in months)						12 months
Deferred Turnaround Costs
Turnarounds, useful life (in months)						12 months
Maximum
Deferred Catalyst Costs
Catalyst, useful life (in months)						36 months
Deferred Turnaround Costs
Turnarounds, useful life (in months)						36 months
Transportation revenue
Impairment of Long-Lived Assets
Impairment of long-lived assets				$ 1,625,000
Terminalling and storage
Impairment of Long-Lived Assets
Impairment of long-lived assets				$ 600,000
Revolving Loan Facility
Debt Issuance Costs
Write off of existing debt issuance costs	$ 608,000
Hurricane Harvey
Impairment of Long-Lived Assets
Impairment of long-lived assets					$ 186,000
Inches of rain produced | Inch			50
Discontinued Operations, Disposed of by Sale | WTLPG
Accounting Policies [Line Items]
Ownership percentage												20.00%
Length common carrier pipeline (in miles) | mi												2,300
Natural Gas Storage Assets | Discontinued Operations, Disposed of by Sale
Accounting Policies [Line Items]
Natural gas storage (in cubic feet) | ft³											50
Proceeds from sale of assets											$ 210,067,000
Martin Transport Inc. Stock Purchase Agreement
Accounting Policies [Line Items]
Number of terminals | terminal		23

[1] Financial information has been revised to include results attributable to MTI acquired from Martin Resource Management Corporation. See Note 2 – Significant Accounting Policies and Practices.

[2] Financial information has been revised to include results attributable to MTI acquired from Martin Resource Management Corporation. See Note 2 – Significant Accounting Policies and Practices.