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Equity Method Investments (Details) $ in Thousands | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Feb. 28, 2018 terminal | Mar. 31, 2018 USD ($) joint_venture | Mar. 31, 2017 USD ($) | Dec. 31, 2017 USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity method investments, number of joint ventures | joint_venture |  | 2 |  |
Investment in joint ventures |  | $ 105,630 |  | $ 106,465
CP LLC |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Ownership interest (as percent) |  | 50.00% |  |
Rangeland Rio |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Ownership interest (as percent) |  | 33.00% |  |
Joint Ventures |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Current assets |  | $ 13,226 |  | 12,671
Non-current assets |  | 242,851 |  | 244,329
Current liabilities |  | 2,227 |  | 1,798
Non-current liabilities |  | 0 |  | $ 0
Revenues |  | 7,990 | $ 5,671 |
Gross profit |  | 7,990 | 5,671 |
Net income |  | $ 2,712 | $ 1,013 |
DKGP Energy Terminals, LLC |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Ownership interest (as percent) | 50.00% |  |  |
Equity method investment, number of terminals acquired | terminal | 2 |  |  |
Equity method investment, terminals managed under joint venture agreement | terminal | 4 |  |  |

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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571 + Details
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- Definition The amount of gross profit (loss) reported by an equity method investment of the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721683-107760 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33912-111571 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571 + Details
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