ORGANIZATION AND BASIS OF PRESENTATION (Policies)	9 Months Ended
ORGANIZATION AND BASIS OF PRESENTATION (Policies)	Sep. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited interim consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States, or GAAP, for interim consolidated financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all the information and disclosures required by GAAP for complete consolidated financial statements. In the opinion of management, they contain all adjustments, consisting only of normal recurring adjustments, which management considers necessary to present fairly our financial position as of September 30, 2015, our results of operations for the three and nine months ended September 30, 2015 and 2014, and our cash flows for the nine months ended September 30, 2015 and 2014. We derived our consolidated balance sheet as of December 31, 2014, from the audited consolidated financial statements included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2014. Our results of operations for the three and nine months ended September 30, 2015 and 2014, should not be taken as indicative of the results to be expected for the full year due to fluctuations in the supply of and demand for crude oil and biofuels, timing and completion of acquisitions, if any, and the impact of fluctuations in foreign currency exchange rates. These unaudited interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements and accompanying notes thereto presented in our Annual Report on Form 10-K for the fiscal year ended December 31, 2014.
Restricted Cash	RESTRICTED CASH We include in restricted cash on our consolidated balance sheets amounts representing a cash account for which the use of funds is restricted by a facilities connection agreement among us and Gibson Energy Partnership, or Gibson, that we entered into during 2014 in connection with the development of our Hardisty rail terminal. The collaborative arrangement is further discussed in Note 9. Collaborative Arrangement.
Accounts Receivable	CCOUNTS RECEIVABLE Accounts receivable are derived from amounts we have billed to our customers, which include crude oil producing and petroleum refining companies, as well as marketers of petroleum, petroleum products and biofuels, for services we have provided. We perform ongoing credit evaluations of our customers. When appropriate, we use the specific identification method to estimate allowances for doubtful accounts based on our customers’ financial condition and collection history, as well as other pertinent factors. Accounts are written-off against the allowance when significantly past due and we have deemed the amounts uncollectible
New Accounting Pronouncements	RECENT ACCOUNTING PRONOUNCEMENTS NOT YET ADOPTED EPU Calculations for MLPs In April 2015, the Financial Accounting Standards Board, or the FASB, issued Accounting Standards Update No. 2015-06, which amends the FASB Accounting Standards Codification section 260 as it relates to the application of the two-class method of computing earnings per share by master limited partnerships. The guidance specifically requires that earnings or losses of a transferred business prior to the date of a dropdown transaction be allocated entirely to the general partner in computing earnings per unit and provide qualitative disclosures about how the rights to the earnings or losses before and after the dropdown differ for purposes of computing earnings per unit. This pronouncement is effective for fiscal years beginning after December 15, 2015, and should be applied retrospectively for all financial statements presented, with early adoption permitted. We do not expect our adoption of this standard to have a material impact on our consolidated financial statements. Interest — Imputation of Interest In April 2015, the FASB issued Accounting Standards Update No. 2015-03, which simplifies the presentation of debt issuance costs. Under the new standard, debt issuance costs will be presented as a reduction of the carrying amount of the related indebtedness, rather than as an asset. This pronouncement is effective for annual and interim periods beginning after December 15, 2015, with early adoption permitted. Applicable disclosures for a change in accounting principle are required in the year of adoption. We do not expect that our adoption of this pronouncement will have a material impact on our consolidated financial statements. However, the total assets and total liabilities presented in our consolidated balance sheets will be reduced by the amounts we have recorded as deferred financing costs at the time of adoption. Consolidation In February 2015, the FASB issued Accounting Standards Update No. 2015-02, which changes the consolidation analysis for all reporting entities, but primarily affects the consolidation of limited partnerships and their equivalents. All reporting entities that hold a variable interest in other legal entities will be required to reassess their consolidation conclusions and potentially revise their disclosures. This pronouncement is effective for annual and interim periods beginning after December 15, 2015, with early adoption permitted. We are currently evaluating the impact, if any, that this pronouncement will have on our consolidated financial statements. Revenue from Contracts with Customers In May 2014, the FASB issued Accounting Standards Update No. 2014-09 that outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. In July 2015, the FASB delayed the effective date of the new revenue standard by one year. This accounting update is effective for annual and interim periods beginning on or after December 15, 2017 and may be applied on either a full or modified retrospective basis. We are currently evaluating which transition approach we will apply and the impact that this pronouncement will have on our consolidated financial statements.

Entity's cash and cash equivalents accounting policy with respect to restricted balances. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits.