Summary of Significant Accounting Policies	8 Months Ended
Sep. 12, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES The Company's significant accounting policies are described in Note 2, "Summary of Significant Accounting Policies," in the Company's Annual Report on Form 10-K for the fiscal year ended January 3, 2015. There have been no material changes in these policies or their application. The Company tests goodwill for impairment annually in the fourth quarter and in interim periods if changes in circumstances indicate that the carrying value of goodwill may not be recoverable. The Company tests goodwill for impairment at each of its two reporting units, Environmental Services and Oil Business, both of which have goodwill. We do not aggregate reporting units for purposes of impairment testing. In fiscal 2014, the fair value of the Environmental Services reporting unit was substantially in excess of its carrying value. The fair value of the Oil Business reporting unit exceeded its carrying value by approximately 8.7 percent. There is a moderate degree of uncertainty associated with key Oil Business fair value assumptions such as the selling price of re-refined oil products and byproducts, the price paid/(charged) for raw material inputs such as used oil, operating efficiency of the used oil re-refinery, etc. A contraction of the spread between the selling price of lubricating base oil and the price paid/(charged) to vendors for raw material inputs could reasonably be expected to negatively affect the key assumptions used to determine fair value. Recently Issued Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606) (ASU 2014-09). ASU 2014-09 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. This new guidance is effective for annual reporting periods (including interim reporting periods within those periods) beginning after December 15, 2016. Entities have the option of using either a full retrospective or a modified approach to adopt the guidance. This update could impact the timing and amounts of revenue recognized. The Company is currently evaluating the effect that implementation of this update will have on its consolidated financial position and results of operations upon adoption. In April 2015, the FASB issued ASU No. 2015-03, Interest - Imputation of Interest (Subtopic 835-30) - Simplifying the Presentation of Debt Issuance Costs. ASU 2015-03 requires companies to present debt issuance costs on the balance sheet as a direct deduction from the debt liability in a manner consistent with the Company's accounting treatment of debt discounts. The changes are to be applied retrospectively to all periods presented beginning in annual periods beginning after December 15, 2015, and early adoption is permitted. The Company expects to reflect these changes in presentation of debt issuance costs beginning in the first quarter of fiscal 2016. The Company expects the adoption of ASU 2015-03 will decrease Other Current Assets by $1.4 million and decrease Long Term Debt by $1.4 million. In September 2015, the FASB issued ASU No. 2015-16, Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments (ASU 2015-16). ASU No. 2015-16 simplifies the accounting for measurement-period adjustments in a business combination by requiring the acquirer to recognize adjustments to provisional amounts identified during the measurement period in the reporting period in which the adjustments are determined. The acquirer is also required to record in the reporting period in which the adjustments are determined the effect on earnings of changes in depreciation, amortization, and other items resulting from the change to the provisional amounts. The new guidance is effective for fiscal years beginning after December 15, 2015, including interim periods within those fiscal years. The Company is currently evaluating the effect that implementation of this update will have on its consolidated financial position and results of operations upon adoption.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

The Company's significant accounting policies are described in Note 2, "Summary of Significant Accounting Policies," in the Company's Annual Report on Form 10-K for the fiscal year ended January 3, 2015. There have been no material changes in these policies or their application.

The Company tests goodwill for impairment annually in the fourth quarter and in interim periods if changes in circumstances indicate that the carrying value of goodwill may not be recoverable. The Company tests goodwill for impairment at each of its two reporting units, Environmental Services and Oil Business, both of which have goodwill. We do not aggregate reporting units for purposes of impairment testing. In fiscal 2014, the fair value of the Environmental Services reporting unit was substantially in excess of its carrying value. The fair value of the Oil Business reporting unit exceeded its carrying value by approximately 8.7 percent. There is a moderate degree of uncertainty associated with key Oil Business fair value assumptions such as the selling price of re-refined oil products and byproducts, the price paid/(charged) for raw material inputs such as used oil, operating efficiency of the used oil re-refinery, etc. A contraction of the spread between the selling price of lubricating base oil and the price paid/(charged) to vendors for raw material inputs could reasonably be expected to negatively affect the key assumptions used to determine fair value.

Recently Issued Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606) (ASU 2014-09). ASU 2014-09 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. This new guidance is effective for annual reporting periods (including interim reporting periods within those periods) beginning after December 15, 2016. Entities have the option of using either a full retrospective or a modified approach to adopt the guidance. This update could impact the timing and amounts of revenue recognized. The Company is currently evaluating the effect that implementation of this update will have on its consolidated financial position and results of operations upon adoption.

In April 2015, the FASB issued ASU No. 2015-03, Interest - Imputation of Interest (Subtopic 835-30) - Simplifying the Presentation of Debt Issuance Costs. ASU 2015-03 requires companies to present debt issuance costs on the balance sheet as a direct deduction from the debt liability in a manner consistent with the Company's accounting treatment of debt discounts. The changes are to be applied retrospectively to all periods presented beginning in annual periods beginning after December 15, 2015, and early adoption is permitted. The Company expects to reflect these changes in presentation of debt issuance costs beginning in the first quarter of fiscal 2016. The Company expects the adoption of ASU 2015-03 will decrease Other Current Assets by $1.4 million and decrease Long Term Debt by $1.4 million.

In September 2015, the FASB issued ASU No. 2015-16, Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments (ASU 2015-16). ASU No. 2015-16 simplifies the accounting for measurement-period adjustments in a business combination by requiring the acquirer to recognize adjustments to provisional amounts identified during the measurement period in the reporting period in which the adjustments are determined. The acquirer is also required to record in the reporting period in which the adjustments are determined the effect on earnings of changes in depreciation, amortization, and other items resulting from the change to the provisional amounts. The new guidance is effective for fiscal years beginning after December 15, 2015, including interim periods within those fiscal years. The Company is currently evaluating the effect that implementation of this update will have on its consolidated financial position and results of operations upon adoption.