Significant Accounting Policies | (3) Significant Accounting Policies Principles of Consolidation The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”). The consolidated financial statements include the accounts of the Partnership and its wholly owned and controlled subsidiaries. All intercompany accounts and transactions have been eliminated. Reclassifications Certain prior period amounts related to loss on disposal of assets have been reclassified to cost of goods sold from general and administrative expenses to conform to current period presentation. Certain prior period amounts related to the contribution of Sampson included in general partner interest have been reclassified on the consolidated statements of changes in partners’ capital to non-controlling interests from the general partner interest to conform to current period presentation. Common Control Transactions Assets and businesses acquired from the Partnership’s sponsor and its controlled subsidiaries are accounted for as common control transactions whereby the net assets acquired are combined at their historical costs and the Partnership’s consolidated financial statements are adjusted retrospectively to reflect the transaction as if it occurred on the earliest date during which the entities were under common control. If any recognized consideration transferred in such a transaction exceeds the carrying value of the net assets acquired, the excess is treated as a capital distribution to the General Partner. If the carrying value of the net assets acquired exceeds any recognized consideration transferred including, if applicable, the fair value of any limited partner units issued, then that excess is treated as a capital contribution from the General Partner. To the extent that such transactions require prior periods to be recast, historical net equity amounts prior to the transaction date are attributed to the General Partner and any noncontrolling partner interest at the historical amount. As the acquisition of Cottondale, the Southampton Drop-Down, the Sampson Drop-Down and the Wilmington Drop-Down represented transfers of entities under common control, the consolidated financial statements and related information presented have been recast to include the historical results of Cottondale effective January 5, 2015, the date the Partnership’s sponsor acquired Acquisition II, Southampton effective April 9, 2015, the date Southampton was originally conveyed to the First Hancock JV and Sampson and Wilmington effective May 15, 2013, the date Sampson and Wilmington were originally organized. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make judgments, estimates and assumptions that affect the amounts reported in the Partnership’s consolidated financial statements and accompanying notes. Actual results could differ materially from those estimates. Segment and Geographic Information Operating segments are defined as components of an enterprise about which discrete financial information is available and regularly reviewed by the chief operating decision maker in deciding how to allocate resources and in assessing performance. The Partnership views its operations and manages its business as one operating segment. All long-lived assets of the Partnership are located in the United States. Other Comprehensive Income (Loss) Comprehensive income (loss) consists of two components, net income (loss) and other comprehensive income (loss). Other comprehensive income (loss) refers to revenue, expenses, and gains and losses that under GAAP are included in comprehensive income (loss) but excluded from net income (loss). The Partnership’s other comprehensive income consists of unrealized gains and losses related to derivative instruments accounted for as cash flow hedges. Cash and Cash Equivalents Cash and cash equivalents consist of short-term, highly liquid investments readily convertible into cash with an original maturity of three months or less. Accounts Receivable Accounts receivable are recorded at the invoiced amount and do not bear interest. In establishing an allowance for doubtful accounts, management considers historical losses adjusted to take into account current market conditions and customers’ financial condition, the amount of receivables in dispute, the current receivables aging and current payment patterns. The Partnership does not have any off-balance-sheet credit exposure related to its customers. Inventories Inventories consist of raw materials, work-in-progress, consumable tooling and finished goods. Fixed production overhead, including related depreciation expense, is allocated to inventory based on the normal production capacity of the facilities. To the extent the Partnership does not achieve normal production levels, the Partnership charges such under absorption of fixed overhead to cost of sales in the period incurred. Consumable tooling consists of spare parts and tooling to be consumed in the production process. Spare parts are expected to be used within a year and are expensed as used. Tooling items are amortized to expense over an estimated service life generally less than one year. Inventories are stated at the lower of cost or market using the first-in, first-out method (“FIFO”) for all inventories. Revenue Recognition The Partnership primarily earns revenue by supplying wood pellets to its customers under off-take contracts, the majority of the commitments under which are long-term in nature. The Partnership refers to the structure of its contracts as “take-or-pay” because they include a firm obligation of the customer to take a fixed quantity of product at a stated price and provisions that ensure the Partnership will be compensated in the case of a customer’s failure to accept all or a part of the contracted volumes or for termination by a customer. Each contract defines the annual volume of wood pellets that a customer is required to purchase and the Partnership is required to sell, the fixed price per metric ton for product satisfying a base net calorific value and other technical specifications. These prices are fixed for the entire term, subject to annual inflation-based adjustments and price escalators, as well as, in some instances, price adjustments for product specifications and changes in underlying costs, which have historically been immaterial. In addition to sales of the Partnership’s product under these long-term, take-or-pay contracts, the Partnership routinely sells wood pellets under shorter-term contracts, which range in volume and tenor and, in some cases, may include only one specific shipment. Because each of the Partnership’s contracts is a bilaterally negotiated agreement, the Partnership’s revenue over the duration of these contracts does not generally follow spot market pricing trends. The Partnership’s revenue from the sale of wood pellets is recognized as “Product Sales” when title and risk of loss has passed to the customer, the sales price to the customer is fixed and determinable, and collectability is reasonably assured. Depending on the specific off‑take contract, shipping terms are either CIF, CFR or FOB. Under a CIF contract, we procure and pay for shipping costs, which include insurance and all other charges, up to the port of destination for the customer. Under a CFR contract, we procure and pay for shipping costs, which include insurance (excluding marine cargo insurance) and all other charges, up to the port of destination for the customer. Shipping costs under CIF and CFR contracts are included in the price to the customer and, as such, are included in revenue and cost of goods sold. Under FOB contracts, the customer is directly responsible for shipping costs. Our customer shipping terms, as well as the timing and size of shipments during the year, can result in material fluctuations in our revenue recognized between periods but generally have little impact on gross margin. In some cases, the Partnership may purchase shipments of product from third-party suppliers and resell them in back-to-back transactions that immediately transfer title and risk of loss to the ultimate purchaser. Thus, the revenue from these transactions is recorded net of costs paid to the third-party supplier. The Partnership records this revenue as “Other revenue.” In instances when a customer requests the cancellation, deferral or acceleration of a shipment, the customer may pay a fee, including reimbursement of any incremental costs incurred by the Partnership, which is included in “Other revenue.” Other revenue also includes third- and related-party terminal services fees. Cost of Goods Sold Cost of goods sold includes the costs to produce and deliver wood pellets to customers. Raw material, production and distribution costs associated with delivering wood pellets to our owned and leased marine terminals and third‑ and related-party wood pellet purchase costs are capitalized as a component of inventory. Fixed production overhead, including the related depreciation expense, is allocated to inventory based on the normal capacity of the production plants. These costs are reflected in cost of goods sold when inventory is sold. Distribution costs associated with shipping wood pellets to customers and amortization of favorable acquired customer contracts are expensed as incurred. Inventory is recorded using FIFO, which requires the use of judgment and estimates. Given the nature of the inventory, the calculation of cost of goods sold is based on estimates used in the valuation of the FIFO inventory and in determining the specific composition of inventory that is sold to each customer. Derivative Instruments The Partnership uses derivative instruments to partially offset its exposure to foreign currency exchange and interest rate risk. The Partnership enters into foreign currency forward and option contracts, a portion of which have been designated as cash flow hedges, to offset foreign currency exchange risk on a portion of forecasted revenue and enters into interest rate swaps to offset the variable interest rate risk associated with borrowings. The Partnership does not hold or issue derivative financial instruments for trading or speculative purposes. Derivative instruments are classified as either assets or liabilities on a gross basis and carried at fair value and included in prepaid expenses and other current assets, other long-term assets, accrued and other current liabilities, and . other long-term liabilities on the consolidated balance sheets. Changes in fair value are either recognized as unrealized gains and losses in accumulated other comprehensive income in partners’ capital or net income depending on the nature of the underlying exposure, whether the derivative is formally designated as a hedge, and, if designated, the extent to which the hedge is effective. To receive hedge accounting treatment, cash flow hedges must be highly effective in offsetting changes to expected future cash flows on hedged transactions. The effective portion of foreign currency forward and option contracts designated as cash flow hedges is reported as a component of accumulated other comprehensive income in partners’ capital and reclassified into revenue in the same period or periods during which the hedged revenue affects earnings. The effective portion of interest rate swaps designated as cash flow hedges is reported as a component of accumulated other comprehensive income in partners’ capital and reclassified into interest expense in the same period or periods during which the hedged interest expense affects earnings. The ineffective portion of cash flow hedges, if any, is recognized in earnings in the current period. The Partnership links all derivative instruments that are designated as cash flow hedges to specific assets and liabilities on the consolidated balance sheets or to specific forecasted transactions. To qualify for hedge accounting, the item to be hedged must cause an exposure risk and the Partnership must have an expectation that the related hedging instrument will be effective at reducing or mitigating that exposure. In accordance with the hedging requirements, the Partnership documents all hedging relationships at inception and includes a description of the risk management objective and strategy for undertaking the hedge, identification of the hedging instrument, the hedged item, the nature of the risk being hedged, the method for assessing effectiveness of the hedging instrument in offsetting the hedged risk and the method of measuring any ineffectiveness. When an event or transaction occurs or the derivative contract expires or the forecasted transaction is no longer probable of occurring, hedge accounting is discontinued. The Partnership also formally assesses, both at the hedge’s inception and on an ongoing basis, whether the derivative instruments are highly effective in offsetting changes in cash flows of hedged items. If it is determined that a derivative instrument has ceased to be a highly effective hedge, hedge accounting is discontinued prospectively. Hedge effectiveness for foreign exchange forward contracts designated as cash flow hedges is assessed by comparing the change in the fair value of the hedge contract with the change in the fair value of the forecasted cash flows of the hedged item. For foreign exchange option contracts, hedge effectiveness is assessed based on the hedging instrument’s entire change in fair value. Hedge effectiveness for interest rate swaps is assessed by comparing the change in fair value of the swap with the change in the fair value of the hedged item due to changes in the benchmark interest rate. Derivative instruments that do not qualify, or no longer qualify, as hedges are adjusted to fair value through earnings in the current period. Foreign Currency Hedges The Partnership may hedge a portion of its foreign currency exposure associated with revenue under off-take contracts not denominated in U.S. Dollars. The Partnership has designated a portion of its foreign currency forward contracts and foreign currency purchased options as cash flow hedges. These derivatives are used to hedge certain revenue transactions forecasted generally within the next 60-month period. Interest Rate Hedges The Partnership utilizes an interest rate swap to hedge its cash flow exposure to fluctuations in variable-based interest rates under borrowings. The Partnership entered into a pay-fixed, receive-variable interest rate swap in September 2016 to hedge the interest rate risk associated with Tranche A-1 and Tranche A-3 of the Senior Secured Credit Facilities. The Partnership discontinued hedge accounting as of December 14, 2016 following the repayment of Tranche A-1 and A-3 of the Senior Secured Credit Facilities (see Note 12, Long-Term Debt and Capital Lease Obligations ). Interest expense for the year ended December 31, 2017 included the reclassification of an insignificant amount representing the effective portion reported as a component of accumulated other comprehensive income. The Predecessor previously used derivative financial instruments to manage its exposure to fluctuations in interest rates on long-term debt as required per the terms of the Prior Senior Secured Credit Facilities (see Note 12, Long-Term Debt and Capital Lease Obligations ). The Predecessor recognized the interest rate swaps on the consolidated balance sheet at fair value. The Predecessor’s interest rate swap agreements were not designated as hedges; therefore, the gain or loss was recognized in the consolidated statement of income in interest expense. In connection with the repayment of the Prior Senior Secured Credit Facilities in April 2015 (see Note 12, Long-Term Debt and Capital Lease Obligations ), the Predecessor terminated the interest rate swaps and paid a termination fee of $0.1 million. Property, Plant and Equipment Property, plant and equipment are recorded at cost, which includes the fair values of assets acquired. Equipment under capital leases is stated at the present value of minimum lease payments. Useful lives of assets are based on historical experience and are adjusted when changes in the expected physical life of the asset, its planned use, technological advances, or other factors show that a different life would be more appropriate. Changes in useful lives are recognized prospectively. Depreciation is calculated using the straight-line method based on the estimated useful lives of the related assets. Plant and equipment held under capital leases are amortized on a straight-line basis over the shorter of the lease term or estimated useful life of the asset. Construction in progress primarily represents expenditures for the development and expansion of facilities. Capitalized interest cost and all direct costs, which include equipment and engineering costs related to the development and expansion of facilities, are capitalized as construction in progress. Depreciation is not recognized for amounts in construction in progress. Normal repairs and maintenance costs are expensed as incurred. Amounts incurred that extend an asset’s useful life, increase its productivity or add production capacity are capitalized. Direct costs, such as outside labor, materials, internal payroll and benefit costs, incurred during the construction of a new plant are capitalized; indirect costs are not capitalized. The principal useful lives are as follows: Asset Estimated useful life Land improvements 15 to 17 years Buildings 5 to 40 years Machinery and equipment 2 to 25 years Vehicles 5 to 6 years Furniture and office equipment 2 to 10 years Leasehold improvements Shorter of estimated useful life or lease term, generally 10 years Costs and accumulated depreciation applicable to assets retired or sold are removed from the accounts, and any resulting gain or loss is included in the consolidated statement of operations. Debt Issuance Costs and Original Issue Discount Debt issuance costs represent legal fees, underwriter fees and other direct expenses associated with securing the Partnership’s borrowings and are capitalized on the consolidated balance sheets as a direct deduction from the carrying amount of the related long-term debt. Original issue discounts are recorded on the consolidated balance sheets within the carrying amount of long-term debt. Debt issuance costs and original issue discount are amortized over the term of the related debt using straight line amortization, which approximates the effective interest rate method. If a debt instrument is retired before its scheduled maturity date, any unamortized debt issuance costs and original issue discount associated with that debt instrument are expensed in the same period. Debt issuance costs and original issue discount at December 31, 2017 and 2016, were $7.1 million and $7.8 million, respectively. Gains or losses on debt extinguishment include any associated unamortized debt issuance costs and original issue discount. Goodwill Goodwill represents the purchase price paid for acquired businesses in excess of the identifiable acquired assets and assumed liabilities. Goodwill is not amortized, but is tested for impairment annually and whenever an event occurs or circumstances change such that it is more likely than not that the fair value of the reporting unit is less than its carrying amounts. At December 31, 2017 and 2016, the Partnership identified one reporting unit that corresponded to the Partnership’s one segment. The Partnership has selected the fourth fiscal quarter to perform its annual goodwill impairment test. The Partnership first performs a qualitative assessment to determine whether it is necessary to perform quantitative testing. If this initial qualitative assessment indicates that it is more likely than not that the fair value of a reporting unit is more than its carrying value, goodwill is not considered impaired and the Partnership is not required to perform the two-step impairment test. Qualitative factors considered in this assessment include (i) macroeconomic conditions, (ii) past, current and projected future financial performance, (iii) industry and market considerations, (iv) changes in the costs of raw materials, fuel and labor and (v) entity-specific factors such as changes in management or customer base. If the results of the qualitative assessment indicate that it is more likely than not that goodwill is impaired, the Partnership will perform a two-step impairment test. Under the first step, the fair value of the reporting unit is compared with its carrying value (including goodwill). If the fair value of the reporting unit exceeds its carrying value, step two does not need to be performed. If the fair value of the reporting unit is less than its carrying value, an indication of goodwill impairment exists for the reporting unit and the entity must perform step two of the impairment test (measurement). Under Step 2, an impairment loss is recognized for any excess of the carrying amount of the reporting unit’s goodwill over the implied fair value of that goodwill. For the years ended December 31, 2017 and 2016, the Partnership applied the qualitative test and determined that it was more likely than not that the estimated fair value of the reporting unit substantially exceeded the related carrying value, and, accordingly, was not required to apply the two-step impairment test. The Partnership did not record any goodwill impairment for the years ended December 31, 2017 and 2016 (see Note 10, Goodwill and Other Intangible Assets ). In making this qualitative analysis for the years ended December 31, 2017, and 2016, the Partnership evaluated the following economic factors: · The Partnership’s consolidated financial results reflect continued improved financial performance in 2017 compared to 2016 as reflected by increases in gross margin as well as the generation of positive net income in 2017 and 2016. · The Partnership continued its expansion with the Wilmington Drop-Down. · In 2017, the Partnership entered into agreements for incremental volumes with new and existing customers. · In October 2017, the Partnership issued $55.0 million in aggregate principal amount of 8.5% senior unsecured notes due 2021 at a premium of 106.25% to par value. · The Partnership’s market capitalization exceeds the carrying value of its net assets as of December 31, 2017. Intangible Assets In April 2015, the sponsor contributed net assets to the Partnership associated with the acquisition of Green Circle in January 2015, which included intangible assets related to favorable customer contracts (see Note 1, Description of Business and Basis of Presentation ). The Partnership also recorded payments made to acquire a six-year wood pellet off-take contract with a European utility in 2010 as an intangible asset. These costs are recoverable through the future revenue streams generated from the customer contracts and are closely related to the revenue from the customer contracts. These costs are recorded as an asset and charged to expense as the revenue is recognized (see Note 10, Goodwill and Other Intangible Assets ). All other costs, such as general and administrative expenses and costs associated with the negotiation of a contract that is not consummated, are charged to expense as incurred. Unit-Based Compensation Employees, consultants and directors of the General Partner and any of its affiliates are eligible to receive awards under the Enviva Partners, LP Long-Term Incentive Plan. For accounting purposes, units granted to employees of the Partnership’s affiliates are treated as if they are distributed by the Partnership. Phantom units issued in tandem with corresponding distribution equivalent rights (“DERs”) are granted to employees of Enviva Management who provide services to the Partnership and to certain non-employee directors of the General Partner. These awards vest subject to the satisfaction of service requirements or the achievement of certain performance goals, following which common units in the Partnership will be delivered to the holder of the phantom units. Affiliate entities recognize compensation expense for the phantom units awarded to their employees and a portion of that expense is allocated to the Partnership (see Note 13, Related-Party Transactions-Management Services Agreement and Note 16, Equity-Based Awards ). The Partnership’s outstanding unit-based awards do not have a cash option and are classified as equity on the Partnership’s consolidated balance sheets. The Partnership also recognizes compensation expense for units awarded to non-employee directors. Impairment of Long-Lived Assets Long-lived assets, such as property, plant and equipment and amortizable intangible assets, are tested for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If circumstances require that a long-lived asset or asset group be tested for possible impairment, the Partnership first compares undiscounted cash flows expected to be generated by that asset or asset group to such asset or asset group’s carrying value. If the carrying value of the long-lived asset or asset group is not recoverable on an undiscounted cash flow basis, an impairment is recognized to the extent that the carrying value exceeds its fair value. Fair value is determined through various valuation techniques including discounted cash flow models, quoted market values and third-party independent appraisals, as considered necessary. Commitments and Contingencies Liabilities for loss contingencies arising from claims, assessments, litigation, fines, and penalties and other sources are recorded when it is probable that a liability has been incurred and the amount can be reasonably estimated. Legal costs incurred in connection with loss contingencies are expensed as incurred. Fair Value Measurements The Partnership applies authoritative accounting guidance for fair value measurements of financial and nonfinancial assets and liabilities. The Partnership uses valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible. The Partnership determines fair value based on assumptions that market participants would use in pricing an asset or liability in the principal or most advantageous market. When considering market participant assumptions in fair value measurements, the following fair value hierarchy distinguishes between observable and unobservable inputs, which are categorized in one of the following levels: · Level 1 Inputs: Unadjusted, quoted prices in active markets for identical assets or liabilities accessible to the reporting entity at the measurement date. · Level 2 Inputs: Other than quoted prices included in Level 1 inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the asset or liability. · Level 3 Inputs: Unobservable inputs for the asset or liability used to measure fair value to the extent that observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset or liability at the measurement date. Recent and Pending Accounting Pronouncements In August 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-12, Derivatives and Hedging: Targeted Improvements to Accounting for Hedging Activities (Topic 815)-Targeted Improvements to Accounting for Hedging Activities . ASU 2017-12 expands and refines hedge accounting for both financial and non-financial risk components, aligns the recognition and presentation of the effects of hedging instruments and hedge items in the financial statements, and includes certain targeted improvements to ease the application of current guidance related to the assessment of hedge effectiveness. ASU 2017-12 requires a modified retrospective transition method which requires the recognition of the cumulative effect of the change on the opening balance of each affected component of equity in the statement of financial position as of the date of adoption. The new guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018, with early adoption permitted. The Partnership is in the process of evaluating the impact of the adoption of ASU No. 2017-12 on its consolidated financial statements. In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other . ASU 2017-04 simplifies the accounting for goodwill impairment by eliminating Step 2 of the current goodwill impairment test. In computing the implied fair value of goodwill under Step 2, an entity had to perform procedures to determine the fair value at the impairment testing date of its assets and liabilities (including unrecognized assets and liabilities) following the procedure that would be required in determining the fair value of assets acquired and liabilities assumed in a business combination. Instead, under the new standard, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. An entity still has the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary. The new guidance should be adopted for annual or any interim goodwill impairment tests in fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. This standard will be implemented prospectively in 2018 for all future goodwill impairment tests and will simplify such evaluations. In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business , in an effort to clarify the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The amendments in this standard provide a screen to determine when an integrated set of assets and activities is not a business. The screen requires that when substantially all of the fair value of the gross assets acquired (or disposed of) is concentrated in a single identifiable asset or a group of similar identifiable assets, the integrated set of assets and activities is not a business. The new guidance is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is allowed for transactions for which the acquisition date occurs before the issuance date or effective date of the amendments, only when the transaction has not been reported in financial statements that have been issued or made available for issuance and for transactions in which a subsidiary is deconsolidated or a group of assets is derecognized that occur before the issuance date or effective date of the amendments, only when the transaction has not been reported in financial statements that have been issued or made available for issuance. The ASU is effective for the Partnership’s fiscal year 2018, including interim periods. The adoption of this standard may have an impact on the accounting for future acquisitions. In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230) — Restricted Cash: A Consensus of the FASB Emerging Issues Task Force , which requires that a statements of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. As a result, entities will no longer present transfers between cash and cash equivalents and restricted cash and restricted cash equivalents in the statements of cash flows. The guidance addresses the presentation of changes in restricted cash and restricted cash equivalents in the statements of cash flows. When cash, cash equivalents, restricted cash and restricted cash equivalents are presented in more than one line item on the balance sheet, the new guidance requires a reconciliation of the totals in the statements o |