Summary of Significant Accounting Policies | 2. Summary of Significant Accounting Policies Basis of Presentation and Consolidation Solaris Oilfield Infrastructure, Inc. (either individually or together with its subsidiaries, as the context requires “Solaris Inc.” or the “Company”) is the managing member of Solaris Oilfield Infrastructure, LLC (“Solaris LLC”) and is responsible for all operational, management and administrative decisions relating to Solaris LLC’s business. Solaris Inc. consolidates the financial results of Solaris LLC and its subsidiaries and reports non-controlling interest related to the portion of the units in Solaris LLC (the “Solaris LLC Units”) not owned by Solaris Inc., which will reduce net income attributable to the holders of Solaris Inc.’s Class A common stock. All material intercompany transactions and balances have been eliminated upon consolidation. Use of Estimates The preparation of consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The most significant estimates relate to stock-based compensation, useful lives and salvage values of long-lived assets, future cash flows associated with goodwill and long-lived asset impairment evaluations, net realizable value of inventory, income taxes, Tax Receivable Agreement liability, collectability of accounts receivable and estimates of allowance for credit losses and determination of the present value of lease payments and right-of-use assets. Cash and Cash Equivalents For the purposes of the statements of cash flows, the Company considers all short-term, highly liquid, investments with an original maturity of three months or less to be cash equivalents. Cash is deposited in demand accounts in federally insured domestic institutions to minimize risk. Accounts of each institution are insured by Federal Deposit Insurance Corporation. Cash balances at times may exceed federally-insured limits. We have not incurred losses related to these deposits. Accounts Receivable and Allowance for Credit Losses Accounts receivable consists of trade receivables recorded at the invoice amount, plus accrued revenue that is not yet billed, less an estimated allowance for credit losses (if any). The Company accounts for credit losses in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 326 (“ASC 326”), Financial Instruments – Credit Losses. Accounts receivable are generally due within 60 days or less, or in accordance with terms agreed with customers. We do not accrue interest on delinquent receivables. Total unbilled revenue included in accounts receivable as of December 31, 2022 and 2021 was $16,864 and $6,292 , respectively. In our determination of the allowance for credit losses, we pool receivables with similar risk characteristics and consider a number of current conditions, past events and other factors, including the length of time trade accounts receivable are past due, previous loss history, and the condition of the general economy and the industry as a whole, and apply an expected loss percentage. The expected credit loss percentage is determined using historical loss data adjusted for current conditions and forecasts of future economic conditions. The related expense associated with the recognition of the allowance for credit losses was included in Other operating expense on our condensed consolidated statements of operations. Adjustments to the allowance may be required depending on how potential issues are resolved and when receivables are collected. Accounts deemed uncollectible are reflected as a write-off applied against the allowance for credit losses and occur when the financial condition of our customers deteriorate and result in an impairment of their ability to make payments, including the impact of customer bankruptcies. Inventories Inventories consist of raw materials used in the manufacturing and maintenance of the Company’s systems, which are stated at the lower of weighted average cost or net realizable value. Net realizable value is determined, giving consideration to quality, excessive levels, obsolescence and other factors. Consideration is also given to usage levels of inventory in our manufacturing and maintenance processes, and inventory on hand for longer than 12 months that is not determined to be obsolete is classified as non-current on our balance sheet. Adjustments that reduce stated amounts will be recognized as impairments in the consolidated statements of operations. There were no impairments recorded for the years ended December 31, 2022 and 2021. Property, Plant and Equipment Property, plant and equipment are stated at cost, or fair value for assets acquired in a business combination, less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful service lives of the assets as noted below: Useful Life Systems and related equipment Up to 15 years Machinery and equipment 3-10 years Furniture and fixtures 5 years Computer hardware and software 3-10 years Vehicles 5 years Transloading facility and equipment 15-30 years Buildings and leasehold improvements 15 years Systems and equipment that are in the process of being manufactured are considered property, plant and equipment. However, the systems do not depreciate until they are fully completed. Systems in process are a culmination of material, labor and overhead. Expenditures for maintenance and repairs are expensed as incurred. Betterments that increase the value or materially extend the life of the related assets are capitalized. Upon sale or disposition of property and equipment, the cost and related accumulated depreciation and amortization are removed from the consolidated financial statements and any resulting gain or loss is recognized in the consolidated statements of operations. Refer to Impairment of Long-Lived Assets, Definite-lived Intangible Assets and Right of Use (“ROU”) Assets below for discussion of impairment triggers in the year ended December 31, 2020. Definite-lived Intangible Assets Identified intangible assets with determinable lives consist primarily of customer relationships, a non-competition agreement and software acquired, as well as patents that were filed for our systems and other intellectual property. Amortization on these assets is calculated on the straight-line method over the estimated useful lives of the assets, which is five Identified intangible assets by major classification consist of the following: Accumulated Net Book Gross Amortization Value As of December 31, 2022: Customer relationships $ 4,703 $ (3,416) $ 1,287 Software acquired in the acquisition of Railtronix 346 (251) 95 Non-competition agreement 225 (225) — Patents and other 114 (67) 47 Total identifiable intangibles $ 5,388 $ (3,959) $ 1,429 As of December 31, 2021: Customer relationships $ 4,703 $ (2,744) $ 1,959 Software acquired in the acquisition of Railtronix 346 (202) 144 Non-competition agreement 225 (184) 41 Patents and other 114 (55) 59 Total identifiable intangibles $ 5,388 $ (3,185) $ 2,203 Leases The Company accounts for leases in accordance with FASB ASC Topic 842, Leases (“ASC Topic 842”). We determine if an arrangement is a lease at inception. Short-term leases (i.e., leases of twelve months or less) are recognized in profit or loss on a straight-line basis over the lease term. ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. ROU assets and liabilities are recognized at the commencement date based on the present value of lease payments over the lease term. As most of the Company’s leases do not provide an implicit rate, we use our incremental borrowing rate in determining the present value of lease payments based on the information available at the commencement date. Our incremental borrowing rate reflects the estimated rate of interest that we would pay to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment. We use the implicit rate when readily determinable. The ROU asset also includes any lease payments made and excludes lease incentives received. The Company’s lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term. See Note 7. The Company’s lease agreements do not include both lease and non-lease components, extension options or residual value guarantees. Additionally, our lease agreements do not impose restrictions on our ability to pay dividends or incur financing obligations. Operating Leases The Company leases land and equipment under operating leases which expire at various dates through February 2047. Upon completion of the primary term, both parties have substantive rights to terminate the leases. As a result, enforceable rights and obligations do not exist under the rental agreements subsequent to the primary term. Operating leases are included in operating lease ROU assets, current portion of operating lease liabilities, and operating lease liabilities, net of current in the Company’s consolidated balance sheets. Finance Leases The Company leases property under an agreement classified as a finance lease. Finance leases are included in property and equipment, current portion of finance lease liabilities, and finance lease liabilities, net of current in the Company’s consolidated balance sheets. Goodwill Goodwill represents the excess of the purchase price of a business over the estimated fair value of the identifiable assets acquired and liabilities assumed. As of December 31, 2022 and 2021, the Company reported $13,004 of goodwill related to the purchase of the silo manufacturing business from Loadcraft Industries Ltd. The Company evaluates goodwill for impairment annually, as of October 31, or more often as facts and circumstances warrant. Factors such as unexpected adverse economic conditions, competition and market changes may require more frequent assessments. Before employing detailed impairment testing methodologies, the Company may first evaluate the likelihood of impairment by considering qualitative factors relevant to the business, such as macroeconomic, industry, market or any other factors that have a significant bearing on fair value. If the Company first utilizes a qualitative approach and determines that it is more likely than not that goodwill is impaired, detailed testing methodologies are then applied. Otherwise, the Company concludes that no impairment has occurred. The Company may also choose to bypass a qualitative approach and opt instead to employ detailed testing methodologies, regardless of a possible more likely than not outcome. If the Company determines through the qualitative approach that detailed testing methodologies are required, or if the qualitative approach is bypassed, the Company compares the fair value of a reporting unit with its carrying amount. If the estimated fair value of a reporting unit exceeds its carrying amount, goodwill of the reporting unit is not considered impaired. If the carrying amount of a reporting unit exceeds its estimated fair value, an impairment loss is measured and recorded. During the year ended December 31, 2020, due to the impact of COVID-19 and oil and gas market developments on our business, we updated our goodwill impairment assessment as of March 31, 2020. As a result of the evaluation of goodwill, we recognized a $4,231 impairment loss of goodwill associated with the 2017 purchase of the assets of Railtronix and did no t recognize any impairment for the goodwill associated with the Loadcraft Industries Ltd. purchase. The Company did no t recognize any impairments during the years ended December 31, 2021 and 2022. Impairment of Long-Lived Assets and Definite-Lived Intangible Assets Long-lived assets, such as property, plant, equipment and definite-lived intangible assets and ROU Assets, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable, such as insufficient cash flows or plans to dispose of or sell long-lived assets before the end of their previously estimated useful lives. For assets classified as held for use, we first group individual assets based on the lowest level for which identifiable cash flows are largely independent of the cash flows from other assets. We then compare estimated future undiscounted cash flows expected to result from the use and eventual disposition of the asset group to its carrying amount. If the asset group's undiscounted cash flows are less than its carrying amount, we then determine the asset group's fair value by using a discounted cash flow analysis and recognize any resulting impairment. This analysis is based on estimates such as management’s short-term and long-term forecast of operating performance, including revenue growth rates and expected profitability margins, estimates of the remaining useful life and service potential of the assets within the asset group, and a discount rate based on our weighted average cost of capital. An impairment loss is measured and recorded as the amount by which the asset group's carrying amount exceeds its fair value. During the first quarter of 2020, due to the impact on our business of reduced demand and oversupply of oil and natural gas, the Company performed tests for recoverability of the carrying value of these assets using forecasted undiscounted cash flows as of March 31, 2020. As a result of the impairment analysis, undiscounted cash flows as well as the fair value of the assets associated with our Kingfisher Facility were below their carrying values and the Company recognized impairment losses of $37,775, $2,845 and $410 for property, plant and equipment, ROU assets and other receivables, respectively, during the year ended December 31, 2020. These impairments resulted from an accumulation of factors leading to the loss of significant customers, reduced operating activities and earnings. There were no impairments for the years ended December 31, 2022 or 2021. Revenue Recognition The Company recognizes revenue in accordance with ASC Topic 606, Revenues from Contracts with Customers (“ASC Topic 606”). Under ASC Topic 606, revenue recognition is based on the transfer of control, or the customer’s ability to benefit from our services and products in an amount that reflects the consideration expected to be received in exchange for those services and products. The majority of our contracts contain multiple performance obligations, such as work orders containing a combination of equipment, transportation, and labor services. We allocate the transaction price to each performance obligation identified in the contract based on relative stand-alone selling prices, or estimates of such prices, and recognize the related revenue as control of each individual product or service is transferred to the customer, in satisfaction of the corresponding performance obligations. We measure progress using an input method based on resources consumed or expended relative to the total resources expected to be consumed or expended. We assess our customers’ ability and intention to pay, which is based on a variety of factors including historical payment experience and financial condition and we typically charge our customers on a weekly or monthly basis. Contracts with customers are typically on thirty- to sixty-day payment terms. Wellsite Services Revenues for equipment and labor services consist of fixed fees charged to customers for the use of our equipment that unload, store and deliver proppant, water and chemicals at oil and natural gas well sites, which is considered to be our performance obligation. Revenues are recognized over time as the customer uses our systems and we provide supporting labor services. Revenues related to services coordinating the transportation of proppant consist of a fixed rate per ton recognized over time as proppant is transported from a sand mine or transloading facility to our systems, which is considered to be our performance obligation. Revenues for mobilization and transportation of our equipment consist of fixed or pass-through fees that are recognized at a point in time when the system has reached its intended destination, which is considered to be our performance obligation. Other Revenues from inventory software services consist primarily of the fees charged to customers for the use of our Railtronix® inventory management software, which is considered to be our performance obligation. Revenues are recognized over time based on a throughput fee to monitor proppant that is loaded into a railcar, stored at a transload facility or loaded into a truck. Revenues from transloading services consist primarily of the fees charged to customers for transloading and storage of proppant or railcars at our transloading facility, which is considered to be our performance obligation. Revenues are typically recognized over time based on fixed railcar storage fees or a throughput fee per ton for proppant delivered to and transloaded at the facility. Variable consideration typically may relate to discounts, price concessions and incentives. The Company estimates variable consideration based on the amount of consideration we expect to receive. The Company accrues revenue on an ongoing basis to reflect updated information for variable consideration as performance obligations are met. The following table summarizes revenues from our contracts disaggregated by revenue generating activity contained therein for the years ended December 31, 2022, 2021, and 2020: Year Ended December 31, 2022 2021 2020 Wellsite services $ 318,977 $ 158,052 $ 100,796 Other 1,028 1,137 2,180 Total revenue $ 320,005 $ 159,189 $ 102,976 Stock-based Compensation Stock-based compensation cost is measured at the grant date based on the fair value of the award and is amortized to compensation expense on a straight-line basis over the awards’ vesting period, which is generally the requisite service period. For options to purchase Class A common stock, we have historically and consistently calculated fair value using the Black-Scholes option-pricing model. This valuation approach involves significant judgments and estimates, including estimates regarding our future operations, price variation and the risk-free rate of return. Our estimates of these variables are made for the purpose of using the valuation model to determine an expense for each reporting period and are not subsequently adjusted. We recognize expense related to the estimated vesting of our performance share units granted. Forfeitures of stock-based compensation are recognized as they occur. Financial Instruments The carrying value of the Company’s financial instruments, consisting of cash, accounts receivable, notes payable, accounts payable, and insurance premium financing, approximates their fair value due to the short maturity of such instruments. Unless otherwise noted, it is management’s opinion that the Company is not exposed to significant interest, currency or credit risks arising from these financial instruments other than allowance for credit losses described in Accounts Receivable and Allowance for Credit Losses. Fair Value Measurements The Company’s financial assets and liabilities, as well as other recurring and nonrecurring fair value measurements such as goodwill impairment and long lived assets impairment, are to be measured using inputs from the three levels of the fair value hierarchy, of which the first two are considered observable and the last unobservable, which are as follows: ● Level 1—Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date; ● Level 2—Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active or other inputs corroborated by observable market data for substantially the full term of the assets or liabilities; and ● Level 3—Unobservable inputs that reflect the Company’s assumptions that market participants would use in pricing assets or liabilities based on the best information available. Income Taxes Solaris Inc. is a corporation and, as a result, is subject to United States federal, state and local income taxes. For the year ended December 31, 2022, we recognized a combined United States federal and state expense for income taxes of $7,803. For the years ended December 31, 2021 and 2020, we recognized income tax expense of $626 and income tax benefit of $8,969, respectively. Solaris LLC is treated as a partnership for United States federal income tax purposes and therefore does not pay United States federal income tax on its taxable income. Instead, the Solaris LLC unitholders, including Solaris Inc., are liable for United States federal income tax on their respective shares of Solaris LLC’s taxable income reported on the unitholders’ United States federal income tax returns. Solaris LLC is liable for income taxes in those states not recognizing its status as a partnership for United States federal income tax purposes. We recognize deferred tax assets and liabilities for the expected future tax consequences of events included in the condensed consolidated financial statements. Under this method, we determine deferred tax assets and liabilities on the basis of the differences between the book value and tax bases of assets and liabilities by using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period in which the enactment date occurs. We recognize deferred tax assets to the extent we believe these assets are more-likely-than-not to be realized. In making such a determination, we consider all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax planning strategies and recent results of operations. We record uncertain tax positions on the basis of a two-step process in which (i) we determine whether it is more-likely-than-not the tax positions will be sustained on the basis of the technical merits of the position and (ii) for those tax positions meeting the more-likely-than-not recognition threshold, we recognize the largest amount of tax benefit that is more than 50% likely to be realized upon ultimate settlement with the related tax authority. Interest and penalties related to income taxes are included in the benefit (provision) for income taxes in our consolidated statement of operations. We have not incurred any significant interest or penalties related to income taxes in any of the periods presented. See Note 10. “Income Taxes” for additional information regarding income taxes. Payable Related to the Tax Receivable Agreement Solaris Inc. entered into a Tax Receivable Agreement (the “Tax Receivable Agreement”) with the members of Solaris LLC (each such person and any permitted transferee, a “TRA Holder,” and together, the “TRA Holders”). This agreement generally provides for the payment by Solaris Inc. to each TRA Holder of 85% of the net cash savings, if any, in United States federal, state and local income tax or franchise tax that Solaris Inc. actually realizes (computed using simplifying assumptions to address the impact of state and local taxes) or is deemed to realize in certain circumstances in periods after the IPO as a result of (i) certain increases in tax basis that occur as a result of Solaris Inc.’s acquisition (or deemed acquisition for United States federal income tax purposes) of all or a portion of such TRA Holder's Solaris LLC Units in connection with the IPO or pursuant to the exercise of the Redemption Right or the Call Right (each as defined in the Solaris LLC Agreement) and (ii) imputed interest deemed to be paid by Solaris Inc. as a result of, and additional tax basis arising from, any payments Solaris Inc. makes under the Tax Receivable Agreement. Solaris Inc. will retain the benefit of the remaining 15% of these cash savings. As of December 31, 2022 and 2021, Solaris Inc. recorded a payable related to the Tax Receivable Agreement of $72,622 and $73,102, respectively, $1,092 and $1,210 of which has been recorded as a current liability. The decrease in payables related to the Tax Receivable Agreement is a result of a state tax rate change, which reduced the liability $663, partially offset by an increase related to Solaris Inc.’s acquisition (or deemed acquisition for United States federal income tax purposes) of Solaris LLC Units from TRA Holders during the year ended December 31, 2021. If the Tax Receivable Agreement were terminated immediately after the filing of this Annual Report the estimated termination payments would, in the aggregate, be approximately $74,581 (calculated using a discount rate equal to one year Environmental Matters The Company is subject to various federal, state and local laws and regulations relating to the protection of the environment. Management has established procedures for the ongoing evaluation of the Company’s operations, to identify potential environmental exposures and to comply with regulatory policies and procedures. Environmental expenditures that relate to current operations are expensed or capitalized as appropriate. Expenditures that relate to an existing condition caused by past operations and do not contribute to current or future revenue generation are expensed as incurred. Liabilities are recorded when environmental costs are probable, and the costs can be reasonably estimated. The Company maintains insurance which may cover in whole or in part certain environmental expenditures. As of December 31, 2022 and 2021, no liabilities were recorded with respect to any environmental matters as no environmental costs were deemed probable. Segment Information Operating segments are identified as components of an enterprise about which separate discrete financial information is available for evaluation by the chief operating decision maker, or decision-making group, in making decisions on how to allocate resources and assess performance. The Company’s chief operating decision maker is the Chief Executive Officer. The Company and the Chief Executive Officer view the Company’s operations and manage its business as one operating segment. All long-lived assets of the Company reside in the United States. Accounting Standards Recently Issued But Not Yet Adopted In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform, which provided temporary optional guidance to companies impacted by the transition away from the London Interbank Offered Rate (“LIBOR”). The guidance provided certain expedients and exceptions to applying GAAP in order to lessen the potential accounting burden when contracts, hedging relationships, and other transactions that reference LIBOR as a benchmark rate are modified. The original guidance expired on December 31, 2022; however, ASU No. 2022-06 extended the effective date of the guidance to December 31, 2024. The Company is currently assessing the impact of the LIBOR transition and this ASU on the Company’s financial statements and any agreements utilizing LIBOR, including the Tax Receivable Agreement, but does not currently expect to have a material impact on our financial statements. |