Summary of Significant Accounting Policies	6 Months Ended
Jun. 30, 2019
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies The information presented below supplements the complete description of our significant accounting policies disclosed in our 2018 Form 10-K, filed with the SEC on March 14, 2019. Basis of Presentation and Consolidation The accompanying unaudited quarterly condensed consolidated financial statements (“interim statements”) of the Company are presented in accordance with the rules and regulations of the Securities and Exchange Commission for quarterly reports on Form 10-Q and therefore do not include all the information and notes required by GAAP. In the opinion of management, all adjustments and disclosures necessary for a fair presentation of these interim statements have been included. All adjustments are of a normal recurring nature. The results reported in these interim statements are not necessarily indicative of the results that may be reported for the entire year. The consolidated balance sheet as of December 31, 2018 was derived from the audited consolidated financial statements as of and for the year ended December 31, 2018. These interim statements should be read in conjunction with the Company’s consolidated financial statements for the year ended December 31, 2018. Certain 2018 balance sheet items have been reclassified to conform to the current financial statement presentation. These reclassifications have no effect on previously reported net income. Going Concern Management evaluates at each annual and interim period whether there are conditions or events, considered in the aggregate, that raise substantial doubt about the Company’s ability to continue as a going concern within one year after the date that the consolidated financial statements are issued. Management’s evaluation is based on relevant conditions and events that are known and reasonably knowable at the date that the consolidated financial statements are issued. The Credit Facility matures on June 30, 2020 and without additional sources of capital or refinancing of the Credit Facility, the maturity of the Credit Facility raises substantial doubt about the Company’s ability to continue as a going concern, which means that Smart Sand may be unable to meet its obligations as they become due. The Company is currently pursuing plans to refinance the Credit Facility and extend the current obligations beyond one year as mitigation to the substantial doubt raised regarding the Company’s ability to continue as a going concern, however there can be no assurance that sufficient liquidity can be raised or that such a transaction can be completed prior to the maturity date of the Credit Facility or that any refinancing would be on favorable terms to the Company. The Credit Facility has been recorded as a current liability in the consolidated balance sheet as of June 30, 2019. Recent Accounting Pronouncements Adopted In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), and related amendments, which replaced the existing guidance in ASC 840, Leases. ASU 2016-02 requires lessees to recognize most leases on their balance sheets as lease liabilities with corresponding right-of-use assets. The new lease standard does not substantially change lessor accounting. The new standard is effective for interim and annual reporting periods beginning after December 15, 2018. The Company adopted ASU 2016-02 and its related updates using the optional transition practical expedients, which allow the Company to use the existing lease population, classification and determination of initial direct costs when calculating the lease liability and right-of-use asset balances. The Company also used the optional transition method, which allows the Company to initially apply the new standard at the adoption date and recognize a cumulative-effect adjustment to the opening balance of retained earnings. There was no adjustment made to the opening balance of retained earnings. The Company has implemented new accounting policies and software to facilitate the recording and reporting of lease transactions and balances. The Company recorded initial operating right-of-use assets of $35,939 and related lease liabilities of $36,484 on its consolidated balance sheet on January 1, 2019. New disclosures are included in Note 9 to these interim financial statements. Not yet adopted In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820), which modifies disclosure requirements for fair value measurements by removing the disclosure of the valuation process for Level 3 fair value measurements, among other disclosure modifications. The guidance is effective for the Company for financial statement periods beginning after December 15, 2019, although early adoption is permitted. Companies are permitted to remove or modify disclosures upon issuance while delaying adoption of the additional disclosures. The Company is currently evaluating the effects of ASU 2018-13 on its consolidated financial statements. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326), which modifies how companies recognize expected credit losses on financial instruments and other commitments to extend credit held by an entity at each reporting date. Existing GAAP requires an “incurred loss” methodology whereby companies are prohibited from recording an expected loss until it is probable that the loss has been incurred. ASU 2016-13 requires companies to use a methodology that reflects current expected credit losses (“CECL”) and requires consideration of a broad range of reasonable and supportable information to record and report credit loss estimates, even when the CECL is remote. Companies will be required to record the allowance for credit losses and deduct that amount from the basis of the asset and a related expense will be recognized in selling, general and administrative expenses on the income statement, similar to bad debt expense under existing GAAP. There is much latitude given to entities in determining the methodology for calculating the CECL. The guidance is effective for the Company for financial statement periods beginning after December 15, 2019, although early adoption is permitted. While the Company is still in the process of evaluating the effects of ASU 2016-13 and its related updates on its consolidated financial statements, it believes the primary effect, will be an allowance recorded against its accounts and unbilled receivables on its balance sheet and related expense on its income statement upon adoption. The Company cannot determine the financial impact on its consolidated financial statements upon adoption as its accounts and unbilled receivables balances are affected by ongoing transactions with customers. Changes to Accounting Policies Leases - Lessee The Company uses leases primarily to procure certain office space, railcars and heavy equipment as part of its operations. The majority of its lease payments are fixed and determinable with certain of its lease payments containing immaterial variable payments based on the number of hours the equipment is used. Certain of its leases have options that allow for renewal at market rates, purchase at fair market value or termination of the lease. The Company must determine that it is reasonably certain that a lease option will be exercised for such an option to be included in the right-of-use asset or lease liability. The Company is not reasonably certain that any of its lease options will be exercised and, as such, has not included those options in its right-of-use assets or lease liabilities. Certain of its equipment leases contain residual value guarantees which guarantee various parts of heavy equipment will have a remaining life when the equipment is returned to the lessor. It is possible that the Company could owe additional amounts to the lessor upon return of equipment. There are no restrictions or covenants imposed by any of the Company’s leases. The Company evaluates contracts during the negotiation process and when they are executed to determine the existence of leases. A contract contains a lease when it conveys the right to use property, plant or equipment for a stated period of time in exchange for consideration. Leases with an initial term of twelve months or less are not recorded on the balance sheet. The Company recognizes lease expense on a straight-line basis over the term of the lease. The Company evaluates the classification of its leases at the commencement date and includes both lease and non-lease components in its calculation of consideration in the contract for all classes of operating leases. The Company applies a single discount rate to all operating leases, which is its incremental borrowing rate. The Company determined its incremental borrowing rate based on an average of collateralized borrowing rates offered by various lenders. The Company considered the nature of the assets and the life of the leases and determined that there is no significant difference in the incremental borrowing rate among its classes of assets. See Note 9 — Leases for additional disclosures regarding the Company’s leasing activity. Leases - Lessor The Company manufactures SmartSystemsand offers the equipment for lease. The Company negotiates the terms of its leases on a case-by-case basis. There are no significant options that are reasonably certain to be exercised, residual value guarantees, restrictions or covenants in its lease contracts and have, therefore, not been included in its accounting for the leases. There are currently no contracts in place that meet the definition of a lease.

Summary of Significant Accounting Policies

The information presented below supplements the complete description of our significant accounting policies disclosed in our 2018 Form 10-K, filed with the SEC on March 14, 2019.

Basis of Presentation and Consolidation

The accompanying unaudited quarterly condensed consolidated financial statements (“interim statements”) of the Company are presented in accordance with the rules and regulations of the Securities and Exchange Commission for quarterly reports on Form 10-Q and therefore do not include all the information and notes required by GAAP. In the opinion of management, all adjustments and disclosures necessary for a fair presentation of these interim statements have been included. All adjustments are of a normal recurring nature. The results reported in these interim statements are not necessarily indicative of the results that may be reported for the entire year. The consolidated balance sheet as of December 31, 2018 was derived from the audited consolidated financial statements as of and for the year ended December 31, 2018. These interim statements should be read in conjunction with the Company’s consolidated financial statements for the year ended December 31, 2018.

Certain 2018 balance sheet items have been reclassified to conform to the current financial statement presentation. These reclassifications have no effect on previously reported net income.

Going Concern

Management evaluates at each annual and interim period whether there are conditions or events, considered in the aggregate, that raise substantial doubt about the Company’s ability to continue as a going concern within one year after the date that the consolidated financial statements are issued. Management’s evaluation is based on relevant conditions and events that are known and reasonably knowable at the date that the consolidated financial statements are issued. The Credit Facility matures on June 30, 2020 and without additional sources of capital or refinancing of the Credit Facility, the maturity of the Credit Facility raises substantial doubt about the Company’s ability to continue as a going concern, which means that Smart Sand may be unable to meet its obligations as they become due. The Company is currently pursuing plans to refinance the Credit Facility and extend the current obligations beyond one year as mitigation to the substantial doubt raised regarding the Company’s ability to continue as a going concern, however there can be no assurance that sufficient liquidity can be raised or that such a transaction can be completed prior to the maturity date of the Credit Facility or that any refinancing would be on favorable terms to the Company. The Credit Facility has been recorded as a current liability in the consolidated balance sheet as of June 30, 2019.

Recent Accounting Pronouncements

Adopted

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), and related amendments, which replaced the existing guidance in ASC 840, Leases. ASU 2016-02 requires lessees to recognize most leases on their balance sheets as lease liabilities with corresponding right-of-use assets. The new lease standard does not substantially change lessor accounting. The new standard is effective for interim and annual reporting periods beginning after December 15, 2018. The Company adopted ASU 2016-02 and its related updates using the optional transition practical expedients, which allow the Company to use the existing lease population, classification and determination of initial direct costs when calculating the lease liability and right-of-use asset balances. The Company also used the optional transition method, which allows the Company to initially apply the new standard at the adoption date and recognize a cumulative-effect adjustment to the opening balance of retained earnings. There was no adjustment made to the opening balance of retained earnings. The Company has implemented new accounting policies and software to facilitate the recording and reporting of lease transactions and balances. The Company recorded initial operating right-of-use assets of $35,939 and related lease liabilities of $36,484 on its consolidated balance sheet on January 1, 2019. New disclosures are included in Note 9 to these interim financial statements.

Not yet adopted

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820), which modifies disclosure requirements for fair value measurements by removing the disclosure of the valuation process for Level 3 fair value measurements, among other disclosure modifications. The guidance is effective for the Company for financial statement periods beginning after December 15, 2019, although early adoption is permitted. Companies are permitted to remove or modify disclosures upon issuance while delaying adoption of the additional disclosures. The Company is currently evaluating the effects of ASU 2018-13 on its consolidated financial statements.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326), which modifies how companies recognize expected credit losses on financial instruments and other commitments to extend credit held by an entity at each reporting date. Existing GAAP requires an “incurred loss” methodology whereby companies are prohibited from recording an expected loss until it is probable that the loss has been incurred. ASU 2016-13 requires companies to use a methodology that reflects current expected credit losses (“CECL”) and requires consideration of a broad range of reasonable and supportable information to record and report credit loss estimates, even when the CECL is remote. Companies will be required to record the allowance for credit losses and deduct that amount from the basis of the asset and a related expense will be recognized in selling, general and administrative expenses on the income statement, similar to bad debt expense under existing GAAP. There is much latitude given to entities in determining the methodology for calculating the CECL. The guidance is effective for the Company for financial statement periods beginning after December 15, 2019, although early adoption is permitted. While the Company is still in the process of evaluating the effects of ASU 2016-13 and its related updates on its consolidated financial statements, it believes the primary effect, will be an allowance recorded against its accounts and unbilled receivables on its balance sheet and related expense on its income statement upon adoption. The Company cannot determine the financial impact on its consolidated financial statements upon adoption as its accounts and unbilled receivables balances are affected by ongoing transactions with customers.

Changes to Accounting Policies

Leases - Lessee

The Company uses leases primarily to procure certain office space, railcars and heavy equipment as part of its operations. The majority of its lease payments are fixed and determinable with certain of its lease payments containing immaterial variable payments based on the number of hours the equipment is used. Certain of its leases have options that allow for renewal at market rates, purchase at fair market value or termination of the lease. The Company must determine that it is reasonably certain that a lease option will be exercised for such an option to be included in the right-of-use asset or lease liability. The Company is not reasonably certain that any of its lease options will be exercised and, as such, has not included those options in its right-of-use assets or lease liabilities. Certain of its equipment leases contain residual value guarantees which guarantee various parts of heavy equipment will have a remaining life when the equipment is returned to the lessor. It is possible that the Company could owe additional amounts to the lessor upon return of equipment. There are no restrictions or covenants imposed by any of the Company’s leases.

The Company evaluates contracts during the negotiation process and when they are executed to determine the existence of leases. A contract contains a lease when it conveys the right to use property, plant or equipment for a stated period of time in exchange for consideration. Leases with an initial term of twelve months or less are not recorded on the balance sheet. The Company recognizes lease expense on a straight-line basis over the term of the lease. The Company evaluates the classification of its leases at the commencement date and includes both lease and non-lease components in its calculation of consideration in the contract for all classes of operating leases.

The Company applies a single discount rate to all operating leases, which is its incremental borrowing rate. The Company determined its incremental borrowing rate based on an average of collateralized borrowing rates offered by various lenders. The Company considered the nature of the assets and the life of the leases and determined that there is no significant difference in the incremental borrowing rate among its classes of assets. See Note 9 — Leases for additional disclosures regarding the Company’s leasing activity.

Leases - Lessor

The Company manufactures SmartSystemsand offers the equipment for lease. The Company negotiates the terms of its leases on a case-by-case basis. There are no significant options that are reasonably certain to be exercised, residual value guarantees, restrictions or covenants in its lease contracts and have, therefore, not been included in its accounting for the leases. There are currently no contracts in place that meet the definition of a lease.