10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 

 _____________________________________________________

FORM 10-Q

 _____________________________________________________ 

x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the Quarterly Period Ended June 30, 2019

OR

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the Transition Period from ___ to ___

Commission file number 001-37936

SMART SAND, INC.

(Exact name of registrant as specified in its charter)

Delaware	45-2809926
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification Number)
1725 Hughes Landing Blvd, Suite 800
The Woodlands, Texas 77380	(281) 231-2660
(Address of principal executive offices)	(Registrant’s telephone number)

Securities registered pursuant to Section 12(b) of the Act:
Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, par value $0.001 per share	SND	Nasdaq Global Select Market

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports) and (2) has been subject to such filing requirements for the past 90 days.   Yes ý No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).   Yes ý No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act. 

Large accelerated filer  ☐ Accelerated filer  ý Non-accelerated filer  ☐ Smaller reporting company ý Emerging Growth Company ý

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ý

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).   Yes ☐ No ý

Number of shares of common stock outstanding, par value $0.001 per share, as of July 31, 2019: 41,318,887

TABLE OF CONTENTS

		PAGE
PART I	FINANCIAL INFORMATION
ITEM 1.	Financial Statements	3
	Condensed Consolidated Balance Sheets as of June 30, 2019 (Unaudited) and December 31, 2018	3
	Condensed Consolidated Income Statements for the Three and Six Months Ended June 30, 2019 and 2018 (Unaudited)	4
	Condensed Consolidated Statements of Comprehensive Income for the Three and Six Months Ended June 30, 2019 and 2018 (Unaudited)	5
	Condensed Consolidated Statements of Changes in Stockholders’ Equity for the Three and Six Months Ended June 30, 2019 and 2018 (Unaudited)	6
	Condensed Consolidated Statements of Cash Flows for the Six Months Ended June 30, 2019 and 2018 (Unaudited)	8
	Notes to the Condensed Consolidated Financial Statements (Unaudited)	9
ITEM 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	23
ITEM 3.	Quantitative and Qualitative Disclosures about Market Risk	31
ITEM 4.	Controls and Procedures	32
PART II	OTHER INFORMATION	33
ITEM 1.	Legal Proceedings	33
ITEM 1A.	Risk Factors	33
ITEM 2.	Unregistered Sales of Equity Securities and Use of Proceeds	33
ITEM 3.	Defaults upon Senior Securities	33
ITEM 4.	Mine Safety Disclosures	33
ITEM 5.	Other Information	33
ITEM 6.	Exhibits	34
SIGNATURES		35

1

Certain Definitions

The following definitions apply throughout this quarterly report unless the context requires otherwise:

“We”, “Us”, “Company”, “Smart Sand” or “Our”	Smart Sand, Inc., a company organized under the laws of Delaware, and its subsidiaries.
“shares”, “stock”	The common stock of Smart Sand, Inc., nominal value $0.001 per share.
“Credit Agreement”, “Credit Facility”	On December 8, 2016, the Company entered into a $45 million 3-year senior secured revolving credit facility under a revolving credit agreement with Jefferies Finance LLC as administrative and collateral agent (the “Credit Agreement”). This credit facility was amended: (i) on April 8, 2018, to increase our total borrowing capacity to $60 million; (ii) on July 13, 2018, to, among other things, (A) increase the limit on our ability to sell, transfer or dispose of assets, subject to certain considerations from an aggregate amount of $25 million to $55 million, (B) increase the limit on our ability to incur capital lease obligations from an aggregate principal amount of $15 million to $30 million, and (C) exclude certain current and future earn-out obligations from the definition of indebtedness in the Credit Agreement; and (iii) on February 22, 2019, to, among other things (A) extend the maturity date to June 30, 2020, and (B) decrease our total borrowing capacity to $55 million by June 30, 2019, $52.5 million by September 30, 2019 and $50 million by December 31, 2019 (“Credit Facility”).
“Exchange Act”	The Securities Exchange Act of 1934, as amended.
“Securities Act”	The Securities Act of 1933, as amended.
“FCA”, “DAT”, “DAP”	Free Carrier, Delivered at Terminal, Delivered at Place, respectively, Incoterms 2010.
“FASB”, “ASU”, “ASC”, “GAAP”	Financial Accounting Standards Board, Accounting Standards Update, Accounting Standards Codification, Accounting Principles Generally Accepted in the United States, respectively.

2

PART I – FINANCIAL INFORMATION

ITEM 1.  FINANCIAL STATEMENTS

SMART SAND, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

	June 30, 2019			December 31, 2018
	(unaudited)
	(in thousands, except share amounts)
Assets
Current assets:
Cash and cash equivalents	$	1,253		$	1,466
Accounts receivable, net	45,652			18,989
Unbilled receivables	7,311			7,823
Inventories	12,381			18,575
Prepaid expenses and other current assets	1,902			3,243
Total current assets	68,499			50,096
Property, plant and equipment, net	250,978			248,396
Operating right-of-use assets	32,417			—
Intangible assets, net	17,233			18,068
Other assets	3,374			3,732
Total assets	$	372,501		$	320,292
Liabilities and Stockholders’ Equity
Current liabilities:
Accounts payable	$	8,050		$	11,336
Accrued and other expenses	10,237			8,392
Deferred revenue	3,401			4,095
Current portion of long-term debt	40,238			829
Current portion of operating lease liabilities	13,339			—
Total current liabilities	75,265			24,652
Long-term debt, net of current portion	6,396			47,893
Long-term operating lease liabilities, net of current portion	19,702			—
Long-term deferred tax liabilities, net	22,185			17,898
Asset retirement obligation	15,185			13,322
Contingent consideration	4,400			7,167
Total liabilities	143,133			110,932
Commitments and contingencies (Note 16)
Stockholders’ equity
Common stock, $0.001 par value, 350,000,000 shares authorized; 40,949,849 issued and 40,209,409 outstanding at June 30, 2019; 40,673,513 issued and 39,974,478 outstanding at December 31, 2018	40			40
Treasury stock, at cost, 740,440 and 699,035 shares at June 30, 2019 and December 31, 2018, respectively	(2,978		)	(2,839		)
Additional paid-in capital	163,797			162,195
Retained earnings	68,586			50,277
Accumulated other comprehensive loss	(77		)	(313		)
Total stockholders’ equity	229,368			209,360
Total liabilities and stockholders’ equity	$	372,501		$	320,292

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

3

SMART SAND, INC.

CONDENSED CONSOLIDATED INCOME STATEMENTS

(UNAUDITED)

	Three Months Ended June 30,						Six Months Ended June 30,
	2019			2018			2019			2018
	(in thousands, except per share amounts)
Revenues	$	67,941		$	54,448		$	119,716		$	97,076
Cost of goods sold	43,068			34,678			83,673			70,091
Gross profit	24,873			19,770			36,043			26,985
Operating expenses:
Salaries, benefits and payroll taxes	2,798			2,790			5,508			5,362
Depreciation and amortization	655			476			1,331			664
Selling, general and administrative	2,790			3,595			5,590			6,696
Change in the estimated fair value of contingent consideration	(575		)	—			(1,542		)	—
Total operating expenses	5,668			6,861			10,887			12,722
Operating income	19,205			12,909			25,156			14,263
Other income (expenses):
Interest expense, net	(994		)	(500		)	(1,975		)	(680		)
Other income	37			25			74			58
Total other income (expenses), net	(957		)	(475		)	(1,901		)	(622		)
Income before income tax expense	18,248			12,434			23,255			13,641
Income tax expense	3,972			2,413			4,946			2,645
Net income	$	14,276		$	10,021		$	18,309		$	10,996
Net income per common share:
Basic	$	0.36		$	0.25		$	0.46		$	0.27
Diluted	$	0.36		$	0.25		$	0.46		$	0.27
Weighted-average number of common shares:
Basic	40,074			40,499			40,035			40,455
Diluted	40,173			40,550			40,117			40,550

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

4

SMART SAND, INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(UNAUDITED)

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
	(in thousands)
Net income	$	14,276	$	10,021	$	18,309	$	10,996
Other comprehensive income:
Foreign currency translation adjustment	91		76		236		76
Comprehensive income	$	14,367	$	10,097	$	18,545	$	11,072

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

5

SMART SAND, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY

(UNAUDITED)

Six months ended June 30, 2019

	Common Stock				Treasury Stock				Additional Paid-in Capital				Accumulated Other Comprehensive Loss			Total Stockholders’ Equity
	Outstanding Shares		Par Value		Shares	Amount					Retained Earnings
	(in thousands, except share amounts)
Balance at December 31, 2018	39,974,478		$	40	699,035	$	(2,839	)	$	162,195	$	50,277	$	(313	)	$	209,360
Foreign currency translation adjustment	—		—		—	—			—		—		145			145
Vesting of restricted stock	30,729		—		—	—			—		—		—			—
Stock-based compensation	—		—		—	—			790		—		—			790
Employee stock purchase plan compensation	—		—		—	—			9		—		—			9
Employee stock purchase plan issuance	20,954		—		—	—			40		—		—			40
Restricted stock buy back	(5,714	)	—		5,714	(23		)	—		—		—			(23		)
Net income	—		—		—	—			—		4,033		—			4,033
Balance at March 31, 2019	40,020,447		40		704,749	(2,862		)	163,034		54,310		(168		)	214,354
Foreign currency translation adjustment	—		—		—	—			—		—		91			91
Vesting of restricted stock	224,653		—		—	—			—		—		—			—
Stock-based compensation	—		—		—	—			754		—		—			754
Employee stock purchase plan compensation	—		—		—	—			9		—		—			9
Employee stock purchase plan issuance	—		—		—	—			—		—		—			—
Restricted stock buy back	(35,691	)	—		35,691	(116		)	—		—		—			(116		)
Net income	—		—		—	—			—		14,276		—			14,276
Balance at June 30, 2019	40,209,409		$	40	740,440	$	(2,978	)	$	163,797	$	68,586	$	(77	)	$	229,368

6

SMART SAND, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY (Continued)

(UNAUDITED)

Six months ended June 30, 2018

	Common Stock				Treasury Stock				Additional Paid-in Capital				Accumulated Other Comprehensive Loss		Total Stockholders’ Equity
	Outstanding Shares		Par Value		Shares	Amount					Retained Earnings
	(in thousands, except share amounts)
December 31, 2017	40,393,033		$	40	81,052	$	(666	)	$	159,059	$	31,589	$	—	$	190,022
Vesting of restricted stock	96,713		—		—	—			—		—		—		—
Stock-based compensation	—		—		—	—			610		—		—		610
Employee stock purchase plan issuance	9,639		—		—	—			70		—		—		70
Restricted stock buy back	(8,822	)	—		8,822	(54		)	—		—		—		(54		)
Net income	—		—		—	—			—		975		—		975
Balance at March 31, 2018	40,490,563		40		89,874	(720		)	159,739		32,564		—		191,623
Foreign currency translation adjustment	—		—		—	—			—		—		76		76
Vesting of restricted stock	59,400		—		—	—			—		—		—		—
Stock-based compensation	—		—		—	—			650		—		—		650
Employee stock purchase plan compensation	—		—		—	—			38		—		—		38
Employee stock purchase plan issuance	—		—		—	—			1		—		—		1
Restricted stock buy back	(20,781	)	—		20,781	(119		)	—		—		—		(119		)
Net income	—		—		—	—			—		10,021		—		10,021
Balance at June 30, 2018	40,529,182		$	40	110,655	$	(839	)	$	160,428	$	42,585	$	76	$	202,290

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

7

SMART SAND, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(UNAUDITED)

	Six Months Ended June 30,
	2019			2018
	(in thousands)
Operating activities:
Net income	$	18,309		$	10,996
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and accretion of asset retirement obligation	12,501			7,359
Amortization of intangible assets	837			284
Asset retirement obligation settlement	(1,883		)	(1,783		)
Amortization of deferred financing cost	117			138
Accretion of debt discount	331			116
Deferred income taxes	4,287			2,647
Stock-based compensation, net	1,544			1,298
Employee stock purchase plan compensation	18			—
Change in contingent consideration fair value	(1,542		)	—
Changes in assets and liabilities, net of effects of acquisitions:
Accounts receivable	(26,663		)	(597		)
Unbilled receivables	512			(3,715		)
Inventories	6,194			(315		)
Prepaid expenses and other assets	1,587			(2,975		)
Deferred revenue	(694		)	4,805
Accounts payable	(1,977		)	(3,057		)
Accrued and other expenses	3,925			3,712
Net cash provided by operating activities	17,403			18,913
Investing activities:
Acquisition of businesses, net of cash acquired	—			(29,878		)
Purchases of property, plant and equipment	(13,869		)	(66,841		)
Net cash used in investing activities	(13,869		)	(96,719		)
Financing activities:
Proceeds from the issuance of notes payable	4,696			—
Repayments of notes payable	(734		)	(288		)
Payments under equipment financing obligations	(50		)	(140		)
Payment of deferred financing and debt issuance costs	(835		)	(146		)
Proceeds from revolving credit facility	22,750			59,000
Repayment of revolving credit facility	(28,250		)	(14,000		)
Payment of contingent consideration	(1,225		)	—
Proceeds from equity issuance	40			71
Purchase of treasury stock	(139		)	(173		)
Net cash (used in) provided by financing activities	(3,747		)	44,324
Effect of exchange rate changes on cash and cash equivalents	—			—
Net decrease in cash and cash equivalents	(213		)	(33,482		)
Cash and cash equivalents at beginning of year	1,466			35,227
Cash and cash equivalents at end of period	$	1,253		$	1,745
Supplemental disclosure of cash flow information
Non-cash investing activities:
Contingent consideration	$	—		$	9,200
Asset retirement obligation	$	3,301		$	2,086
Non-cash financing activities:
Capitalized expenditures in accounts payable and accrued expenses	$	1,237		$	6,585

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

8

SMART SAND, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(IN THOUSANDS, EXCEPT PER SHARE DATA)

(UNAUDITED)

NOTE 1 — Organization and Nature of Business

Smart Sand, Inc. and its subsidiaries are headquartered in The Woodlands, Texas. The Company was incorporated in July 2011, and is a fully integrated frac sand supply and services company, offering complete mine to wellsite logistics solutions. The Company is engaged in the excavation, processing and sale of industrial sand, or proppant, for use in hydraulic fracturing operations for the oil and natural gas industry. Its integrated Oakdale facility, with on-site rail infrastructure and wet and dry sand processing facilities, has access to two Class I rail lines that enables the Company to process and cost-effectively deliver products to its customers. The Company also offers proppant logistics solutions to its customers through, among other things, its in-basin transloading terminal and its SmartSystems^TM wellsite proppant storage solution capabilities.

The Company completed construction of the first phase of its mine and processing facility in Oakdale, Wisconsin and commenced operations in July 2012, and subsequently expanded its operations in 2014, 2015 and 2018 to the current annual processing capacity of approximately 5.5 million tons.

On March 15, 2018, the Company acquired the rights to operate a unit train capable transloading terminal in Van Hook, North Dakota to service the Bakken Formation in the Williston Basin and began providing Northern White Sand in-basin in April 2018.

On June 1, 2018, the Company acquired substantially all of the assets of Quickthree Solutions, Inc. (“Quickthree”), a manufacturer of portable vertical proppant storage solution systems. This is now part of our SmartSystems proppant storage solutions under which we offer various solutions that create efficiencies, flexibility, enhanced safety and reliability for customers by providing the capability to unload, store and deliver proppant at the wellsite, as well as the ability to rapidly set up, takedown and transport the entire system. The SmartDepot^TM silo system includes passive and active dust suppression technology, along with the capability of a gravity-fed operation.

NOTE 2 — 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.

9

SMART SAND, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(IN THOUSANDS, EXCEPT PER SHARE DATA)

(UNAUDITED)

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.

10

SMART SAND, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(IN THOUSANDS, EXCEPT PER SHARE DATA)

(UNAUDITED)

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.

NOTE 3 — Acquisitions

Asset Acquisition - Van Hook Crude Terminal, LLC

The acquisition of the assets of Van Hook Crude Terminal, LLC occurred on March 15, 2018. The Company acquired all of the rights, title, and interest in certain properties and assigned contracts for a total consideration of $15,549 in cash. The acquisition cost has been allocated to the Company’s fixed assets as set forth below.

Machinery, equipment and tooling	$	1,478
Plant and building	1,407
Railroad and sidings	9,926
Land improvements	2,738
Total assets acquired	$	15,549

Business Combination - Quickthree Solutions Inc.

On June 1, 2018, the Company acquired substantially all of the assets of Quickthree, a manufacturer of portable vertical frac sand storage solution systems that has been integrated into the Company’s SmartSystems offerings.

The aggregate purchase price consisted of approximately $30,000 cash paid at closing, subject to adjustment based upon Quickthree’s closing date working capital, and up to $12,750 in potential earn-out payments over a three-year period after closing. Payment of the earn-out is based upon the production of SmartDepot (formerly known as Quickstand) silos and related equipment during the earn-out period. The closing portion of the purchase price was paid using cash on hand and advances under the Company’s Credit Facility. The Company expects the earn-out portion of the purchase price to be paid using cash on hand, equipment financing options available to the Company and advances under the Company’s Credit Facility. Goodwill in this transaction was attributable to planned expansion into the wellsite proppant storage solutions market, and is fully deductible for tax purposes. The table below presents the calculation of the total purchase consideration.

Base price - cash	$	30,000
Contingent consideration – earnout	9,200
Working capital adjustment	(122		)
Total purchase consideration	$	39,078

11

SMART SAND, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(IN THOUSANDS, EXCEPT PER SHARE DATA)

(UNAUDITED)

The Company’s allocation of the purchase price in connection with the acquisition was calculated as follows:

	Fair Value		Useful Life (in years)
Assets Acquired
Accounts receivable	$	112
Inventory	1,700
Prepaid expenses and other current assets	126
Total current assets acquired	$	1,938
Property, plant and equipment	740
Customer relationships	270		1 year
Developed technology	18,800		13 years
Trade name	900		Indefinite
Goodwill	16,935
Other assets	225
Total non-current assets acquired	37,870
Total assets acquired	$	39,808
Liabilities Assumed
Accounts payable	$	331
Accrued and other expenses	399
Total liabilities assumed	730
Estimated fair value of net assets acquired	$	39,078

There were no acquisition costs for the Quickthree acquisition during the three and six months ended June 30, 2019. Total acquisition costs for the Quickthree acquisition incurred during the three and six months ended June 30, 2018 were $843 and $1,159, respectively, which are included in selling, general and administrative expense in the Company’s condensed consolidated income statements. The purchase price allocation was considered complete as of December 31, 2018.

The goodwill and trade name have been fully impaired as of December 31, 2018. The Company conducts its evaluation of goodwill at the reporting unit level on an annual basis as of December 31 and more frequently if events or circumstances indicate that the carrying value of a reporting unit exceeds its fair value. All of the Company’s operations are in one reporting unit. The Company determined the fair value of its reporting unit using both a market multiples approach and the discounted cash flows method. In the second half of 2018, the Company saw a decline in demand for frac sand, consistent with the industry as a whole, which resulted in a decline in the Company’s stock price near the measurement date. The decline in the Company’s stock price near the measurement date and the relationship between the resulting market capitalization and the equity recorded on the Company’s balance sheet resulted in a full impairment of goodwill as of December 31, 2018.

Contingent Consideration 

The Company determined the fair value of the contingent consideration to be $9,200 at June 1, 2018, the acquisition date and recorded it as a liability in the Company’s unaudited condensed consolidated balance sheets. Each reporting period, the Company reassesses its inputs including market comparable information and management assessments regarding potential future scenarios, then discounts the liabilities to present value. For the three and six months ended June 30, 2019, the Company recorded an adjustment to the fair value of contingent consideration in the amount of $575 and $1,542, respectively, on the condensed consolidated income statements, related to the change in fair value of contingent consideration. The Company will continue to reassess earn-out calculations related to the contingent consideration in future periods.

The Company’s contingent consideration is remeasured at fair value on a recurring basis and is comprised of payments for production of silos and related equipment during the three-year period after the acquisition. Contingent liabilities are valued using significant inputs that are not observable in the market, which are defined as Level 3 inputs according to fair value measurement accounting. The Company used a probability-weighted average between 9 and 52 manufactured SmartDepot

12

SMART SAND, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(IN THOUSANDS, EXCEPT PER SHARE DATA)

(UNAUDITED)

fleets over the earnout period, as the basis of its fair value determination. The actual contingent consideration could vary from the determined amount based on the actual number of SmartDepot silos and related equipment produced and the timing thereof. The Company estimates the fair value of contingent liabilities using a Monte Carlo simulation-based, real option pricing methodology implementation of the Income Approach. This approach utilizes inputs including market comparable information and management assessments regarding potential future scenarios, then discounts the liabilities to present value. The Company believes its estimates and assumptions are reasonable, however, there is significant judgment involved. The Company’s financial instruments remeasured and carried at fair value were as follows:

	June 30, 2019		Level 1		Level 2		Level 3
Contingent consideration	$	4,400	$	—	$	—	$	4,400
Total liabilities	$	4,400	$	—	$	—	$	4,400

The following table provides a summary of changes in the fair value of the Company’s Level 3 financial instruments for the six months ended June 30, 2019.

Balance as of December 31, 2018	$	7,167
Payment of contingent consideration	(1,225		)
Fair value adjustment	(1,542		)
Balance as of June 30, 2019	$	4,400

NOTE 4 — Inventories

Sand inventories consisted of the following:

	June 30, 2019		December 31, 2018
Raw material	$	628	$	1,201
Work in progress	6,067		10,070
Finished goods	4,769		4,648
Spare parts	917		1,356
Total sand inventory	$	12,381	$	17,275

SmartSystems inventory represents work in progress inventory related to existing arrangements at the time the Company acquired Quickthree and consisted of the following:

	June 30, 2019		December 31, 2018
Work in progress	$	—	$	1,300
Total SmartSystems inventory	$	—	$	1,300
Total inventory	$	12,381	$	18,575

13

SMART SAND, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(IN THOUSANDS, EXCEPT PER SHARE DATA)

(UNAUDITED)

NOTE 5 — Property, Plant and Equipment, net

Net property, plant and equipment consisted of:

	June 30, 2019		December 31, 2018
Machinery, equipment and tooling	$	16,080	$	14,858
SmartSystems	9,532		5,286
Vehicles	2,214		1,955
Furniture and fixtures	1,217		1,140
Plant and building	160,413		158,882
Real estate properties	4,855		4,601
Railroad and sidings	27,347		27,347
Land and land improvements	27,421		27,167
Asset retirement obligation	19,770		16,469
Mineral properties	10,075		10,075
Deferred mining costs	1,806		1,806
Construction in progress	25,132		21,619
	305,862		291,205
Less: accumulated depreciation and depletion	54,884		42,809
Total property, plant and equipment, net	$	250,978	$	248,396

Depreciation expense was $6,171 and $3,994 for the three months ended June 30, 2019 and 2018, respectively, and $12,038 and $7,151 for the six months ended June 30, 2019 and 2018, respectively. Depletion expense was $13 and $18 for the three months ended June 30, 2019 and 2018, respectively, and $18 and $20 for the six months ended June 30, 2019 and 2018, respectively.

The Company capitalized no interest expense associated with the construction of new property, plant and equipment for the three and six months ended June 30, 2019 and 2018.

NOTE 6 — Intangible Assets, net

The following table summarizes the Company’s intangible assets as of June 30, 2019 and December 31, 2018:

	Estimated Useful Life (Years)	Gross Carrying Amount at December 31, 2018		Accumulated Amortization		Net Book Value at June 30, 2019
Developed technology	13	$	18,800	$	1,567	$	17,233
Customer relationships	1	270		270		—
		$	19,070	$	1,837	$	17,233

The Company uses the straight-line method to determine the amortization expense for its definite lived intangible assets. The weighted-average remaining useful life for the intangible assets is 11.9 years. Amortization expense related to the purchased intangible assets was $407 and $284 for the three months ended June 30, 2019 and 2018, respectively, and $837 and $284 for the six months ended June 30, 2019 and 2018, respectively. The table below reflects the future estimated amortization expense for amortizable intangible assets as of June 30, 2019.

Remainder of 2019	$	723
2020	1,446
2021	1,446
2022	1,446
2023	1,446
Thereafter	10,726
Total	$	17,233

NOTE 7 — Accrued and Other Expenses

Accrued and other expenses were comprised of the following:

	June 30, 2019		December 31, 2018
Employee related expenses	$	2,993	$	1,894
Accrued construction related expenses	259		948
Accrued professional fees	428		465
Accrued royalties	1,678		1,780
Accrued freight and delivery charges	1,976		2,556
Accrued real estate tax	403		—
Accrued utilities	537		—
Accrued income taxes	634		—
Deferred rent	—		712
Other accrued liabilities	1,329		37
Total accrued liabilities	$	10,237	$	8,392

14

SMART SAND, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(IN THOUSANDS, EXCEPT PER SHARE DATA)

(UNAUDITED)

NOTE 8 — Debt

The current portion of long-term debt consists of the following:

	June 30, 2019		December 31, 2018
Credit Facility	$	38,255	$	—
Finance leases	137		90
Notes payable	1,846		739
Total current portion of long-term debt	$	40,238	$	829

Long-term debt, net of current portion consists of the following:

	June 30, 2019		December 31, 2018
Credit Facility	$	—	$	44,255
Finance leases	498		547
Notes payable	5,898		3,091
Total long-term debt, net of current portion	$	6,396	$	47,893

Credit Facility

On February 22, 2019, we entered into an agreement with the existing lenders on the Credit Facility to, among other things, (i) extend the maturity date of the Credit Facility to June 30, 2020 and (ii) reduce the total capacity to $50,000 by December 31, 2019. The outstanding balance on the Credit Facility is included in long-term liabilities on our consolidated balance sheet at December 31, 2018. As of June 30, 2019 and December 31, 2018, $39,000 and $44,500, respectively, were outstanding under the Credit Facility and the Company was in compliance with all covenants. As of June 30, 2019, the total borrowing capacity is $55,000 with undrawn availability at $16,000. The Credit Facility matures on June 30, 2020 and as such, the Company has included the balance in the current portion of long-term debt as of June 30, 2019. The Company is currently pursuing plans to refinance the Credit Facility and extend the current obligations beyond one year.

As of June 30, 2019 and December 31, 2018, gross deferred financing fees of $1,558 and $728 are presented as a discount to the carrying value of the debt and the unamortized amount is presented as a reduction of current portion of long term debt as of June 30, 2019 and long-term debt, net of current portion, as of December 31, 2018 on the consolidated balance sheets. Certain deferred financing costs incurred when there was no balance on the Credit Facility are included in Other assets line item on the consolidated balance sheet. Accretion of debt discount of $186 and $60 is included in interest expense for the three months ended June 30, 2019 and 2018, respectively. Accretion of debt discount of $331 and $116 is included in interest expense for the six months ended June 30, 2019 and 2018, respectively. Amortization expense of the deferred financing charges of $55 and $78 is included in interest expense for the three months ended June 30, 2019 and 2018, respectively. Amortization expense of the deferred financing charges of $117 and $138 is included in interest expense for the six months ended June 30, 2019 and 2018, respectively.

	June 30, 2019			December 31, 2018
Revolving credit facility	$	39,000		$	44,500
Less: Debt discount, net	(745		)	(245		)
Revolving credit facility, net	$	38,255		$	44,255

15

SMART SAND, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(IN THOUSANDS, EXCEPT PER SHARE DATA)

(UNAUDITED)

NOTE 9 — Leases

Current Period Disclosures under ASC 842

Lessee

At June 30, 2019, the operating and financing components of the Company’s right-of-use assets and lease liabilities on the consolidated balance sheet are as follows:

	Balance Sheet Location	June 30, 2019
Right-of-use assets
Operating	Operating right-of-use assets	$	32,417
Financing	Property, plant and equipment, net	659
Total right-of use assets		$	33,076
Lease liabilities
Operating	Operating lease liabilities, current and long-term portions	$	33,041
Financing	Long-term debt, current and long-term portions	615
Total lease liabilities		$	33,656

Operating lease costs are recorded in a single expense on the income statement and allocated to the right-of-use assets and the related lease liabilities as depreciation expense and interest expense, respectively. Lease cost recognized in the consolidated income statement for the three and six months ended June 30, 2019 is as follows:

	Three Months Ended		Six Months Ended
	June 30, 2019		June 30, 2019
Finance lease cost
Amortization of right-of-use assets	$	34	$	64
Interest on lease liabilities	11		22
Operating lease cost	4,257		7,364
Short-term lease cost	120		134
Total lease cost	$	4,422	$	7,584

16

SMART SAND, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(IN THOUSANDS, EXCEPT PER SHARE DATA)

(UNAUDITED)

Other information related to the Company’s leasing activity for the six months ended June 30, 2019 is as follows:

	Six Months Ended
	June 30, 2019
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows used for finance leases	$	20
Operating cash flows used for operating leases	$	7,288
Financing cash flows used for finance leases	$	58
Right-of-use assets obtained in exchange for new finance lease liabilities	$	55
Right-of-use assets recorded upon adoption	$	35,939
Right-of-use assets obtained in exchange for new operating lease liabilities	$	4,100
Weighted average remaining lease term - finance leases	4.0 years
Weighted average discount rate - finance leases	6.69		%
Weighted average remaining lease term - operating leases	2.9 years
Weighted average discount rate - operating leases	5.50		%

Maturities of the Company’s lease liabilities as of June 30, 2019 are as follows:

Year	Operating Leases			Finance Leases			Total
Remainder of 2019	$	7,864		$	116		$	7,980
2020	12,762			165			12,927
2021	8,847			165			9,012
2022	3,979			151			4,130
2023	1,394			103			1,497
Thereafter	888			—			888
Total cash lease payments	35,734			700			36,434
Less: amounts representing interest	(2,693		)	(85		)	(2,778		)
Total lease liabilities	$	33,041		$	615		$	33,656

Prior period disclosures under ASC 840

Capital Leases

The Company entered into various lease arrangements to lease equipment. Equipment cost of $657 has been capitalized and included in the Company’s property, plant and equipment as of December 31, 2018. Depreciation expense under leased assets was approximately $54 and $109 for the three and six months ended June 30, 2018, respectively.

Operating Leases

Expense related to operating leases and other rental agreements was $3,363 and $6,693 for three and six months ended June 30, 2018, respectively. Lease expense related to railcars is included in cost of goods sold in the condensed consolidated income statements.

17

SMART SAND, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(IN THOUSANDS, EXCEPT PER SHARE DATA)

(UNAUDITED)

NOTE 10 — Asset Retirement Obligation

The Company had a post-closure reclamation and site restoration obligation of $15,185 as of June 30, 2019. The following is a reconciliation of the total reclamation liability for asset retirement obligations.

Balance at December 31, 2018	$	13,322
Additions and revisions of prior estimates	3,301
Accretion expense	445
Settlement of liability	(1,883		)
Balance at June 30, 2019	$	15,185

NOTE 11 — Revenue

Disaggregation of Revenue

The following table presents the Company’s revenues disaggregated by type and percentage of total revenues for the periods indicated.

	Three Months Ended June 30,								Six Months Ended June 30,
	2019				2018				2019				2018
	Revenue		Percentage of Total Revenue		Revenue		Percentage of Total Revenue		Revenue		Percentage of Total Revenue		Revenue		Percentage of Total Revenue
Sand sales revenue	$	26,862	39	%	$	34,626	64	%	$	48,008	40	%	$	56,913	58	%
Reservation revenue	4,500		7	%	5,838		11	%	9,000		8	%	12,466		13	%
Shortfall revenue	16,283		24	%	668		1	%	22,039		18	%	668		1	%
Logistics revenue	20,296		30	%	13,316		24	%	40,669		34	%	27,029		28	%
Total revenues	$	67,941	100	%	$	54,448	100	%	$	119,716	100	%	$	97,076	100	%

The Company recorded $4,095of deferred revenue on the balancesheet on December 31, 2018, of which $1,017 has been recognized in the six months ended June 30, 2019 and the Company expects to recognize an additional $578 in 2019 and the remainder in 2020.

Segment Information

Reportable 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, including the recently acquired logistics assets and wellsite proppant storage solutions business, as one reportable operating segment.

NOTE 12 — Earnings Per Share

Basic net income per share of common stock is computed by dividing net income attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period, excluding the dilutive effects of restricted stock. Diluted net income per share of common stock is computed by dividing the net income attributable to common stockholders by the sum of the weighted-average number of shares of common stock outstanding during the period plus the potential dilutive effects of restricted stock outstanding during the period calculated in accordance with the treasury stock method, although restricted stock is excluded if their effect is anti-dilutive. The number of shares underlying equity-based awards that were excluded from the calculation of diluted earnings per share as their effect would be anti-dilutive was 765 and 670 for the three months ended June 30, 2019 and 2018, respectively. The number of shares underlying equity-based awards that were excluded from the calculation of diluted earnings per share as their effect would be anti-dilutive was 765 and 670 for the six months ended June 30, 2019 and 2018, respectively. The following table reconciles the weighted-average common shares outstanding used in the calculation of basic net income per share to the weighted average common shares outstanding used in the calculation of diluted net income per share.

18

SMART SAND, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(IN THOUSANDS, EXCEPT PER SHARE DATA)

(UNAUDITED)

	Three Months Ended June 30,		Six Months Ended June 30,
	2019	2018	2019	2018
Weighted average common shares outstanding	40,074	40,499	40,035	40,455
Assumed conversion of restricted stock	99	51	82	95
Diluted weighted average common stock outstanding	40,173	40,550	40,117	40,550

NOTE 13 — Stock-Based Compensation

Equity Incentive Plans

In May 2012, the Board approved the 2012 Equity Incentive Plan (“2012 Plan”), which provides for the issuance of equity awards of up to a maximum of 440 shares of the Company’s common stock to employees, non-employee members of the Board, and consultants of the Company. During 2014, the 2012 Plan was amended to provide for the issuance of equity awards of up to 880 shares of the Company’s common stock. The awards can be issued in the form of incentive stock options, non-qualified stock options or restricted stock, and have expiration dates of 5 or 10 years after issuance, depending on whether the recipient already holds above 10% of the voting power of all classes of the Company’s shares. The exercise price will be based on the fair market value of the share on the date of issuance; vesting periods will be determined by the board upon issuance of the equity award. Subsequent to the Company’s initial public offering, no additional equity awards were made under the 2012 Plan.

In November 2016, in connection with its initial public offering, the Company adopted the 2016 Omnibus Incentive Plan (“2016 Plan”) which provides for the issuance of equity awards of up to a maximum of 3,911 shares of the Company’s common stock to employees, non-employee members of the board and consultants of the Company. Together the 2012 Plan and the 2016 Plan are referenced to as the “Plans”.

During the six months ended June 30, 2019 and 2018, 335 and 723 shares of restricted stock were issued under the Plans, respectively. The grant date fair value per share of all the outstanding restricted stock was $2.44 - $19.00. The shares vest over one to four years from their respective grant dates. For equity awards issued under the 2016 Plan, the grant date fair value was either the actual market price of the Company’s shares or an adjusted price using a Monte Carlo simulation for awards subject to the Company’s performance as compared to a defined peer group. For equity awards issued under the 2012 Plan, the grant date fair value was calculated based on a weighted analysis of (i) publicly-traded companies in a similar line of business to the Company (market comparable method)—Level 2 inputs, and (ii) discounted cash flows of the Company—Level 3 inputs. The Company recognized, in operating expenses on the condensed consolidated income statements, $754 and $670 of compensation expense for the restricted stock during the three months ended June 30, 2019 and 2018, respectively. The Company recognized, in operating expenses on the consolidated income statements, $1,544 and $1,260 of compensation expense for the restricted stock during the six months ended June 30, 2019 and 2018, respectively. At June 30, 2019, the Company had unrecognized compensation expense of $4,981 related to granted but unvested stock awards, which is to be recognized as follows:

Remainder of 2019	$	1,304
2020	2,075
2021	1,040
2022	461
2023	101
Total	$	4,981

19

SMART SAND, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(IN THOUSANDS, EXCEPT PER SHARE DATA)

(UNAUDITED)

The following table summarizes restricted stock activity under the Plans from December 31, 2018 through June 30, 2019:

	Number of Shares		Weighted Average
Unvested, December 31, 2018	1,027		$	9.83
Granted	335		$	2.54
Vested	(256	)	$	7.30
Forfeited	(18	)	$	6.38
Unvested, June 30, 2019	1,088		$	9.31

Employee Stock Purchase Plan

Shares of the Company’s common stock may be purchased by eligible employees under the Company’s 2016 Employee Stock Purchase Plan in six-month intervals at a purchase price equal to at least 85% of the lesser of the fair market value of the Company’s common stock on either the first day or the last day of each six-month offering period. Employee purchases may not exceed 20% of their gross compensation during an offering period.

NOTE 14 — Income Taxes

The Company calculates its interim income tax provision by estimating the annual expected effective tax rate and applying that rate to its ordinary year-to-date earnings or loss. In addition, the effect of changes in enacted tax laws, rates or tax status is recognized in the interim period in which the change occurs.

For the three months ended June 30, 2019 and 2018, the effective tax rate was approximately 21.8% and 19.4%, respectively, based on the annual effective tax rate net of discrete federal and state taxes. For the six months ended June 30, 2019 and 2018, the effective tax rate was approximately 21.3% and 19.4%, respectively, based on the annual effective tax rate net of discrete federal and state taxes. For the three and six months ended June 30, 2019 and 2018, the statutory tax rate was 21.0%. The computation of the effective tax rate includes modifications from the statutory rate such as income tax credits, among other items.

In assessing the realizability of deferred tax assets, the Company considered whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the period in which those temporary differences become deductible. At June 30, 2019 and December 31, 2018, based on the Company’s future income projections and reversal of taxable temporary differences, management determined it was more likely than not that the Company will be able to realize the benefits of the deductible temporary differences. As of June 30, 2019 and December 31, 2018, the Company determined no valuation allowance was necessary.

The Company has evaluated its tax positions taken as of June 30, 2019 and December 31, 2018 and believes all positions taken would be upheld under examination from income taxing authorities. Therefore, no liability for the effects of uncertain tax positions has been recorded in the accompanying consolidated balance sheets as of June 30, 2019 or December 31, 2018. The Company is open to examination by taxing authorities beginning with the 2014 tax year.

NOTE 15 — Concentrations

As of June 30, 2019, four customers accounted for 89% of the Company’s total accounts receivable. As of December 31, 2018, four customers accounted for 89% of the Company’s total accounts receivable.

During the three months ended June 30, 2019, 62% of the Company’s revenues were earned from three customers. During the three months ended June 30, 2018, 64% of the Company’s revenues were earned from four customers. During the six months ended June 30, 2019, 60% of the Company’s revenues were earned from three customers. During the six months ended June 30, 2018, 65% of the Company’s revenues were earned from four customers.

As of June 30, 2019, two vendors accounted for 37% of the Company’s accounts payable.  As of December 31, 2018, one vendor accounted for 16% of the Company’s accounts payable.

20

SMART SAND, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(IN THOUSANDS, EXCEPT PER SHARE DATA)

(UNAUDITED)

During the three months ended June 30, 2019, two suppliers accounted for 53% of the Company’s cost of goods sold. During the three months ended June 30, 2018, one supplier accounted for 31% of the Company’s cost of goods sold. During the six months ended June 30, 2019, three suppliers accounted for 64% of the Company’s cost of goods sold. During the six months ended June 30, 2018, one supplier accounted for 34% of the Company’s cost of goods sold.

Currently, the Company’s inventory and operations are primarily located in Wisconsin. There is a risk of loss if there are significant environmental, legal or economic changes to this geographic area. The Company primarily utilizes one third-party rail company to ship its products to customers from its plant. There is a risk of business loss if there are significant impacts to this third party’s operations.

NOTE 16 — Commitments and Contingencies

Future Minimum Commitments

The Company is obligated under certain contracts for minimum payments for the right to use land for extractive activities, which is not within the scope of leases under ASC 842. Future minimum annual commitments under such contracts at June 30, 2019 are as follows:

Remainder of 2019	$	208
2020	2,275
2021	2,275
2022	2,275
2023	2,275
Thereafter	31,850
Total	$	41,158

Litigation

In addition to the matters described below, we may be subject to various legal proceedings, claims and governmental inspections, audits or investigations arising out of the Company’s operations in the normal course of business, which cover matters such as general commercial, governmental and trade regulations, product liability, environmental, intellectual property, employment and other actions. Although the outcomes of these routine claims cannot be predicted with certainty, in the opinion of management, the ultimate resolution of these matters would not have a material adverse effect on the Company’s financial statements.

For those customers with which the Company has pending litigation, as described below, the Company recorded $17,573 and $24,252 of revenue for the three and six months ended June 30, 2019, respectively. As of June 30, 2019, $34,564 of accounts and unbilled receivables are attributable to customers with which we have pending litigation.

U.S. Well Services, LLC

On January 14, 2019, Smart Sand, Inc. (plaintiff) filed suit against U.S. Well Services, LLC (defendant) in the Superior Court of the State of Delaware in and for New Castle County (C.A. No. N19C-01-144-PRW [CCLD]). In the suit, plaintiff alleges that defendant is in breach of contract for failure to pay amounts due and payable under a long-term take-or-pay Master Product Purchase Agreement and coterminous Railcar Usage Agreement and is seeking unspecified monetary damages and other appropriate relief. Plaintiff is also seeking a declaratory judgment that the relevant agreements are continuing in full force and effect despite defendant’s purported notice of termination to the contrary. Defendant has filed an Amended Answer, Affirmative Defenses and Counterclaim seeking unspecified monetary damages and declaratory relief. The Company intends to both vigorously prosecute its claims and defend against U.S. Well’s counterclaims. At this time, the Company is unable to express an opinion as to the likely outcome of the matter. Amounts recorded as accounts and unbilled receivables in the financial statements do not represent the full amounts sought in this lawsuit.

Schlumberger Technology Corporation

On January 3, 2019, Smart Sand, Inc. (plaintiff) filed suit against Schlumberger Technology Corporation (defendant) in the District Court of Harris County, Texas (Case No. 2019-00557). In the suit, plaintiff alleges that defendant is in breach of

21

SMART SAND, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(IN THOUSANDS, EXCEPT PER SHARE DATA)

(UNAUDITED)

contract for failure to pay amounts due and payable under a long-term take-or-pay Master Product Purchase Agreement and is seeking unspecified monetary damages and other appropriate relief. Defendant has filed an Answer, Affirmative Defenses and Counterclaim seeking unspecified monetary damages and declaratory relief. The Company intends to both vigorously prosecute its claims and defend against defendant’s counterclaims. At this time, the Company is unable to express an opinion as to the likely outcome of the matter. Amounts recorded as accounts and unbilled receivables in the financial statements do not represent the full amounts sought in this lawsuit.

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ITEM 2.  Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion and analysis summarizes the significant factors affecting the consolidated operating results, financial condition, liquidity and cash flows of the Company as of and for the periods presented below. The following discussion and analysis should be read in conjunction with our unaudited condensed consolidated financial statements and related information contained herein and our audited financial statements as of December 31, 2018. We use EBITDA, Adjusted EBITDA and contribution margin herein as non-GAAP measures of our financial performance. For further discussion of EBITDA, Adjusted EBITDA and contribution margin, see the section entitled “Non-GAAP Financial Measures.” We define various terms to simplify the presentation of information in this Report. All share amounts are presented in thousands.

Forward-Looking Statements

This discussion contains forward-looking statements that are based on the beliefs of our management, as well as assumptions made by, and information currently available to our management. Actual results could differ materially from those discussed in or implied by forward-looking statements as a result of various factors, including those discussed herein and in the section entitled “Risk Factors” in our Form 10-K for the year ended December 31, 2018. Our estimates and forward-looking statements are primarily based on our current expectations and estimates of future events and trends, which affect or may affect our business and operations. Although we believe that these estimates and forward-looking statements are based upon reasonable assumptions, they are subject to several risks and uncertainties and are made in light of information currently available to us. Important factors, in addition to the factors described in this quarterly report, may adversely affect our results as indicated in forward-looking statements. You should read this quarterly report and the documents that we have filed as exhibits hereto completely and with the understanding that our actual future results may be materially different from what we expect. The words “may,” “will,” “should,” “could,” “expect,” “plan,” “anticipate,” “believe,” “estimate,” “predict,” “intend,” “potential,” “might,” “would,” “continue” or the negative of these terms or other comparable terminology and similar words are intended to identify estimates and forward-looking statements. Estimates and forward-looking statements speak only as of the date they were made, and, except to the extent required by law, we undertake no obligation to update, to revise or to review any estimate and/or forward-looking statement because of new information, future events or other factors. Estimates and forward-looking statements involve risks and uncertainties and are not guarantees of future performance. As a result of the risks and uncertainties described above, the estimates and forward-looking statements discussed in this quarterly report might not occur and our future results, level of activity, performance or achievements may differ materially from those expressed in these forward-looking statements due to, including, but not limited to, the factors mentioned above, and the differences may be material and adverse. Because of these uncertainties, you should not place undue reliance on these forward-looking statements.

Overview 

We are a fully integrated frac sand supply and services company, offering complete mine to wellsite logistics solutions to our customers. We produce low-cost, high quality Northern White frac sand, which is a premium proppant used to enhance hydrocarbon recovery rates in the hydraulic fracturing of oil and natural gas wells. We also offer proppant logistics solutions to our customers through our in-basin transloading terminal and our SmartSystems^TM wellsite proppant storage solution capabilities. We provide our products and services primarily to oil and natural gas exploration and production companies and oilfield service companies through a combination of long-term take-or-pay contracts, spot sales in the open market and wellsite proppant storage solutions service and equipment contracts. We believe that the size and favorable geologic characteristics of our sand reserves, the strategic location and logistical advantages of our facilities, our proprietary SmartDepot^TM portable wellsite proppant storage solution and the industry experience of our senior management team have positioned us as an attractive provider of frac sand and proppant logistics services from the mine to the wellsite. 

We own and operate a frac sand mine and related processing facility near Oakdale, Wisconsin, at which we have approximately 317 million tons of proven recoverable sand reserves as of December 31, 2018. We began operations with 1.1 million tons of annual nameplate processing capacity in July 2012. After several expansions, our current annual nameplate processing capacity at our Oakdale facility is approximately 5.5 million tons of frac sand. Our integrated Oakdale facility, with onsite rail infrastructure and wet and dry sand processing facilities, has access to two Class I rail lines and enables us to process and cost-effectively deliver products to our customers.

Market Trends

From 2017 through the second quarter of 2018, improvements in oil and natural gas prices created a stable market environment. During the second half of 2018, the demand for Northern White sand decreased, which we believe was due primarily to reduced takeaway capacity and increased availability of in-basin sand in the Permian basin, a reduction in spending by oil and natural gas companies in the latter portion of the year, and decreased oil prices, particularly in the fourth quarter of 2018. Beginning late in the first quarter of 2019, demand began to improve as completions activity resumed.

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We generally expect the price of frac sand to correlate with the level of drilling activity for oil and natural gas, although the increasing supply of sand, particularly in-basin sand, could keep the price depressed. The willingness of exploration and production companies to engage in new drilling is determined by a number of factors, the most important of which are the prevailing and projected prices of oil and natural gas, the cost to drill, complete and operate a well, the availability and cost of capital and environmental and government regulations, as well as their ability to acquire the sand at the wellsite. We generally expect the level of drilling to correlate with long-term trends in commodity prices. Similarly, oil and natural gas production levels nationally and regionally tend to correlate with drilling activity.

Our sand is sold through long-term take-or-pay contracts or through spot market pricing. Our long-term take-or-pay contracts reduce exposure to fluctuations in price and provide predictability of volumes and price over the contract term. Our take-or-pay contracts typically adjust quarterly based on Average Cushing Oklahoma WTI Spot Prices (“WTI Prices”). Average WTI Prices were down in the first quarter of 2019, and accordingly we adjusted many of our contract prices downward for the second quarter of 2019. By contrast, the spot market provides us with direct access to current market-based prices, offering an outlet to sell excess production at opportunistic times or during favorable market conditions, which also comes with accompanying exposure to price volatility and uncertainty.

GAAP Results of Operations

Three Months Ended June 30, 2019 Compared to Three Months Ended June 30, 2018

The following table summarizes our revenue and expenses for the periods indicated.

	Three Months Ended June 30,						Change
	2019			2018			Dollars			Percentage
	(in thousands)
Revenues	$	67,941		$	54,448		$	13,493		25	%
Cost of goods sold	43,068			34,678			8,390			24	%
Gross profit	24,873			19,770			5,103			26	%
Operating expenses:
Salaries, benefits and payroll taxes	2,798			2,790			8			—	%
Depreciation and amortization	655			476			179			38	%
Selling, general and administrative	2,790			3,595			(805		)	(22	)%
Change in the estimated fair value of contingent consideration	(575		)	—			(575		)	Not meaningful
Total operating expenses	5,668			6,861			(1,193		)	(17	)%
Operating income	19,205			12,909			6,296			49	%
Other income (expenses):
Interest expense, net	(994		)	(500		)	(494		)	99	%
Other income	37			25			12			48	%
Total other expenses, net	(957		)	(475		)	(482		)	101	%
Income before income tax expense	18,248			12,434			5,814			47	%
Income tax expense	3,972			2,413			1,559			65	%
Net income	$	14,276		$	10,021		$	4,255		42	%

Revenues

Revenues were $67.9 million for the three months ended June 30, 2019, during which time we sold approximately 741,000 tons of sand. Revenues for the three months ended June 30, 2018 were $54.4 million, during which time we sold approximately 839,000 tons of sand. The key factors contributing to the increase in revenues for the three months ended June 30, 2019 as compared to the three months ended June 30, 2018 were as follows:

• We had $16.3 million of shortfall revenue for the three months ended June 30, 2019 compared to $0.7 million shortfall revenue for the three months ended June 30, 2018. Our customer contracts dictate whether customers are invoiced quarterly or at the end of their respective contract year for shortfall payments. We recognize revenue to the extent of the unfulfilled minimum contracted quantity at the shortfall price per ton as stated in the contract.

• Sand sales revenue decreased from $34.6 million for the three months ended June 30, 2018 to $26.9 million for the three months ended June 30, 2019 as a result of lower total volumes sold.

• Logistics revenue, which includes freight for certain mine gate sand sales, railcar usage and logistics services, was approximately $20.3 million for the three months ended June 30, 2019 compared to $13.3 million for the three months ended June 30, 2018. The increase in transportation revenue was due to increased in-basin sales volumes in the second quarter of 2019 and wellsite proppant storage solutions sold under contracts existing prior to our acquisition of Quickthree Solutions, Inc. (“Quickthree”).

Cost of Goods Sold

Cost of goods sold was $43.1 million and $34.7 million for the three months ended June 30, 2019 and 2018, respectively. Cost of goods sold increased for the three months ended June 30, 2019 as compared to the same period in 2018, primarily due to increased transportation costs as a result of increased in-basin sales volumes, increased depreciation and amortization due to our Oakdale expansion project becoming operational, and costs of goods sold for the wellsite proppant storage solutions sold under contracts existing prior to our acquisition of Quickthree, partially offset by a decrease in labor costs.

Gross Profit

Gross profit was $24.9 million and $19.8 million for the three months ended June 30, 2019 and 2018, respectively. The increase in gross profit for the three months ended June 30, 2019 was primarily due to higher shortfall revenue and logistics revenue partially offset by increased transportation costs as a result of increased in-basin sales volumes and lower total sales volumes.

Operating Expenses

Operating expenses were $5.7 million and $6.9 million for the three months ended June 30, 2019 and 2018, respectively. Operating expenses are comprised primarily of wages and benefits, professional services fees and other administrative expenses. Salaries, benefits and payroll taxes remained constant at $2.8 million for the three months ended June 30, 2019 and 2018, respectively. Selling, general and administrative expenses decreased from $3.6 million for the three months ended June 30, 2018 to $2.8 million for the three months ended June 30, 2019, primarily as a result of decreased development costs. We recorded a $0.6 million reduction to the fair value of contingent consideration related to our acquisition of Quickthree, which further reduced our operating expenses for the three months ended June 30, 2019.

Interest Expense

We incurred $1.0 million and $0.5 million of net interest expense for the three months ended June 30, 2019 and 2018, respectively. The increase in interest expense for the three months ended June 30, 2019 was primarily due to borrowings under the Credit Facility, which were primarily used to fund acquisition activity in 2018.  

Income Tax Expense

For the three months ended June 30, 2019 and 2018, our effective tax rate was approximately 21.8% and 19.4%, respectively, based on the annual effective tax rate net of discrete federal and state taxes. The computation of the effective tax rate includes modifications for income tax credits, among other items.

Net Income

Net income was $14.3 million and $10.0 million for the three months ended June 30, 2019 and 2018, respectively. The increase in net income for the three months ended June 30, 2019 as compared to the same period in the prior year was primarily due to increased shortfall revenue, and decreased operating expenses.

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Six Months Ended June 30, 2019 Compared to Six Months Ended June 30, 2018

The following table summarizes our revenue and expenses for the periods indicated.

	Six Months Ended June 30,						Change
	2019			2018			Dollars			Percentage
	(in thousands)
Revenues	$	119,716		$	97,076		$	22,640		23	%
Cost of goods sold	83,673			70,091			13,582			19	%
Gross profit	36,043			26,985			9,058			34	%
Operating expenses:
Salaries, benefits and payroll taxes	5,508			5,362			146			3	%
Depreciation and amortization	1,331			664			667			100	%
Selling, general and administrative	5,590			6,696			(1,106		)	(17	)%
Change in the estimated fair value of contingent consideration	(1,542		)	—			(1,542		)	Not meaningful
Total operating expenses	10,887			12,722			(1,835		)	(14	)%
Operating income	25,156			14,263			10,893			76	%
Other income (expenses):
Interest expense, net	(1,975		)	(680		)	(1,295		)	190	%
Other income	74			58			16			28	%
Total other expenses, net	(1,901		)	(622		)	(1,279		)	206	%
Income before income tax expense	23,255			13,641			9,614			70	%
Income tax expense	4,946			2,645			2,301			87	%
Net income	$	18,309		$	10,996		$	7,313		67	%

Revenues

Revenues were $119.7 million for the six months ended June 30, 2019, during which time we sold approximately 1,389,000 tons of sand. Revenues for the six months ended June 30, 2018 were $97.1 million, during which time we sold approximately 1,562,000 tons of sand. The key factors contributing to the increase in revenues for the six months ended June 30, 2019 as compared to the six months ended June 30, 2018 were as follows:

• We had $22.0 million of shortfall revenue for the six months ended June 30, 2019 compared to $0.7 million shortfall revenue for the six months ended June 30, 2018. Our customer contracts dictate whether customers are invoiced quarterly or at the end of their respective contract year for shortfall payments. We recognize revenue to the extent of the unfulfilled minimum contracted quantity at the shortfall price per ton as stated in the contract.

• Sand sales revenue decreased from $56.9 million for the six months ended June 30, 2018 to $48.0 million for the six months ended June 30, 2019 as a result of lower total volumes of sand sold.

• Logistics revenue, which includes freight for certain mine gate sand sales, railcar usage and logistics services, was approximately $40.7 million for the six months ended June 30, 2019 compared to $27.0 million for the six months ended June 30, 2018. The increase in transportation revenue was due to increased in-basin sales volumes in the second quarter of 2019 and wellsite proppant storage solutions sold under contracts existing prior to our acquisition of Quickthree.

Cost of Goods Sold

Cost of goods sold was $83.7 million and $70.1 million for the six months ended June 30, 2019 and 2018, respectively. Cost of goods sold increased for the six months ended June 30, 2019 as compared to the same period in 2018, primarily due to increased transportation costs as a result of increased in-basin sales volumes, increased depreciation and amortization due to our Oakdale expansion project becoming operational, and costs of goods sold for the wellsite proppant storage solutions sold under contracts existing prior to our acquisition of Quickthree, partially offset by a decrease in labor costs.

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Gross Profit

Gross profit was $36.0 million and $27.0 million for the six months ended June 30, 2019 and 2018, respectively. The increase in gross profit for the six months ended June 30, 2019 was primarily due to higher shortfall revenue and logistics revenue partially offset by increased transportation costs as a result of increased in-basin sales volumes and lower total sales volumes.

Operating Expenses

Operating expenses were $10.9 million and $12.7 million for the six months ended June 30, 2019 and 2018, respectively. Operating expenses are comprised primarily of wages and benefits, professional services fees and other administrative expenses. Salaries, benefits and payroll taxes were consistent at $5.5 million and $5.4 million for the six months ended June 30, 2019 and 2018, respectively. Depreciation and amortization increased from $0.7 million for the six months ended June 30, 2018 to $1.3 million for the six months ended June 30, 2019 as a result of the expansion of our wellsite proppant storage solutions fleet and amortization of our intangible assets related to the acquisition of Quickthree. Selling, general and administrative expenses decreased from $6.7 million for the six months ended June 30, 2018 to $5.6 million for the six months ended June 30, 2019, primarily as a result of decreased development costs. We recorded an adjustment to reduce the fair value of contingent consideration in the amount of $1.5 million related to our acquisition of Quickthree, which further reduced our operating expenses for the six months ended June 30, 2019.

Interest Expense

We incurred $2.0 million and $0.7 million of net interest expense for the six months ended June 30, 2019 and 2018, respectively. The increase in interest expense for the six months ended June 30, 2019 was primarily due to borrowings under the Credit Facility, which were primarily used to fund acquisition activity in 2018.  

Income Tax Expense

For the six months ended June 30, 2019 and 2018, our effective tax rate was approximately 21.3% and 19.4%, respectively, based on the annual effective tax rate net of discrete federal and state taxes. The computation of the effective tax rate includes modifications for income tax credits, among other items.

Net Income

Net income was $18.3 million and $11.0 million for the six months ended June 30, 2019 and 2018, respectively. The increase in net income for the six months ended June 30, 2019 as compared to the same period in the prior year was primarily due to increased shortfall and logistics revenue and decreased operating expenses, including the fair value adjustment to contingent consideration, partially offset by increased interest expense.

Non-GAAP Financial Measures

EBITDA, Adjusted EBITDA and contribution margin are not financial measures presented in accordance with GAAP. We believe that the presentation of these non-GAAP financial measures will provide useful information to investors in assessing our financial condition and results of operations. Net income is the GAAP measure most directly comparable to EBITDA and Adjusted EBITDA and gross profit is the GAAP measure most directly comparable to contribution margin. Our non-GAAP financial measures should not be considered as alternatives to the most directly comparable GAAP financial measures. Each of these non-GAAP financial measures has important limitations as analytical tools because they exclude some, but not all, items that affect the most directly comparable GAAP financial measures. You should not consider EBITDA, Adjusted EBITDA or contribution margin in isolation or as substitutes for an analysis of our results as reported under GAAP. Because EBITDA, Adjusted EBITDA and contribution margin may be defined differently by other companies in our industry, our definitions of these non-GAAP financial measures may not be comparable to similarly titled measures of other companies, thereby diminishing their utility.

EBITDA and Adjusted EBITDA 

We define EBITDA as net income, plus: (i) depreciation, depletion and amortization expense; (ii) income tax expense; (iii) interest expense; and (iv) franchise taxes. We define Adjusted EBITDA as EBITDA, plus: (i) gain or loss on sale of fixed assets or discontinued operations; (ii) integration and transition costs associated with specified transactions; (iii) equity compensation; (iv) acquisition and development costs; (v) non-recurring cash charges related to restructuring, retention and other similar actions; (vi) earn-out, contingent consideration obligations and other acquisition and development costs; and (vii) non-cash charges and unusual or non-recurring charges. Adjusted EBITDA is used as a supplemental financial measure by management and by external users of our financial statements, such as investors and commercial banks, to assess:

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• the financial performance of our assets without regard to the impact of financing methods, capital structure or historical cost basis of our assets;

• the viability of capital expenditure projects and the overall rates of return on alternative investment opportunities;

• our ability to incur and service debt and fund capital expenditures;

• our operating performance as compared to those of other companies in our industry without regard to the impact of financing methods or capital structure; and

• our debt covenant compliance, as Adjusted EBITDA is a key component of critical covenants to the Credit Facility.

We believe that our presentation of EBITDA and Adjusted EBITDA will provide useful information to investors in assessing our financial condition and results of operations. Net income is the GAAP measure most directly comparable to EBITDA and Adjusted EBITDA. EBITDA and Adjusted EBITDA should not be considered alternatives to net income presented in accordance with GAAP. Because EBITDA and Adjusted EBITDA may be defined differently by other companies in our industry, our definitions of EBITDA and Adjusted EBITDA may not be comparable to similarly titled measures of other companies, thereby diminishing their utility. The following table presents a reconciliation of EBITDA and Adjusted EBITDA to net income for each of the periods indicated.

	Three Months Ended June 30,					Six Months Ended June 30,
	2019			2018		2019			2018
	(in thousands)
Net income	$	14,276		$	10,021	$	18,309		$	10,996
Depreciation, depletion and amortization	6,590			4,296		12,893			7,456
Income tax expense	3,973			2,413		4,946			2,645
Interest expense	997			509		1,978			728
Franchise taxes	93			109		178			329
EBITDA	$	25,929		$	17,348	$	38,304		$	22,154
(Gain) on sale of fixed assets	(1		)	—		(26		)	—
Equity compensation (1)	685			668		1,384			1,159
Acquisition and development costs (2)	(577		)	914		(1,524		)	1,243
Cash charges related to restructuring and retention (3)	41			270		82			363
Accretion of asset retirement obligations	166			57		445			191
Adjusted EBITDA	$	26,243		$	19,257	$	38,665		$	25,110

(1) Represents the non-cash expenses for stock-based awards issued to our employees and employee stock purchase plan compensation expense.

(2) Includes $575 and $1,542 fair value adjustment of contingent consideration for the three and six months ended June 30, 2019, respectively, and$843 and $1,159 acquisition costs related to our acquisition of Quickthree for the three and six months ended June 30, 2018, respectively.

(3) Represents costs associated with the retention and relocation of employees.

____________________

Adjusted EBITDA was $26.2 million for the three months ended June 30, 2019 compared to $19.3 million for the three months ended June 30, 2018. Adjusted EBITDA was $38.7 million for the six months ended June 30, 2019 compared to $25.1 million for the six months ended June 30, 2018. The increase in Adjusted EBITDA for the three and six months ended June 30, 2019, as compared to the corresponding period in the prior year, was primarily due to higher shortfall revenue, partially offset by lower volumes of sand sales.

Contribution Margin

We also use contribution margin, which we define as total revenues less costs of goods sold excluding depreciation, depletion and accretion of asset retirement obligations, to measure our financial and operating performance. Contribution margin excludes other operating expenses and income, including costs not directly associated with the operations of our business such as accounting, human resources, information technology, legal, sales and other administrative activities. 

We believe that reporting contribution margin and contribution margin per ton sold provides useful performance metrics to management and external users of our financial statements, such as investors and commercial banks, because these metrics

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provide an operating and financial measure of our ability, as a combined business, to generate margin in excess of our operating cost base.

Gross profit is the GAAP measure most directly comparable to contribution margin. Contribution margin should not be considered an alternative to gross profit presented in accordance with GAAP. Because contribution margin may be defined differently by other companies in our industry, our definition of contribution margin may not be comparable to similarly titled measures of other companies, thereby diminishing its utility. The following table presents a reconciliation of contribution margin to gross profit.

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
	(in thousands)
Revenue	$	67,941	$	54,448	$	119,716	$	97,076
Cost of goods sold	43,068		34,678		83,673		70,091
Gross profit	24,873		19,770		36,043		26,985
Depreciation, depletion, and accretion of asset retirement obligations	6,101		3,878		12,007		6,982
Contribution margin	$	30,974	$	23,648	$	48,050	$	33,967
Contribution margin per ton	$	41.80	$	28.19	$	34.59	$	21.75
Total tons sold	741		839		1,389		1,562

Contribution margin was $31.0 million and $23.6 million, or $41.80 and $28.19 per ton sold, for the three months ended June 30, 2019 and 2018, respectively. Contribution margin was $48.1 million and $34.0 million, or $34.59 and $21.75 per ton sold, for the six months ended June 30, 2019 and 2018, respectively. The increase in contribution margin and contribution margin per ton sold for the three and six months ended June 30, 2019 as compared to the corresponding period in the prior year was primarily due to increased shortfall revenue, as well as increased in-basin sales volumes.

Liquidity and Capital Resources

Our primary source of liquidity is cash flow generated from operations, borrowings under our Credit Facility and other equipment financing arrangements.

Going Concern

We evaluate at each annual and interim period whether there are conditions or events, considered in the aggregate, that raise substantial doubt about our ability to continue as a going concern within one year after the date that the consolidated financial statements are issued. Our evaluation is based on relevant conditions and events that are known and reasonably knowable at the date that the consolidated financial statements are issued. Our 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 our ability to continue as a going concern, which means that we may be unable to meet our obligations as they become due.

We are currently pursuing plans to refinance the Credit Facility and extend the current obligations beyond one year as mitigation to the substantial doubt raised regarding our 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 us. The Credit Facility has been recorded as a current liability in the consolidated balance sheet as of June 30, 2019.

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Working Capital

The following table presents the components of our working capital as of June 30, 2019 compared to December 31, 2018.

	June 30,			December 31,
	2019			2018
	(in thousands)
Total current assets	$	68,499		$	50,096
Total current liabilities	75,265			24,652
Working capital	$	(6,766	)	$	25,444

Our working capital deficit was $6.8 million at June 30, 2019 compared to a working capital surplus of $25.4 million at December 31, 2018.  The decrease in working capital was primarily a result of classifying our Credit Facility as a short-term obligation, a reduction in inventory of $6.2 million and new short-term lease liabilities of $13.3 million on our balance sheet in connection with the adoption of the new lease accounting standard on January 1, 2019, partially offset by an increase in accounts and unbilled receivables of $26.2 million. As of June 30, 2019, $34.6 million of the $53.0 million total accounts and unbilled receivables is attributable to customers with which we have pending litigation.

Summary Cash Flows for the Six Months EndedJune 30, 2019 and 2018:

	Six Months Ended June 30,
	2019			2018
	(in thousands)
Net cash provided by operating activities	$	17,403		$	18,913
Net cash used in investing activities	$	(13,869	)	$	(96,719	)
Net cash (used in) provided by financing activities	$	(3,747	)	$	44,324

Net Cash Provided by Operating Activities

Net cash provided by operating activities was $17.4 million for the six months ended June 30, 2019, compared to $18.9 million for the six months ended June 30, 2018. Operating cash flows include net income of $18.3 million and $11.0 million in net earnings generated from revenue in the six months ended June 30, 2019 and 2018, respectively, offset by cost of goods sold, general and administrative expenses and cash interest expense, adjusted for changes in working capital.

Net Cash Used in Investing Activities

Net cash used in investing activities was $13.9 million for the six months ended June 30, 2019, which was primarily for manufacturing of our SmartDepotsilos and plant upgrades and maintenance capital. Net cash used in investing activities was $96.7 million for the six months ended June 30, 2018, which was primarily used for the expansion of our processing facility in Oakdale, Wisconsin and our acquisitions of the Van Hook terminal and Quickthree.

Net Cash (Used in) Provided by Financing Activities

Net cash used in financing activities was $3.7 million for the six months ended June 30, 2019, which consisted primarily of $5.5 million of net repayments on our Credit Facility, $1.2 million of payments of contingent consideration related to the manufacture of our SmartSystem equipment, partially offset by $3.1 million of net proceeds from the issuance of notes payable. Net cash provided by financing activities was $44.3 million for the six months ended June 30, 2018, which consisted primarily of net proceeds from the Credit Facility of $45.0 million.

Indebtedness

Credit Facility

Our primary source of debt is our Credit Facility. We had total borrowing capacity of $55.0 million on our Credit Facility as of June 30, 2019 with $16.0 million in total undrawn availability. Substantially all of our assets are pledged as collateral. In February 2019, we entered into an agreement with the existing lenders on our Credit Facility to, among other things, extend the maturity date of the Credit Facility to June 30, 2020 and reduce the borrowing capacity to $50.0 million by December 31, 2019. The Credit Facility matures on June 30, 2020 and as such, the Company has included the balance in the current portion of long-term debt as of June 30, 2019. The Company is currently pursuing plans to refinance the Credit Facility and extend the current obligations beyond one year.

The Credit Facility contains various reporting requirements, negative covenants and restrictive provisions and requires maintenance of financial covenants, including a fixed charge coverage ratio and a leverage ratio (each as defined in the Credit Agreement). As of June 30, 2019 and December 31, 2018, we were in compliance with all covenants.

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Notes Payable

We have entered into various financing arrangements to support the manufacturing of our SmartSystems wellsite proppant storage solutions equipment with interest rates between 4.17% and 7.49%. Title to the equipment is held by the financial institutions as collateral, though the equipment is included in the Company’s property, plant and equipment.

Capital Requirements

For the six months ended June 30, 2019, we spent approximately $13.9 million on capital expenditures. The Company estimates that full year 2019 capital expenditures will be approximately $25 million to $35 million, excluding any additional acquisitions, which are anticipated to support incremental growth and efficiency initiatives. These projects are expected to provide efficiencies in our plant operations and improve our logistics capabilities to further position us to capitalize upon growth opportunities that we anticipate will continue to develop with both current and potential new customers. We expect to fund these capital expenditures with cash from operations, equipment financing options available to us or potential borrowings under the Credit Facility.

Share Repurchases

The Company is authorized to repurchase shares through open market purchases at prevailing market prices or through privately negotiated transactions as permitted by securities laws and other legal requirements. On November 8, 2018, the Company announced that the board of directors authorized the Company to repurchase up to 2,000,000 shares of the Company’s common stock during the twelve-month period following the announcement of the share repurchase program. At June 30, 2019, the maximum number of shares that the Company may repurchase under the current repurchase authority was 1,411,800 shares. There were no share repurchases during the six months ended June 30, 2019.

The program allows the Company to repurchase shares at its discretion. Market conditions, price, corporate and regulatory requirements, alternative investment opportunities, and other economic conditions will influence the timing of the repurchase and the number of shares repurchased, if any. The program does not obligate the Company to repurchase any specific number of shares and, subject to compliance with applicable securities laws and other legal requirements, may be suspended or terminated at any time without prior notice.

Off-Balance Sheet Arrangements

We had outstanding performance bonds of $8.6 million at June 30, 2019 and December 31, 2018.

Contractual Obligations

As of June 30, 2019, we had contractual obligations for the Credit Facility, equipment lease obligations, notes payable, operating leases, capital expenditures and asset retirement obligations. Operating leases are primarily for railcars and operating equipment. As part of the acquisition of substantially all of the assets of Quickthree on June 1, 2018, we recorded a $9.2 million contingent consideration liability related to certain earn-out provisions included in the terms of the acquisition. Each reporting period, we reassess our inputs including market comparable information and management assessments regarding potential future scenarios, then discount the liabilities to present value. As of December 31, 2018, our contingent consideration liability was $7.2 million. For the six months ended June 30, 2019, we paid $1.2 million in contingent consideration and recorded an adjustment to reduce the fair value of contingent consideration in the amount of $1.5 million, which reduced our contingent consideration liability to $4.4 million as of June 30, 2019.

Environmental Matters

We are subject to various federal, state and local laws and regulations governing, among other things, hazardous materials, air and water emissions, environmental contamination and reclamation and the protection of the environment and natural resources. We have made, and expect to make in the future, expenditures to comply with such laws and regulations, but cannot predict the full amount of such future expenditures.

Seasonality

Our business is affected to some extent by seasonal fluctuations in weather that impact the production levels at our wet processing plant. While our dry plants are able to process finished product volumes evenly throughout the year, our excavation and our wet sand processing activities have historically been limited to primarily non-winter months. As a consequence, we have experienced lower cash operating costs in the first and fourth quarter of each calendar year, and higher cash operating costs in the second and third quarter of each calendar year when we overproduced to meet demand in the winter months. During the fourth quarter of 2017, we finished construction of a new wet plant, which is an indoor facility that allows us to produce wet sand inventory year-round to support a portion of our dry sand processing capacity, which may reduce certain of the effects of this seasonality. We may also sell raw frac sand for use in oil and natural gas producing basins where severe weather conditions may curtail drilling activities and, as a result, our sales volumes to those areas may be reduced during such severe weather periods.

30

Customer Concentration

For the six months ended June 30, 2019, revenue from Liberty, Rice Energy (a subsidiary of EQT Corporation) and U.S. Well Services accounted for 26.7%, 20.8% and 13.0% , respectively, of total revenue. For the six months ended June 30, 2018, sales to Rice Energy (a subsidiary of EQT Corporation), Liberty, WPX Energy and U.S. Well Services accounted for 22.0%, 18.7%, 13.9% and 10.7% respectively, of total revenue.

Revenue from U.S. Well Services for the six months ended June 30, 2019 is the subject of ongoing litigation. See Note 16 to the financial statements for additional information.

Critical Accounting Policies and Estimates 

Except for the following, there have been no material changes in our critical accounting policies and procedures during the six months ended June 30, 2019.

Leases

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. We adopted ASU 2016-02 and its related updates using the transition practical expedients, which allows us to use the existing lease population, classification and determination of initial direct costs when calculating the lease liability and right-of-use asset balances. We also used the optional transition method, which allows us 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. We have implemented new accounting policies and software to facilitate the recording and reporting of lease transactions and balances. We recorded initial operating right-of-use assets of $35.9 million and related lease liabilities of $36.5 million on our consolidated balance sheet on January 1, 2019. New disclosures are included in Note 9 - Leases to these interim financial statements.

Leases - Lessee

We use leases primarily to procure certain office space, railcars and heavy equipment as part of our operations. The majority of our lease payments are fixed and determinable with certain lease payments containing immaterial variable payments based on the number of hours the equipment is used. Certain of our leases have options that allow for renewal at market rates, purchase at fair market value or termination of the lease. We 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. We are not reasonably certain that any of our lease options will be exercised and, as such, have not included those options in our right-of-use assets or lease liabilities. Certain of our 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 we could owe additional amounts to the lessor upon return of equipment. There are no restrictions or covenants imposed by any of our leases.

We evaluate 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. We recognize lease expense on a straight-line basis over the term of the lease. We evaluate the classification of our leases at the commencement date and include both lease and non-lease components in our calculation of consideration in the contract for all classes of operating leases.

We apply a single discount rate to all operating leases. We determined our incremental borrowing rate based on an average of collateralized borrowing rates offered by various lenders. We 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.See Note 9 — Leases in these interim financial statements for additional disclosures regarding our leasing activity.

Leases - Lessor

We manufacture equipment and offer for lease our SmartSystems wellsite proppant storage solutions. We negotiate the terms of our lease agreements on a case-by-case basis. There are no significant options that are reasonably certain to be exercised, residual value guarantees or restrictions or covenants in our lease contracts and, therefore, no such terms have been included in our accounting for the leases. There are currently no contracts in place that meet the definition of a lease.

ITEM 3.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

We have considered changes in our exposure to market risks during the six months ended June 30, 2019 and have determined that there have been no material changes to our exposure to market risks from those described in our Annual Report on Form 10-K for the year ended December 31, 2018, filed with the SEC on March 14, 2019.

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ITEM 4.  CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of the end of the period covered by this Report. Based on such evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that as of such date, our disclosure controls and procedures were effective.

Changes in Internal Control Over Financial Reporting

There have been no changes in internal control over financial reporting for the quarter ended June 30, 2019 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II – OTHER INFORMATION

ITEM 1.  LEGAL PROCEEDINGS

From time to time we may be involved in litigation relating to claims arising out of our operations in the normal course of business. The disclosure called for by Part II, Item 1 regarding our legal proceedings is incorporated by reference herein from Part I, Item 1. Note 16 - Commitments and Contingencies - Litigation of the notes to the condensed consolidated financial statements in this Form 10-Q for the three and six months ended June 30, 2019.

ITEM 1A.  RISK FACTORS

Except as set forth below, there have been no material changes to the risk factors described in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2018.

A substantial portion of our accounts and unbilled receivables consists of shortfall payments due from two customers under long-term take-or-pay contracts, which are currently subject to litigation.

A substantial portion of our accounts and unbilled receivables consists of shortfall payments due from two customers under long-term take-or-pay contracts. We expect additional shortfall amounts to continue to accrue every contract quarter or contract year, depending on the terms of each contract. We are currently in litigation with such customers regarding, among other things, nonpayment of shortfall amounts due. Litigation, by its nature, can be costly, time consuming, and unpredictable, and we can provide no assurance that the outstanding amounts due will be collected in a timely manner, if at all. As of June 30, 2019, $34.6 million of accounts and unbilled receivables were from the foregoing two customers.

We may not be able to refinance or replace our Credit Facility on favorable terms, or at all, which will have a material adverse effect on our business, results of operations, financial condition and cash flows.

Our Credit Facility matures on June 30, 2020. As of June 30, 2019, the total borrowing capacity under the facility is $55.0 million with undrawn availability of $16.0 million. We have been involved in discussions with our current lenders and other sources of capital regarding alternatives that would include the replacement or refinancing of the Credit Facility. There is no assurance, however, that such discussions will result in a refinancing of the Credit Facility on acceptable terms, if at all, and in such case there is substantial doubt that the Company could continue as a going concern.

ITEM 2.  UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

None.

ITEM 3.  DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4.  MINE SAFETY DISCLOSURES

We are committed to maintaining a culture that prioritizes mine safety. We believe that our commitment to safety, the environment and the communities in which we operate is critical to the success of our business. Our sand mining operations are subject to mining safety regulation. The U.S. Mining Safety and Health Administration (“MSHA”) is the primary regulatory organization governing frac sand mining and processing. Accordingly, MSHA regulates quarries, surface mines, underground mines and the industrial mineral processing facilities associated with and located at quarries and mines. The mission of MSHA is to administer the provisions of the Federal Mine Safety and Health Act of 1977 and to enforce compliance with mandatory miner safety and health standards. As part of MSHA’s oversight, representatives perform at least two unannounced inspections annually for each above-ground facility.

We are also subject to regulations by the U.S. Occupational Safety and Health Administration (“OSHA”) which has promulgated rules for workplace exposure to respirable silica for several other industries. Respirable silica is a known health hazard for workers exposed over long periods. MSHA is expected to adopt similar rules as part of its “Long Term Items” for rulemaking. Airborne respirable silica is associated with work areas at our site and is monitored closely through routine testing and MSHA inspection. If the workplace exposure limit is lowered significantly, we may be required to incur certain capital expenditures for equipment to reduce this exposure. Smart Sand also adheres to the National Industrial Sand Association’s (“NISA”) respiratory protection program, and ensures that workers are provided with fitted respirators and ongoing radiological monitoring.

Our operations are subject to the Federal Mine Safety and Health Act of 1977, as amended by the Mine Improvement and New Emergency Response Act of 2006, which imposes stringent health and safety standards on numerous aspects of mineral extraction and processing operations, including the training of personnel, operating procedures, operating equipment, and other matters. Our failure to comply with such standards, or changes in such standards or the interpretation or enforcement thereof, could have a material adverse effect on our business and financial condition or otherwise impose significant restrictions on our ability to conduct mineral extraction and processing operations. Following passage of The Mine Improvement and New Emergency Response Act of 2006, MSHA significantly increased the numbers of citations and orders charged against mining operations.  The dollar penalties assessed for citations issued has also increased in recent years.  Information concerning mine safety violations or other regulatory matters required by Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act and Item 104 of Regulation S-K (17 CFR 229.104) is included in Exhibit 95.1 to this Report.

ITEM 5.  OTHER INFORMATION

None.

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ITEM 6.  EXHIBITS

3.1	Second Amended and Restated Certificate of Incorporation of Smart Sand, Inc. (incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K filed with the SEC on November 15, 2016)
3.2	Second Amended and Restated Bylaws of Smart Sand, Inc. (incorporated by reference to Exhibit 3.2 to the Company’s Current Report on Form 8-K filed with the SEC on November 15, 2016)
10.1*‡	First Amendment to the Master Product Purchase Agreement and First Amendment to Railcar Usage Agreement, dated June 21, 2019, between Smart Sand, Inc. and Rice Drilling B LLC, a subsidiary of EQT Corporation
31.1*	Certification Pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934, adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2*	Certification Pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934, adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1*†	Certification Pursuant to 18 U.S.C. adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2*†	Certification Pursuant to 18 U.S.C. adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
95.1*	Mine Safety Disclosure Exhibit
101.INS*	XBRL Instance Document
101.SCH*	XBRL Taxonomy Extension Schema
101.CAL*	XBRL Taxonomy Extension Calculation Linkbase
101.DEF*	XBRL Taxonomy Extension Definition Linkbase
101.LAB*	XBRL Taxonomy Extension Label Linkbase
101.PRE*	XBRL Taxonomy Extension Presentation Linkbase

* Filed Herewith.

† This certification is deemed not filed for purposes of section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of that section, nor shall it be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act.

‡ Portions of this exhibit have been redacted in compliance with Regulation S-K Item 601(b)(10).

34

Signatures

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. 

	Smart Sand, Inc.
August 7, 2019	By:	/s/ Charles E. Young
		Charles E. Young, Chief Executive Officer
		(Principal Executive Officer)

	Smart Sand, Inc.
August 7, 2019	By:	/s/ Lee E. Beckelman
		Lee E. Beckelman, Chief Financial Officer
		(Principal Financial Officer)

35

EX-10.1

Exhibit 10.1

SPECIFIC TERMS IN THIS EXHIBIT HAVE BEEN REDACTED BECAUSE SUCH TERMS ARE NOT MATERIAL AND WOULD BE COMPETITIVELY HARMFUL IF PUBLICLY DISCLOSED. SUCH TERMS HAVE BEEN MARKED AT THE APPROPRIATE PLACE WITH THREE ASTERISKS (***)

FIRST AMENDMENT TO MASTER PRODUCT PURCHASE AGREEMENT AND FIRST AMENDMENT TO RAILCAR USAGE AGREEMENT

This First Amendment to Master Product Purchase Agreement and First Amendment to Railcar Usage Agreement (the “Amendment”) is entered into on June 21, 2019, by and between Smart Sand, Inc., a Delaware corporation (“Smart Sand”), and Rice Drilling B LLC, a Delaware limited liability company (“Buyer”).

Recitals

Whereas, Smart Sand and Buyer have entered into (i) a Master Product Purchase Agreement, dated effective as of January 1, 2017 (the “PPA”), and (ii) a Railcar Usage Agreement, dated effective as of January 1, 2017 (the “RUA”, and together with the PPA, the “Agreements”);

Whereas, Smart Sand and Buyer desire to amend the PPA and RUA; and

Whereas, pursuant to Section 15.1 of the PPA and Section 8 of the RUA, the Agreements may not be changed or amended except by a writing executed by both parties.

Now, Therefore, in consideration of the foregoing recitals and the mutual promises set forth herein, sufficiency of which is acknowledged by the undersigned, the Buyer and Smart Sand hereby agree as follows:

1.Amendment to the PPA. The PPA shall be amended as follows:

1.1The table contained in Section 1.1 of the PPA shall be deleted in its entirety and restated as follows:

Contract Year	Minimum Tons per Year
1	***
2	***
3	***
4	***

1.2Section 1.4 of the PPA shall be deleted in its entirety and replaced with the following:

“1.4So long as all Monthly Reservation Charges have been (and continue to be) paid in full, Buyer may defer (to no later than the end of the Term) the purchase of up to *** tons of Products (“Deferred Tons”), and an amount equal to the product of the number of Deferred Tons multiplied by $*** shall be applied as a credit towards the purchase of such Deferred Tons in the future (such credit, the “Deferral Balance”). If Buyer purchases less than *** in any given month (the “ Monthly Benchmark”), then, subject to the maximum number of Deferred Tons set forth in the first sentence of this Section, the difference between the Monthly Benchmark and the tons purchased during such month shall automatically become Deferred Tons, and the Deferral Balance shall increase by an amount equal to the product of such newly designated Deferred Tons multiplied by $***. If Buyer purchases

more than the Monthly Benchmark in any given month when there are Deferred Tons outstanding, then the outstanding Deferred Tons shall automatically decrease by such excess amount of Products purchased (but in no event shall the Deferred Tons be decreased to below ***), and the outstanding Deferral Balance shall be reduced by an amount equal to the product of $*** multiplied by such excess amount of Products purchased (but in no event shall the Deferral Balance be decreased to below $***). Within *** days after completion of the Term or earlier termination of this Agreement (the “Determination Date”), Buyer shall pay to Smart Sand (the “Deferment Payment”) an amount equal to the product of the outstanding Deferred Tons as of the Determination Date multiplied by the Contract Price in effect at the end of the Term, minus the Deferral Balance (i.e. Deferment Payment = (outstanding Deferred Tons * current Contract Price) - Deferral Balance).

Within *** days of receiving the Deferment Payment, Smart Sand shall deliver to Buyer, in one or more shipments to be determined in Smart Sand’s sole discretion, the Deferred Tons. Buyer may, at its option, choose to not take delivery of some or all of the Deferred Tons; provided, however, that if Buyer chooses to not take delivery of such Products, Buyer shall not be entitled to any refund of any portion of the Deferment Payment or Monthly Reservation Charges paid to Smart Sand. Buyer’s choice to not take delivery shall be irrevocable and Buyer shall forfeit any title to or right to receive the Products that Buyer has chosen not to receive. If Buyer purchases less than the Minimum Tons per Year in any Contract Year, as adjusted by application of Deferred Tons (the “Shortfall Amount”), Smart Sand shall retain the Monthly Reservation Charges paid during such Contract Year that have not been applied towards the Deferral Bank or the $*** payment reduction set forth in Section 2.5, and Seller shall not be obligated to deliver to Buyer all or any portion of any Shortfall Amount. Buyer shall not be entitled to any refund in connection with a Shortfall Amount.”

1.3The last two sentences of Section 2.5 shall be deleted in their entirety and replaced with the following:

“Each Monthly Reservation Charge received by Smart Sand shall be used by Smart Sand to reduce the amount payable by Buyer for Products ordered by $*** per ton in the applicable month for which such Monthly Reservation Charge relates (or such other months as determined in accordance with Section 1.4). The foregoing payment reduction shall cease in any month of each Contract Year when the aggregate payment reductions for Products purchased during such month is equal to ***, subject to adjustments to the Deferred Tons and Deferral Balance as set forth in Section 1.4.”

1.4The reference to “December 31, 2019” in Section 4.2 of the PPA shall be deleted and replaced with “December 31, 2020”.

1.5The reference in Section 7.1 of the PPA to “Contract Year 3” shall be deleted and replaced with “Contract Year 4”.

1.6The term “1.4 (Deferrals),” shall be added to Section 7.3 of the PPA immediately prior to the term “2.2 (Taxes)”.

1.7The contact information for Smart Sand in Section 12 of the PPA shall be deleted in its entirety and replaced with “Smart Sand, Inc., 1000 Floral Vale Boulevard, Suite 225, Yardley, Pennsylvania 19067, Attention: James D. Young, Facsimile: 215.295.7911”.

2.Amendment to the RUA. The RUA shall be amended as follows:

2.1The reference to “December 31, 2019” in Section 2 of the RUA shall be deleted and replaced with “December 31, 2020”.

3.General Provisions.

3.1Defined Terms. Capitalized terms used and not defined herein shall have those definitions as set forth in the Agreements.

3.2Credit Memo. Promptly after the execution of this Amendment, Seller shall issue to Buyer a credit memo in the amount of $***. Smart Sand and Buyer each acknowledges and agrees that, as of the date of this Amendment, the outstanding Deferred Tons is *** tons and the Deferral Balance is $***.

3.3Successors and Assigns. The terms and conditions of this Amendment shall inure to the benefit of and be binding upon the respective successors and assigns of the parties.  Nothing in this Amendment, express or implied, is intended to confer upon any party other than the parties hereto or their respective successors and assigns any rights, remedies, obligations, or liabilities under or by reason of this Amendment, except as expressly provided in this Amendment.

3.4Counterparts; Facsimile. This Amendment may be executed and delivered by facsimile or pdf signature and in two or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument.

3.5Severability. The invalidity or unenforceability of any provision hereof shall in no way affect the validity or enforceability of any other provision.

3.6No Other Changes. Except as expressly amended by this Amendment, all of the terms of the Agreements shall remain in full force and effect.

3.7Entire Agreement. This Amendment, the Agreements and the agreements and documents referred to herein, together with all the Exhibits hereto and thereto, constitute the entire agreement and understanding of the parties with respect to the subject matter of this Amendment, and supersede any and all prior understandings and agreements, whether oral or written, between or among the parties hereto with respect to the specific subject matter hereof.

[Remainder of this page intentionally left blank]

In Witness Whereof, the parties hereto have executed this First Amendment to Master Product Purchase Agreement and First Amendment to Railcar Usage Agreement as of the date first written above.

SMART SAND, INC.

By: /s/ John Young

Name: John Young

Title: COO

RICE DRILLING B, LLC

By: /s/ Bradley Maddox

Name: Bradley Maddox

Title: VP Drilling & Completions

EX-31.1

Exhibit 31.1

CERTIFICATION BY PRINCIPAL EXECUTIVE OFFICER

I, Charles E. Young, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Smart Sand, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: August 7, 2019

/s/ Charles E. Young

Charles E. Young, Chief Executive Officer

(Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATION BY PRINCIPAL FINANCIAL OFFICER

I, Lee E. Beckelman, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Smart Sand, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: August 7, 2019

/s/ Lee E. Beckelman

Lee E. Beckelman, Chief Financial Officer

(Principal Financial Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Smart Sand, Inc. (the “Company”) on Form 10-Q for the quarter ended June 30, 2019 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Charles E. Young, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: August 7, 2019

/s/ Charles E. Young

Charles E. Young, Chief Executive Officer

(Principle Executive Officer)

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Smart Sand, Inc. (the “Company”) on Form 10-Q for the quarter ended June 30, 2019 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lee E. Beckelman, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: August 7, 2019

/s/ Lee E. Beckelman

Lee E. Beckelman, Chief Financial Officer

(Principle Financial Officer)

EX-95.1

Exhibit 95.1

MINE SAFETY DISCLOSURES

The following disclosures are provided pursuant to Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Act”) and Item 104 of Regulation S-K, which requires certain disclosures by companies required to file periodic reports under the Securities Exchange Act of 1934, as amended, that operate mines regulated under the Federal Mine Safety and Health Act of 1977 (the “Mine Act”).

Mine Safety Information

Whenever the Federal Mine Safety and Health Administration (“MSHA”) believes a violation of the Mine Act, any health or safety standard or any regulation has occurred, it may issue a citation which describes the alleged violation and fixes a time within which the U.S. mining operator must abate the alleged violation. In some situations, such as when MSHA believes that conditions pose a hazard to miners, MSHA may issue an order removing miners from the area of the mine affected by the condition until the alleged hazards are corrected. When MSHA issues a citation or order, it generally proposes a civil penalty, or fine, as a result of the alleged violation, that the operator is ordered to pay. Citations and orders can be contested and appealed, and as part of that process, may be reduced in severity and amount, and are sometimes dismissed. The number of citations, orders and proposed assessments vary depending on the size and type (underground or surface) of the mine as well as by the MSHA inspector(s) assigned.

Mine Safety Data

The following provides additional information about references used in the table below to describe the categories of violations, orders or citations issued by MSHA under the Mine Act:

• Section 104 S&S Citations: Citations received from MSHA under section 104 of the Mine Act for violations of mandatory health or safety standards that could significantly and substantially contribute to the cause and effect of a mine safety or health hazard.

• Section 104(b) Orders: Orders issued by MSHA under section 104(b) of the Mine Act, which represents a failure to abate a citation under section 104(a) within the period of time prescribed by MSHA. This results in an order of immediate withdrawal from the area of the mine affected by the condition until MSHA determines that the violation has been abated.

• Section 104(d) Citations and Orders: Citations and orders issued by MSHA under section 104(d) of the Mine Act for an unwarrantable failure to comply with mandatory health or safety standards.

• Section 110(b)(2) Violations: Flagrant violations issued by MSHA under section 110(b)(2) of the Mine Act.

• Section 107(a) Orders: Orders issued by MSHA under section 107(a) of the Mine Act for situations in which MSHA determined an “imminent danger” (as defined by MSHA) existed.

Pattern or Potential Pattern of Violations

The following provides additional information about references used in the table below to describe elevated pattern of violation enforcement actions taken by MSHA under the Mine Act:

• Pattern of Violations: A pattern of violations of mandatory health or safety standards that are of such nature as could have significantly and substantially contributed to the cause and effect of mine health or safety hazards under section 104(e) of the Mine Act.

• Potential Pattern of Violations: The potential to have a pattern of violations under section 104(e).

Pending Legal Actions

The following provides additional information of the types of proceedings brought before the Federal Mine Safety and Health Review Commission (“FMSHRC”):

• Contest Proceedings: A contest proceeding may be filed by an operator to challenge the issuance of a citation or order issued by MSHA.

• Civil Penalty Proceedings: A civil penalty proceeding may be filed by an operator to challenge a civil penalty MSHA has proposed for a violation contained in a citation or order. The operator does not institute civil penalty proceedings based solely on the assessment amount of proposed penalties. Any initiated adjudications address substantive matters of law and policy instituted on conditions that are alleged to be in violation of mandatory standards of the Mine Act.

• Discrimination Proceedings: Involves a miner’s allegation that he or she has suffered adverse employment action because he or she engaged in activity protected under the Mine Act, such as making a safety complaint. Also includes temporary reinstatement proceedings involving cases in which a miner has filed a complaint with MSHA stating that he or she has suffered discrimination and the miner has lost his or her position.

• Compensation Proceedings: A compensation proceeding may be filed by miners entitled to compensation when a mine is closed by certain closure orders issued by MSHA. The purpose of the proceeding is to determine the amount of compensation, if any, due to miners idled by the orders.

• Temporary Relief: Applications for temporary relief are applications filed under section 105(b)(2) of the Mine Act for temporary relief from any modification or termination of any order.

• Appeals: An appeal may be filed by an operator to challenge judges’ decisions or orders to the Commission, including petitions for discretionary review and review by the Commission on its own motion.

For the Three Months Ended June 30, 2019:

Mine (1)	Oakdale, WI
Section 104 citations for violations of mandatory health or safety standards that could significantly and substantially contribute to the cause and effect of a mine safety or health hazard (#)	—
Section 104(b) orders (#)	—
Section 104(d) citations and orders (#)	—
Section 110(b)(2) violations (#)	—
Section 107(a) orders (#)	—
Proposed assessments under MSHA (2)	$1,681
Mining-related fatalities (#)	—
Section 104(e) notice	No
Notice of the potential for a pattern of violations under Section 104(e)	No
Legal actions before the FMSHRC initiated (#)	1
Legal actions before the FMSHRC resolved (#)	—
Legal actions pending before the FMSHRC, end of period:
Contests of citations and orders referenced in Subpart B of 29 CFR Part 2700 (#)	—
Contests of proposed penalties referenced in Subpart C of 29 CFR Part 2700 (#)	1
Complaints for compensation referenced in Subpart D of 29 CFR Part 2700 (#)	—
Complaints of discharge, discrimination or interference referenced in Subpart E of 29 CFR Part 2700 (#)	—
Applications for temporary relief referenced in Subpart F of 29 CFR Part 2700 (#)	—
Appeals of judges’ decisions or orders referenced in Subpart H of 29 CFR Part 2700 (#)	—
Total pending legal actions (#)	1

(1) The definition of mine under section 3 of the Mine Act includes the mine, as well as other items used in, or to be used in, or resulting from, the work of extracting minerals, such as land, structures, facilities, equipment, machines, tools and minerals preparation facilities. Unless otherwise indicated, any of these other items associated with a single mine have been aggregated in the totals for that mine. MSHA assigns an identification number to each mine and may or may not assign separate identification numbers to related facilities such as preparation facilities. We are providing the information in the table by mine rather than MSHA

identification number because that is how we manage and operate our mining business and we believe this presentation will be more useful to investors than providing information based on MSHA identification numbers.

(2) Represents the total dollar value of the proposed assessments from MSHA under the Mine Act, for the three months preceding June 30, 2019, for all citations / orders assessed, not just those disclosed in the rows preceding such dollar value.

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Cover Page - shares	6 Months Ended
	Jun. 30, 2019	Jul. 31, 2019
Cover page.
Title of 12(b) Security	Common Stock, par value $0.001 per share
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Trading Symbol	SND
Entity Registrant Name	Smart Sand, Inc.
Entity Central Index Key	0001529628
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Shell Company	false
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Interactive Data Current	Yes
Document Quarterly Report	true
Entity Current Reporting Status	Yes
Entity Common Stock, Shares Outstanding		41,318,887

XML

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 1,253	$ 1,466
Accounts receivable, net	45,652	18,989
Unbilled receivables	7,311	7,823
Inventories	12,381	18,575
Prepaid expenses and other current assets	1,902	3,243
Total current assets	68,499	50,096
Property, plant and equipment, net	250,978	248,396
Operating right-of-use assets	32,417	0
Intangible assets, net	17,233	18,068
Other assets	3,374	3,732
Total assets	372,501	320,292
Current liabilities:
Accounts payable	8,050	11,336
Accrued and other expenses	10,237	8,392
Deferred revenue	3,401	4,095
Current portion of long-term debt	40,238	829
Current portion of operating lease liabilities	13,339	0
Total current liabilities	75,265	24,652
Long-term debt, net of current portion	6,396	47,893
Long-term operating lease liabilities, net of current portion	19,702	0
Long-term deferred tax liabilities, net	22,185	17,898
Asset retirement obligation	15,185	13,322
Contingent consideration	4,400	7,167
Total liabilities	143,133	110,932
Commitments and contingencies (Note 16)
Stockholders’ equity
Common stock, $0.001 par value, 350,000,000 shares authorized; 40,949,849 issued and 40,209,409 outstanding at June 30, 2019; 40,673,513 issued and 39,974,478 outstanding at December 31, 2018	40	40
Treasury stock, at cost, 740,440 and 699,035 shares at June 30, 2019 and December 31, 2018, respectively	(2,978)	(2,839)
Additional paid-in capital	163,797	162,195
Retained earnings	68,586	50,277
Accumulated other comprehensive loss	(77)	(313)
Total stockholders’ equity	229,368	209,360
Total liabilities and stockholders’ equity	$ 372,501	$ 320,292

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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	350,000,000	350,000,000
Common stock, shares issued (in shares)	40,949,849	40,673,513
Common stock, shares outstanding (in shares)	40,209,409	39,974,478
Treasury stock, shares (in shares)	740,440	699,035

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CONDENSED CONSOLIDATED INCOME STATEMENTS (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Revenues	$ 67,941	$ 54,448	$ 119,716	$ 97,076
Cost of goods sold	43,068	34,678	83,673	70,091
Gross profit	24,873	19,770	36,043	26,985
Operating expenses:
Salaries, benefits and payroll taxes	2,798	2,790	5,508	5,362
Depreciation and amortization	655	476	1,331	664
Selling, general and administrative	2,790	3,595	5,590	6,696
Change in the estimated fair value of contingent consideration	(575)	0	(1,542)	0
Total operating expenses	5,668	6,861	10,887	12,722
Operating income	19,205	12,909	25,156	14,263
Other income (expenses):
Interest expense, net	(994)	(500)	(1,975)	(680)
Other income	37	25	74	58
Total other income (expenses), net	(957)	(475)	(1,901)	(622)
Income before income tax expense	18,248	12,434	23,255	13,641
Income tax expense	3,972	2,413	4,946	2,645
Net income	$ 14,276	$ 10,021	$ 18,309	$ 10,996
Net income per common share:
Basic (in dollars per share)	$ 0.36	$ 0.25	$ 0.46	$ 0.27
Diluted (in dollars per share)	$ 0.36	$ 0.25	$ 0.46	$ 0.27
Weighted-average number of common shares:
Basic (in shares)	40,074	40,499	40,035	40,455
Diluted (in shares)	40,173	40,550	40,117	40,550

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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 14,276	$ 10,021	$ 18,309	$ 10,996
Other comprehensive income:
Foreign currency translation adjustment	91	76	236	76
Comprehensive income	$ 14,367	$ 10,097	$ 18,545	$ 11,072

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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY (UNAUDITED) - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2017		40,393,033	81,052
Beginning balance at Dec. 31, 2017	$ 190,022	$ 40	$ (666)	$ 159,059	$ 31,589	$ 0
Increase (Decrease) in Stockholders' Equity
Vesting of restricted stock (in shares)		96,713
Stock-based compensation	610			610
Employee stock purchase plan compensation	70			70
Employee stock purchase plan issuance (in shares)		9,639
Restricted stock buy back (in shares)		(8,822)	8,822
Restricted stock buy back	(54)		$ (54)
Net income	975				975
Ending balance (in shares) at Mar. 31, 2018		40,490,563	89,874
Ending balance at Mar. 31, 2018	191,623	$ 40	$ (720)	159,739	32,564	0
Beginning balance (in shares) at Dec. 31, 2017		40,393,033	81,052
Beginning balance at Dec. 31, 2017	190,022	$ 40	$ (666)	159,059	31,589	0
Increase (Decrease) in Stockholders' Equity
Foreign currency translation adjustment	76
Net income	10,996
Ending balance (in shares) at Jun. 30, 2018		40,529,182	110,655
Ending balance at Jun. 30, 2018	202,290	$ 40	$ (839)	160,428	42,585	76
Beginning balance (in shares) at Mar. 31, 2018		40,490,563	89,874
Beginning balance at Mar. 31, 2018	191,623	$ 40	$ (720)	159,739	32,564	0
Increase (Decrease) in Stockholders' Equity
Foreign currency translation adjustment	76					76
Vesting of restricted stock (in shares)		59,400
Stock-based compensation	650			650
Employee stock purchase plan compensation	38			38
Employee stock purchase plan issuance (in shares)		0
Employee stock purchase plan issuance	1			1
Restricted stock buy back (in shares)		(20,781)	20,781
Restricted stock buy back	(119)		$ (119)
Net income	10,021				10,021
Ending balance (in shares) at Jun. 30, 2018		40,529,182	110,655
Ending balance at Jun. 30, 2018	202,290	$ 40	$ (839)	160,428	42,585	76
Beginning balance (in shares) at Dec. 31, 2018		39,974,478	699,035
Beginning balance at Dec. 31, 2018	209,360	$ 40	$ (2,839)	162,195	50,277	(313)
Increase (Decrease) in Stockholders' Equity
Foreign currency translation adjustment	145					145
Vesting of restricted stock (in shares)		30,729
Stock-based compensation	790			790
Employee stock purchase plan compensation	9			9
Employee stock purchase plan issuance (in shares)		20,954
Employee stock purchase plan issuance	40			40
Restricted stock buy back (in shares)		(5,714)	5,714
Restricted stock buy back	(23)		$ 23
Net income	4,033				4,033
Ending balance (in shares) at Mar. 31, 2019		40,020,447	704,749
Ending balance at Mar. 31, 2019	214,354	$ 40	$ (2,862)	163,034	54,310	(168)
Beginning balance (in shares) at Dec. 31, 2018		39,974,478	699,035
Beginning balance at Dec. 31, 2018	209,360	$ 40	$ (2,839)	162,195	50,277	(313)
Increase (Decrease) in Stockholders' Equity
Foreign currency translation adjustment	236
Net income	18,309
Ending balance (in shares) at Jun. 30, 2019		40,209,409	740,440
Ending balance at Jun. 30, 2019	229,368	$ 40	$ (2,978)	163,797	68,586	(77)
Beginning balance (in shares) at Mar. 31, 2019		40,020,447	704,749
Beginning balance at Mar. 31, 2019	214,354	$ 40	$ (2,862)	163,034	54,310	(168)
Increase (Decrease) in Stockholders' Equity
Foreign currency translation adjustment	91					91
Vesting of restricted stock (in shares)		224,653
Stock-based compensation	754			754
Employee stock purchase plan compensation	9			9
Employee stock purchase plan issuance (in shares)		0
Employee stock purchase plan issuance	0			0
Restricted stock buy back (in shares)		(35,691)	35,691
Restricted stock buy back	(116)		$ 116
Net income	14,276				14,276
Ending balance (in shares) at Jun. 30, 2019		40,209,409	740,440
Ending balance at Jun. 30, 2019	$ 229,368	$ 40	$ (2,978)	$ 163,797	$ 68,586	$ (77)

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Operating activities:
Net income	$ 18,309	$ 10,996
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and accretion of asset retirement obligation	12,501	7,359
Amortization of intangible assets	837	284
Asset retirement obligation settlement	(1,883)	(1,783)
Amortization of deferred financing cost	117	138
Accretion of debt discount	331	116
Deferred income taxes	4,287	2,647
Stock-based compensation, net	1,544	1,298
Employee stock purchase plan compensation	18	0
Change in contingent consideration fair value	(1,542)	0
Changes in assets and liabilities, net of effects of acquisitions:
Accounts receivable	(26,663)	(597)
Unbilled receivables	512	(3,715)
Inventories	6,194	(315)
Prepaid expenses and other assets	1,587	(2,975)
Deferred revenue	(694)	4,805
Accounts payable	(1,977)	(3,057)
Accrued and other expenses	3,925	3,712
Net cash provided by operating activities	17,403	18,913
Investing activities:
Acquisition of businesses, net of cash acquired	0	(29,878)
Purchases of property, plant and equipment	(13,869)	(66,841)
Net cash used in investing activities	(13,869)	(96,719)
Financing activities:
Proceeds from the issuance of notes payable	4,696	0
Repayments of notes payable	(734)	(288)
Payments under equipment financing obligations	(50)	(140)
Payment of deferred financing and debt issuance costs	(835)	(146)
Proceeds from revolving credit facility	22,750	59,000
Repayment of revolving credit facility	(28,250)	(14,000)
Payment of contingent consideration	(1,225)	0
Proceeds from equity issuance	40	71
Purchase of treasury stock	(139)	(173)
Net cash (used in) provided by financing activities	(3,747)	44,324
Effect of exchange rate changes on cash and cash equivalents	0	0
Net decrease in cash and cash equivalents	(213)	(33,482)
Cash and cash equivalents at beginning of year	1,466	35,227
Cash and cash equivalents at end of period	1,253	1,745
Non-cash investing activities:
Contingent consideration	0	9,200
Asset retirement obligation	3,301	2,086
Non-cash financing activities:
Capitalized expenditures in accounts payable and accrued expenses	$ 1,237	$ 6,585

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Organization and Nature of Business

6 Months Ended

Jun. 30, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization and Nature of Business

Organization and Nature of Business

Smart Sand, Inc. and its subsidiaries are headquartered in The Woodlands, Texas. The Company was incorporated in July 2011, and is a fully integrated frac sand supply and services company, offering complete mine to wellsite logistics solutions. The Company is engaged in the excavation, processing and sale of industrial sand, or proppant, for use in hydraulic fracturing operations for the oil and natural gas industry. Its integrated Oakdale facility, with on-site rail infrastructure and wet and dry sand processing facilities, has access to two Class I rail lines that enables the Company to process and cost-effectively deliver products to its customers. The Company also offers proppant logistics solutions to its customers through, among other things, its in-basin transloading terminal and its SmartSystems^TM wellsite proppant storage solution capabilities.

The Company completed construction of the first phase of its mine and processing facility in Oakdale, Wisconsin and commenced operations in July 2012, and subsequently expanded its operations in 2014, 2015 and 2018 to the current annual processing capacity of approximately 5.5 million tons.

On March 15, 2018, the Company acquired the rights to operate a unit train capable transloading terminal in Van Hook, North Dakota to service the Bakken Formation in the Williston Basin and began providing Northern White Sand in-basin in April 2018.

On June 1, 2018, the Company acquired substantially all of the assets of Quickthree Solutions, Inc. (“Quickthree”), a manufacturer of portable vertical proppant storage solution systems. This is now part of our SmartSystems proppant storage solutions under which we offer various solutions that create efficiencies, flexibility, enhanced safety and reliability for customers by providing the capability to unload, store and deliver proppant at the wellsite, as well as the ability to rapidly set up, takedown and transport the entire system. The SmartDepot^TM silo system includes passive and active dust suppression technology, along with the capability of a gravity-fed operation.

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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.

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Acquisitions

6 Months Ended

Jun. 30, 2019

Business Combinations [Abstract]

Acquisitions

Acquisitions

Asset Acquisition - Van Hook Crude Terminal, LLC

The acquisition of the assets of Van Hook Crude Terminal, LLC occurred on March 15, 2018. The Company acquired all of the rights, title, and interest in certain properties and assigned contracts for a total consideration of $15,549 in cash. The acquisition cost has been allocated to the Company’s fixed assets as set forth below.

Machinery, equipment and tooling	$	1,478
Plant and building	1,407
Railroad and sidings	9,926
Land improvements	2,738
Total assets acquired	$	15,549

Business Combination - Quickthree Solutions Inc.

On June 1, 2018, the Company acquired substantially all of the assets of Quickthree, a manufacturer of portable vertical frac sand storage solution systems that has been integrated into the Company’s SmartSystems offerings.

The aggregate purchase price consisted of approximately $30,000 cash paid at closing, subject to adjustment based upon Quickthree’s closing date working capital, and up to $12,750 in potential earn-out payments over a three-year period after closing. Payment of the earn-out is based upon the production of SmartDepot (formerly known as Quickstand) silos and related equipment during the earn-out period. The closing portion of the purchase price was paid using cash on hand and advances under the Company’s Credit Facility. The Company expects the earn-out portion of the purchase price to be paid using cash on hand, equipment financing options available to the Company and advances under the Company’s Credit Facility. Goodwill in this transaction was attributable to planned expansion into the wellsite proppant storage solutions market, and is fully deductible for tax purposes. The table below presents the calculation of the total purchase consideration.

Base price - cash	$	30,000
Contingent consideration – earnout	9,200
Working capital adjustment	(122		)
Total purchase consideration	$	39,078

The Company’s allocation of the purchase price in connection with the acquisition was calculated as follows:

	Fair Value		Useful Life (in years)
Assets Acquired
Accounts receivable	$	112
Inventory	1,700
Prepaid expenses and other current assets	126
Total current assets acquired	$	1,938
Property, plant and equipment	740
Customer relationships	270		1 year
Developed technology	18,800		13 years
Trade name	900		Indefinite
Goodwill	16,935
Other assets	225
Total non-current assets acquired	37,870
Total assets acquired	$	39,808
Liabilities Assumed
Accounts payable	$	331
Accrued and other expenses	399
Total liabilities assumed	730
Estimated fair value of net assets acquired	$	39,078

There were no acquisition costs for the Quickthree acquisition during the three and six months ended June 30, 2019. Total acquisition costs for the Quickthree acquisition incurred during the three and six months ended June 30, 2018 were $843 and $1,159, respectively, which are included in selling, general and administrative expense in the Company’s condensed consolidated income statements. The purchase price allocation was considered complete as of December 31, 2018.

The goodwill and trade name have been fully impaired as of December 31, 2018. The Company conducts its evaluation of goodwill at the reporting unit level on an annual basis as of December 31 and more frequently if events or circumstances indicate that the carrying value of a reporting unit exceeds its fair value. All of the Company’s operations are in one reporting unit. The Company determined the fair value of its reporting unit using both a market multiples approach and the discounted cash flows method. In the second half of 2018, the Company saw a decline in demand for frac sand, consistent with the industry as a whole, which resulted in a decline in the Company’s stock price near the measurement date. The decline in the Company’s stock price near the measurement date and the relationship between the resulting market capitalization and the equity recorded on the Company’s balance sheet resulted in a full impairment of goodwill as of December 31, 2018.

Contingent Consideration 

The Company determined the fair value of the contingent consideration to be $9,200 at June 1, 2018, the acquisition date and recorded it as a liability in the Company’s unaudited condensed consolidated balance sheets. Each reporting period, the Company reassesses its inputs including market comparable information and management assessments regarding potential future scenarios, then discounts the liabilities to present value. For the three and six months ended June 30, 2019, the Company recorded an adjustment to the fair value of contingent consideration in the amount of $575 and $1,542, respectively, on the condensed consolidated income statements, related to the change in fair value of contingent consideration. The Company will continue to reassess earn-out calculations related to the contingent consideration in future periods.

The Company’s contingent consideration is remeasured at fair value on a recurring basis and is comprised of payments for production of silos and related equipment during the three-year period after the acquisition. Contingent liabilities are valued using significant inputs that are not observable in the market, which are defined as Level 3 inputs according to fair value measurement accounting. The Company used a probability-weighted average between 9 and 52 manufactured SmartDepot fleets over the earnout period, as the basis of its fair value determination. The actual contingent consideration could vary from the determined amount based on the actual number of SmartDepot silos and related equipment produced and the timing thereof. The Company estimates the fair value of contingent liabilities using a Monte Carlo simulation-based, real option pricing methodology implementation of the Income Approach. This approach utilizes inputs including market comparable information and management assessments regarding potential future scenarios, then discounts the liabilities to present value. The Company believes its estimates and assumptions are reasonable, however, there is significant judgment involved. The Company’s financial instruments remeasured and carried at fair value were as follows:

	June 30, 2019		Level 1		Level 2		Level 3
Contingent consideration	$	4,400	$	—	$	—	$	4,400
Total liabilities	$	4,400	$	—	$	—	$	4,400

The following table provides a summary of changes in the fair value of the Company’s Level 3 financial instruments for the six months ended June 30, 2019.

Balance as of December 31, 2018	$	7,167
Payment of contingent consideration	(1,225		)
Fair value adjustment	(1,542		)
Balance as of June 30, 2019	$	4,400

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Inventories

6 Months Ended

Jun. 30, 2019

Inventory Disclosure [Abstract]

Inventories

Inventories

Sand inventories consisted of the following:

	June 30, 2019		December 31, 2018
Raw material	$	628	$	1,201
Work in progress	6,067		10,070
Finished goods	4,769		4,648
Spare parts	917		1,356
Total sand inventory	$	12,381	$	17,275

SmartSystems inventory represents work in progress inventory related to existing arrangements at the time the Company acquired Quickthree and consisted of the following:

	June 30, 2019		December 31, 2018
Work in progress	$	—	$	1,300
Total SmartSystems inventory	$	—	$	1,300
Total inventory	$	12,381	$	18,575

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Property, Plant and Equipment, net

6 Months Ended

Jun. 30, 2019

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment, net

Property, Plant and Equipment, net

Net property, plant and equipment consisted of:

	June 30, 2019		December 31, 2018
Machinery, equipment and tooling	$	16,080	$	14,858
SmartSystems	9,532		5,286
Vehicles	2,214		1,955
Furniture and fixtures	1,217		1,140
Plant and building	160,413		158,882
Real estate properties	4,855		4,601
Railroad and sidings	27,347		27,347
Land and land improvements	27,421		27,167
Asset retirement obligation	19,770		16,469
Mineral properties	10,075		10,075
Deferred mining costs	1,806		1,806
Construction in progress	25,132		21,619
	305,862		291,205
Less: accumulated depreciation and depletion	54,884		42,809
Total property, plant and equipment, net	$	250,978	$	248,396

Depreciation expense was $6,171 and $3,994 for the three months ended June 30, 2019 and 2018, respectively, and $12,038 and $7,151 for the six months ended June 30, 2019 and 2018, respectively. Depletion expense was $13 and $18 for the three months ended June 30, 2019 and 2018, respectively, and $18 and $20 for the six months ended June 30, 2019 and 2018, respectively.

The Company capitalized no interest expense associated with the construction of new property, plant and equipment for the three and six months ended June 30, 2019 and 2018.

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Intangible Assets, net

6 Months Ended

Jun. 30, 2019

Intangible Assets, Net (Excluding Goodwill) [Abstract]

Intangible Assets, Net and Goodwill

Intangible Assets, net

The following table summarizes the Company’s intangible assets as of June 30, 2019 and December 31, 2018:

	Estimated Useful Life (Years)	Gross Carrying Amount at December 31, 2018		Accumulated Amortization		Net Book Value at June 30, 2019
Developed technology	13	$	18,800	$	1,567	$	17,233
Customer relationships	1	270		270		—
		$	19,070	$	1,837	$	17,233

The Company uses the straight-line method to determine the amortization expense for its definite lived intangible assets. The weighted-average remaining useful life for the intangible assets is 11.9 years. Amortization expense related to the purchased intangible assets was $407 and $284 for the three months ended June 30, 2019 and 2018, respectively, and $837 and $284 for the six months ended June 30, 2019 and 2018, respectively. The table below reflects the future estimated amortization expense for amortizable intangible assets as of June 30, 2019.

Remainder of 2019	$	723
2020	1,446
2021	1,446
2022	1,446
2023	1,446
Thereafter	10,726
Total	$	17,233

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Accrued and Other Expenses

6 Months Ended

Jun. 30, 2019

Payables and Accruals [Abstract]

Accrued and Other Expenses

Accrued and Other Expenses

Accrued and other expenses were comprised of the following:

	June 30, 2019		December 31, 2018
Employee related expenses	$	2,993	$	1,894
Accrued construction related expenses	259		948
Accrued professional fees	428		465
Accrued royalties	1,678		1,780
Accrued freight and delivery charges	1,976		2,556
Accrued real estate tax	403		—
Accrued utilities	537		—
Accrued income taxes	634		—
Deferred rent	—		712
Other accrued liabilities	1,329		37
Total accrued liabilities	$	10,237	$	8,392

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Debt

6 Months Ended

Jun. 30, 2019

Debt Disclosure [Abstract]

Debt

Debt

The current portion of long-term debt consists of the following:

	June 30, 2019		December 31, 2018
Credit Facility	$	38,255	$	—
Finance leases	137		90
Notes payable	1,846		739
Total current portion of long-term debt	$	40,238	$	829

Long-term debt, net of current portion consists of the following:

	June 30, 2019		December 31, 2018
Credit Facility	$	—	$	44,255
Finance leases	498		547
Notes payable	5,898		3,091
Total long-term debt, net of current portion	$	6,396	$	47,893

Credit Facility

On February 22, 2019, we entered into an agreement with the existing lenders on the Credit Facility to, among other things, (i) extend the maturity date of the Credit Facility to June 30, 2020 and (ii) reduce the total capacity to $50,000 by December 31, 2019. The outstanding balance on the Credit Facility is included in long-term liabilities on our consolidated balance sheet at December 31, 2018. As of June 30, 2019 and December 31, 2018, $39,000 and $44,500, respectively, were outstanding under the Credit Facility and the Company was in compliance with all covenants. As of June 30, 2019, the total borrowing capacity is $55,000 with undrawn availability at $16,000. The Credit Facility matures on June 30, 2020 and as such, the Company has included the balance in the current portion of long-term debt as of June 30, 2019. The Company is currently pursuing plans to refinance the Credit Facility and extend the current obligations beyond one year.

As of June 30, 2019 and December 31, 2018, gross deferred financing fees of $1,558 and $728 are presented as a discount to the carrying value of the debt and the unamortized amount is presented as a reduction of current portion of long term debt as of June 30, 2019 and long-term debt, net of current portion, as of December 31, 2018 on the consolidated balance sheets. Certain deferred financing costs incurred when there was no balance on the Credit Facility are included in Other assets line item on the consolidated balance sheet. Accretion of debt discount of $186 and $60 is included in interest expense for the three months ended June 30, 2019 and 2018, respectively. Accretion of debt discount of $331 and $116 is included in interest expense for the six months ended June 30, 2019 and 2018, respectively. Amortization expense of the deferred financing charges of $55 and $78 is included in interest expense for the three months ended June 30, 2019 and 2018, respectively. Amortization expense of the deferred financing charges of $117 and $138 is included in interest expense for the six months ended June 30, 2019 and 2018, respectively.

	June 30, 2019			December 31, 2018
Revolving credit facility	$	39,000		$	44,500
Less: Debt discount, net	(745		)	(245		)
Revolving credit facility, net	$	38,255		$	44,255

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Leases (Notes)

6 Months Ended

Jun. 30, 2019

Leases [Abstract]

Leases

Leases

Current Period Disclosures under ASC 842

Lessee

At June 30, 2019, the operating and financing components of the Company’s right-of-use assets and lease liabilities on the consolidated balance sheet are as follows:

	Balance Sheet Location	June 30, 2019
Right-of-use assets
Operating	Operating right-of-use assets	$	32,417
Financing	Property, plant and equipment, net	659
Total right-of use assets		$	33,076
Lease liabilities
Operating	Operating lease liabilities, current and long-term portions	$	33,041
Financing	Long-term debt, current and long-term portions	615
Total lease liabilities		$	33,656

Operating lease costs are recorded in a single expense on the income statement and allocated to the right-of-use assets and the related lease liabilities as depreciation expense and interest expense, respectively. Lease cost recognized in the consolidated income statement for the three and six months ended June 30, 2019 is as follows:

	Three Months Ended		Six Months Ended
	June 30, 2019		June 30, 2019
Finance lease cost
Amortization of right-of-use assets	$	34	$	64
Interest on lease liabilities	11		22
Operating lease cost	4,257		7,364
Short-term lease cost	120		134
Total lease cost	$	4,422	$	7,584

Other information related to the Company’s leasing activity for the six months ended June 30, 2019 is as follows:

	Six Months Ended
	June 30, 2019
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows used for finance leases	$	20
Operating cash flows used for operating leases	$	7,288
Financing cash flows used for finance leases	$	58
Right-of-use assets obtained in exchange for new finance lease liabilities	$	55
Right-of-use assets recorded upon adoption	$	35,939
Right-of-use assets obtained in exchange for new operating lease liabilities	$	4,100
Weighted average remaining lease term - finance leases	4.0 years
Weighted average discount rate - finance leases	6.69		%
Weighted average remaining lease term - operating leases	2.9 years
Weighted average discount rate - operating leases	5.50		%

Maturities of the Company’s lease liabilities as of June 30, 2019 are as follows:

Year	Operating Leases			Finance Leases			Total
Remainder of 2019	$	7,864		$	116		$	7,980
2020	12,762			165			12,927
2021	8,847			165			9,012
2022	3,979			151			4,130
2023	1,394			103			1,497
Thereafter	888			—			888
Total cash lease payments	35,734			700			36,434
Less: amounts representing interest	(2,693		)	(85		)	(2,778		)
Total lease liabilities	$	33,041		$	615		$	33,656

Prior period disclosures under ASC 840

Capital Leases

The Company entered into various lease arrangements to lease equipment. Equipment cost of $657 has been capitalized and included in the Company’s property, plant and equipment as of December 31, 2018. Depreciation expense under leased assets was approximately $54 and $109 for the three and six months ended June 30, 2018, respectively.

Operating Leases

Expense related to operating leases and other rental agreements was $3,363 and $6,693 for three and six months ended June 30, 2018, respectively. Lease expense related to railcars is included in cost of goods sold in the condensed consolidated income statements.

Leases

Leases

Current Period Disclosures under ASC 842

Lessee

At June 30, 2019, the operating and financing components of the Company’s right-of-use assets and lease liabilities on the consolidated balance sheet are as follows:

	Balance Sheet Location	June 30, 2019
Right-of-use assets
Operating	Operating right-of-use assets	$	32,417
Financing	Property, plant and equipment, net	659
Total right-of use assets		$	33,076
Lease liabilities
Operating	Operating lease liabilities, current and long-term portions	$	33,041
Financing	Long-term debt, current and long-term portions	615
Total lease liabilities		$	33,656

Operating lease costs are recorded in a single expense on the income statement and allocated to the right-of-use assets and the related lease liabilities as depreciation expense and interest expense, respectively. Lease cost recognized in the consolidated income statement for the three and six months ended June 30, 2019 is as follows:

	Three Months Ended		Six Months Ended
	June 30, 2019		June 30, 2019
Finance lease cost
Amortization of right-of-use assets	$	34	$	64
Interest on lease liabilities	11		22
Operating lease cost	4,257		7,364
Short-term lease cost	120		134
Total lease cost	$	4,422	$	7,584

Other information related to the Company’s leasing activity for the six months ended June 30, 2019 is as follows:

	Six Months Ended
	June 30, 2019
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows used for finance leases	$	20
Operating cash flows used for operating leases	$	7,288
Financing cash flows used for finance leases	$	58
Right-of-use assets obtained in exchange for new finance lease liabilities	$	55
Right-of-use assets recorded upon adoption	$	35,939
Right-of-use assets obtained in exchange for new operating lease liabilities	$	4,100
Weighted average remaining lease term - finance leases	4.0 years
Weighted average discount rate - finance leases	6.69		%
Weighted average remaining lease term - operating leases	2.9 years
Weighted average discount rate - operating leases	5.50		%

Maturities of the Company’s lease liabilities as of June 30, 2019 are as follows:

Year	Operating Leases			Finance Leases			Total
Remainder of 2019	$	7,864		$	116		$	7,980
2020	12,762			165			12,927
2021	8,847			165			9,012
2022	3,979			151			4,130
2023	1,394			103			1,497
Thereafter	888			—			888
Total cash lease payments	35,734			700			36,434
Less: amounts representing interest	(2,693		)	(85		)	(2,778		)
Total lease liabilities	$	33,041		$	615		$	33,656

Prior period disclosures under ASC 840

Capital Leases

The Company entered into various lease arrangements to lease equipment. Equipment cost of $657 has been capitalized and included in the Company’s property, plant and equipment as of December 31, 2018. Depreciation expense under leased assets was approximately $54 and $109 for the three and six months ended June 30, 2018, respectively.

Operating Leases

Expense related to operating leases and other rental agreements was $3,363 and $6,693 for three and six months ended June 30, 2018, respectively. Lease expense related to railcars is included in cost of goods sold in the condensed consolidated income statements.

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Asset Retirement Obligation

6 Months Ended

Jun. 30, 2019

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligation

Asset Retirement Obligation

The Company had a post-closure reclamation and site restoration obligation of $15,185 as of June 30, 2019. The following is a reconciliation of the total reclamation liability for asset retirement obligations.

Balance at December 31, 2018	$	13,322
Additions and revisions of prior estimates	3,301
Accretion expense	445
Settlement of liability	(1,883		)
Balance at June 30, 2019	$	15,185

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Revenue Revenue (Notes)

6 Months Ended

Jun. 30, 2019

Revenue from Contract with Customer [Abstract]

Revenue

Revenue

Disaggregation of Revenue

The following table presents the Company’s revenues disaggregated by type and percentage of total revenues for the periods indicated.

	Three Months Ended June 30,								Six Months Ended June 30,
	2019				2018				2019				2018
	Revenue		Percentage of Total Revenue		Revenue		Percentage of Total Revenue		Revenue		Percentage of Total Revenue		Revenue		Percentage of Total Revenue
Sand sales revenue	$	26,862	39	%	$	34,626	64	%	$	48,008	40	%	$	56,913	58	%
Reservation revenue	4,500		7	%	5,838		11	%	9,000		8	%	12,466		13	%
Shortfall revenue	16,283		24	%	668		1	%	22,039		18	%	668		1	%
Logistics revenue	20,296		30	%	13,316		24	%	40,669		34	%	27,029		28	%
Total revenues	$	67,941	100	%	$	54,448	100	%	$	119,716	100	%	$	97,076	100	%

The Company recorded $4,095of deferred revenue on the balancesheet on December 31, 2018, of which $1,017 has been recognized in the six months ended June 30, 2019 and the Company expects to recognize an additional $578 in 2019 and the remainder in 2020.

Segment Information

Reportable 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, including the recently acquired logistics assets and wellsite proppant storage solutions business, as one reportable operating segment.

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Earnings Per Share (Notes)

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

Basic net income per share of common stock is computed by dividing net income attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period, excluding the dilutive effects of restricted stock. Diluted net income per share of common stock is computed by dividing the net income attributable to common stockholders by the sum of the weighted-average number of shares of common stock outstanding during the period plus the potential dilutive effects of restricted stock outstanding during the period calculated in accordance with the treasury stock method, although restricted stock is excluded if their effect is anti-dilutive. The number of shares underlying equity-based awards that were excluded from the calculation of diluted earnings per share as their effect would be anti-dilutive was 765 and 670 for the three months ended June 30, 2019 and 2018, respectively. The number of shares underlying equity-based awards that were excluded from the calculation of diluted earnings per share as their effect would be anti-dilutive was 765 and 670 for the six months ended June 30, 2019 and 2018, respectively. The following table reconciles the weighted-average common shares outstanding used in the calculation of basic net income per share to the weighted average common shares outstanding used in the calculation of diluted net income per share.

	Three Months Ended June 30,		Six Months Ended June 30,
	2019	2018	2019	2018
Weighted average common shares outstanding	40,074	40,499	40,035	40,455
Assumed conversion of restricted stock	99	51	82	95
Diluted weighted average common stock outstanding	40,173	40,550	40,117	40,550

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Stock-Based Compensation

6 Months Ended

Jun. 30, 2019

Share-based Payment Arrangement [Abstract]

Stock-Based Compensation

Stock-Based Compensation

Equity Incentive Plans

In May 2012, the Board approved the 2012 Equity Incentive Plan (“2012 Plan”), which provides for the issuance of equity awards of up to a maximum of 440 shares of the Company’s common stock to employees, non-employee members of the Board, and consultants of the Company. During 2014, the 2012 Plan was amended to provide for the issuance of equity awards of up to 880 shares of the Company’s common stock. The awards can be issued in the form of incentive stock options, non-qualified stock options or restricted stock, and have expiration dates of 5 or 10 years after issuance, depending on whether the recipient already holds above 10% of the voting power of all classes of the Company’s shares. The exercise price will be based on the fair market value of the share on the date of issuance; vesting periods will be determined by the board upon issuance of the equity award. Subsequent to the Company’s initial public offering, no additional equity awards were made under the 2012 Plan.

In November 2016, in connection with its initial public offering, the Company adopted the 2016 Omnibus Incentive Plan (“2016 Plan”) which provides for the issuance of equity awards of up to a maximum of 3,911 shares of the Company’s common stock to employees, non-employee members of the board and consultants of the Company. Together the 2012 Plan and the 2016 Plan are referenced to as the “Plans”.

During the six months ended June 30, 2019 and 2018, 335 and 723 shares of restricted stock were issued under the Plans, respectively. The grant date fair value per share of all the outstanding restricted stock was $2.44 - $19.00. The shares vest over one to four years from their respective grant dates. For equity awards issued under the 2016 Plan, the grant date fair value was either the actual market price of the Company’s shares or an adjusted price using a Monte Carlo simulation for awards subject to the Company’s performance as compared to a defined peer group. For equity awards issued under the 2012 Plan, the grant date fair value was calculated based on a weighted analysis of (i) publicly-traded companies in a similar line of business to the Company (market comparable method)—Level 2 inputs, and (ii) discounted cash flows of the Company—Level 3 inputs. The Company recognized, in operating expenses on the condensed consolidated income statements, $754 and $670 of compensation expense for the restricted stock during the three months ended June 30, 2019 and 2018, respectively. The Company recognized, in operating expenses on the consolidated income statements, $1,544 and $1,260 of compensation expense for the restricted stock during the six months ended June 30, 2019 and 2018, respectively. At June 30, 2019, the Company had unrecognized compensation expense of $4,981 related to granted but unvested stock awards, which is to be recognized as follows:

Remainder of 2019	$	1,304
2020	2,075
2021	1,040
2022	461
2023	101
Total	$	4,981

The following table summarizes restricted stock activity under the Plans from December 31, 2018 through June 30, 2019:

	Number of Shares		Weighted Average
Unvested, December 31, 2018	1,027		$	9.83
Granted	335		$	2.54
Vested	(256	)	$	7.30
Forfeited	(18	)	$	6.38
Unvested, June 30, 2019	1,088		$	9.31

Employee Stock Purchase Plan

Shares of the Company’s common stock may be purchased by eligible employees under the Company’s 2016 Employee Stock Purchase Plan in six-month intervals at a purchase price equal to at least 85% of the lesser of the fair market value of the Company’s common stock on either the first day or the last day of each six-month offering period. Employee purchases may not exceed 20% of their gross compensation during an offering period.

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Income Taxes

6 Months Ended

Jun. 30, 2019

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The Company calculates its interim income tax provision by estimating the annual expected effective tax rate and applying that rate to its ordinary year-to-date earnings or loss. In addition, the effect of changes in enacted tax laws, rates or tax status is recognized in the interim period in which the change occurs.

For the three months ended June 30, 2019 and 2018, the effective tax rate was approximately 21.8% and 19.4%, respectively, based on the annual effective tax rate net of discrete federal and state taxes. For the six months ended June 30, 2019 and 2018, the effective tax rate was approximately 21.3% and 19.4%, respectively, based on the annual effective tax rate net of discrete federal and state taxes. For the three and six months ended June 30, 2019 and 2018, the statutory tax rate was 21.0%. The computation of the effective tax rate includes modifications from the statutory rate such as income tax credits, among other items.

In assessing the realizability of deferred tax assets, the Company considered whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the period in which those temporary differences become deductible. At June 30, 2019 and December 31, 2018, based on the Company’s future income projections and reversal of taxable temporary differences, management determined it was more likely than not that the Company will be able to realize the benefits of the deductible temporary differences. As of June 30, 2019 and December 31, 2018, the Company determined no valuation allowance was necessary.

The Company has evaluated its tax positions taken as of June 30, 2019 and December 31, 2018 and believes all positions taken would be upheld under examination from income taxing authorities. Therefore, no liability for the effects of uncertain tax positions has been recorded in the accompanying consolidated balance sheets as of June 30, 2019 or December 31, 2018. The Company is open to examination by taxing authorities beginning with the 2014 tax year.

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Concentrations

6 Months Ended

Jun. 30, 2019

Risks and Uncertainties [Abstract]

Concentrations

Concentrations

As of June 30, 2019, four customers accounted for 89% of the Company’s total accounts receivable. As of December 31, 2018, four customers accounted for 89% of the Company’s total accounts receivable.

During the three months ended June 30, 2019, 62% of the Company’s revenues were earned from three customers. During the three months ended June 30, 2018, 64% of the Company’s revenues were earned from four customers. During the six months ended June 30, 2019, 60% of the Company’s revenues were earned from three customers. During the six months ended June 30, 2018, 65% of the Company’s revenues were earned from four customers.

As of June 30, 2019, two vendors accounted for 37% of the Company’s accounts payable.  As of December 31, 2018, one vendor accounted for 16% of the Company’s accounts payable.

During the three months ended June 30, 2019, two suppliers accounted for 53% of the Company’s cost of goods sold. During the three months ended June 30, 2018, one supplier accounted for 31% of the Company’s cost of goods sold. During the six months ended June 30, 2019, three suppliers accounted for 64% of the Company’s cost of goods sold. During the six months ended June 30, 2018, one supplier accounted for 34% of the Company’s cost of goods sold.

Currently, the Company’s inventory and operations are primarily located in Wisconsin. There is a risk of loss if there are significant environmental, legal or economic changes to this geographic area. The Company primarily utilizes one third-party rail company to ship its products to customers from its plant. There is a risk of business loss if there are significant impacts to this third party’s operations.

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2019

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Future Minimum Commitments

The Company is obligated under certain contracts for minimum payments for the right to use land for extractive activities, which is not within the scope of leases under ASC 842. Future minimum annual commitments under such contracts at June 30, 2019 are as follows:

Remainder of 2019	$	208
2020	2,275
2021	2,275
2022	2,275
2023	2,275
Thereafter	31,850
Total	$	41,158

Litigation

In addition to the matters described below, we may be subject to various legal proceedings, claims and governmental inspections, audits or investigations arising out of the Company’s operations in the normal course of business, which cover matters such as general commercial, governmental and trade regulations, product liability, environmental, intellectual property, employment and other actions. Although the outcomes of these routine claims cannot be predicted with certainty, in the opinion of management, the ultimate resolution of these matters would not have a material adverse effect on the Company’s financial statements.

For those customers with which the Company has pending litigation, as described below, the Company recorded $17,573 and $24,252 of revenue for the three and six months ended June 30, 2019, respectively. As of June 30, 2019, $34,564 of accounts and unbilled receivables are attributable to customers with which we have pending litigation.

U.S. Well Services, LLC

On January 14, 2019, Smart Sand, Inc. (plaintiff) filed suit against U.S. Well Services, LLC (defendant) in the Superior Court of the State of Delaware in and for New Castle County (C.A. No. N19C-01-144-PRW [CCLD]). In the suit, plaintiff alleges that defendant is in breach of contract for failure to pay amounts due and payable under a long-term take-or-pay Master Product Purchase Agreement and coterminous Railcar Usage Agreement and is seeking unspecified monetary damages and other appropriate relief. Plaintiff is also seeking a declaratory judgment that the relevant agreements are continuing in full force and effect despite defendant’s purported notice of termination to the contrary. Defendant has filed an Amended Answer, Affirmative Defenses and Counterclaim seeking unspecified monetary damages and declaratory relief. The Company intends to both vigorously prosecute its claims and defend against U.S. Well’s counterclaims. At this time, the Company is unable to express an opinion as to the likely outcome of the matter. Amounts recorded as accounts and unbilled receivables in the financial statements do not represent the full amounts sought in this lawsuit.

Schlumberger Technology Corporation

On January 3, 2019, Smart Sand, Inc. (plaintiff) filed suit against Schlumberger Technology Corporation (defendant) in the District Court of Harris County, Texas (Case No. 2019-00557). In the suit, plaintiff alleges that defendant is in breach of contract for failure to pay amounts due and payable under a long-term take-or-pay Master Product Purchase Agreement and is seeking unspecified monetary damages and other appropriate relief. Defendant has filed an Answer, Affirmative Defenses and Counterclaim seeking unspecified monetary damages and declaratory relief. The Company intends to both vigorously prosecute its claims and defend against defendant’s counterclaims. At this time, the Company is unable to express an opinion as to the likely outcome of the matter. Amounts recorded as accounts and unbilled receivables in the financial statements do not represent the full amounts sought in this lawsuit.

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Summary of Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2019

Accounting Policies [Abstract]

Consolidation

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.

Segment Information

Segment Information

Reportable 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, including the recently acquired logistics assets and wellsite proppant storage solutions business, as one reportable operating segment.

Reclassification

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.

Substantial Doubt about Going Concern [Text Block]

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

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.

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Acquisitions (Tables)

6 Months Ended

Jun. 30, 2019

Business Combinations [Abstract]

Schedule of useful lives of property, plant and equipment

The acquisition cost has been allocated to the Company’s fixed assets as set forth below.

Machinery, equipment and tooling	$	1,478
Plant and building	1,407
Railroad and sidings	9,926
Land improvements	2,738
Total assets acquired	$	15,549

Net property, plant and equipment consisted of:

	June 30, 2019		December 31, 2018
Machinery, equipment and tooling	$	16,080	$	14,858
SmartSystems	9,532		5,286
Vehicles	2,214		1,955
Furniture and fixtures	1,217		1,140
Plant and building	160,413		158,882
Real estate properties	4,855		4,601
Railroad and sidings	27,347		27,347
Land and land improvements	27,421		27,167
Asset retirement obligation	19,770		16,469
Mineral properties	10,075		10,075
Deferred mining costs	1,806		1,806
Construction in progress	25,132		21,619
	305,862		291,205
Less: accumulated depreciation and depletion	54,884		42,809
Total property, plant and equipment, net	$	250,978	$	248,396

Schedule of assets acquired and liabilities assumed

The Company’s allocation of the purchase price in connection with the acquisition was calculated as follows:

	Fair Value		Useful Life (in years)
Assets Acquired
Accounts receivable	$	112
Inventory	1,700
Prepaid expenses and other current assets	126
Total current assets acquired	$	1,938
Property, plant and equipment	740
Customer relationships	270		1 year
Developed technology	18,800		13 years
Trade name	900		Indefinite
Goodwill	16,935
Other assets	225
Total non-current assets acquired	37,870
Total assets acquired	$	39,808
Liabilities Assumed
Accounts payable	$	331
Accrued and other expenses	399
Total liabilities assumed	730
Estimated fair value of net assets acquired	$	39,078

Schedule of consideration transferred

The table below presents the calculation of the total purchase consideration.

Base price - cash	$	30,000
Contingent consideration – earnout	9,200
Working capital adjustment	(122		)
Total purchase consideration	$	39,078

Schedule of contingent consideration

The Company’s financial instruments remeasured and carried at fair value were as follows:

	June 30, 2019		Level 1		Level 2		Level 3
Contingent consideration	$	4,400	$	—	$	—	$	4,400
Total liabilities	$	4,400	$	—	$	—	$	4,400

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Inventories (Tables)

6 Months Ended

Jun. 30, 2019

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories

Sand inventories consisted of the following:

	June 30, 2019		December 31, 2018
Raw material	$	628	$	1,201
Work in progress	6,067		10,070
Finished goods	4,769		4,648
Spare parts	917		1,356
Total sand inventory	$	12,381	$	17,275

SmartSystems inventory represents work in progress inventory related to existing arrangements at the time the Company acquired Quickthree and consisted of the following:

	June 30, 2019		December 31, 2018
Work in progress	$	—	$	1,300
Total SmartSystems inventory	$	—	$	1,300
Total inventory	$	12,381	$	18,575

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Property, Plant and Equipment, net (Tables)

6 Months Ended

Jun. 30, 2019

Property, Plant and Equipment [Abstract]

Schedule of net property, plant and equipment

The acquisition cost has been allocated to the Company’s fixed assets as set forth below.

Machinery, equipment and tooling	$	1,478
Plant and building	1,407
Railroad and sidings	9,926
Land improvements	2,738
Total assets acquired	$	15,549

Net property, plant and equipment consisted of:

	June 30, 2019		December 31, 2018
Machinery, equipment and tooling	$	16,080	$	14,858
SmartSystems	9,532		5,286
Vehicles	2,214		1,955
Furniture and fixtures	1,217		1,140
Plant and building	160,413		158,882
Real estate properties	4,855		4,601
Railroad and sidings	27,347		27,347
Land and land improvements	27,421		27,167
Asset retirement obligation	19,770		16,469
Mineral properties	10,075		10,075
Deferred mining costs	1,806		1,806
Construction in progress	25,132		21,619
	305,862		291,205
Less: accumulated depreciation and depletion	54,884		42,809
Total property, plant and equipment, net	$	250,978	$	248,396

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Intangible Assets, net (Tables)

6 Months Ended

Jun. 30, 2019

Intangible Assets, Net (Excluding Goodwill) [Abstract]

Schedule of finite-lived intangible assets

The following table summarizes the Company’s intangible assets as of June 30, 2019 and December 31, 2018:

	Estimated Useful Life (Years)	Gross Carrying Amount at December 31, 2018		Accumulated Amortization		Net Book Value at June 30, 2019
Developed technology	13	$	18,800	$	1,567	$	17,233
Customer relationships	1	270		270		—
		$	19,070	$	1,837	$	17,233

Schedule of future amortization of finite lived intangible assets

The table below reflects the future estimated amortization expense for amortizable intangible assets as of June 30, 2019.

Remainder of 2019	$	723
2020	1,446
2021	1,446
2022	1,446
2023	1,446
Thereafter	10,726
Total	$	17,233

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(Tables)

6 Months Ended

Jun. 30, 2019

Payables and Accruals [Abstract]

Schedule of Accrued and Other Expenses

Accrued and Other Expenses

Accrued and other expenses were comprised of the following:

	June 30, 2019		December 31, 2018
Employee related expenses	$	2,993	$	1,894
Accrued construction related expenses	259		948
Accrued professional fees	428		465
Accrued royalties	1,678		1,780
Accrued freight and delivery charges	1,976		2,556
Accrued real estate tax	403		—
Accrued utilities	537		—
Accrued income taxes	634		—
Deferred rent	—		712
Other accrued liabilities	1,329		37
Total accrued liabilities	$	10,237	$	8,392

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Debt (Tables)

6 Months Ended

Jun. 30, 2019

Debt Disclosure [Abstract]

Schedule of long-term debt

The current portion of long-term debt consists of the following:

	June 30, 2019		December 31, 2018
Credit Facility	$	38,255	$	—
Finance leases	137		90
Notes payable	1,846		739
Total current portion of long-term debt	$	40,238	$	829

Long-term debt, net of current portion consists of the following:

	June 30, 2019		December 31, 2018
Credit Facility	$	—	$	44,255
Finance leases	498		547
Notes payable	5,898		3,091
Total long-term debt, net of current portion	$	6,396	$	47,893

Credit Facility Detail

As of June 30, 2019 and December 31, 2018, gross deferred financing fees of $1,558 and $728 are presented as a discount to the carrying value of the debt and the unamortized amount is presented as a reduction of current portion of long term debt as of June 30, 2019 and long-term debt, net of current portion, as of December 31, 2018 on the consolidated balance sheets. Certain deferred financing costs incurred when there was no balance on the Credit Facility are included in Other assets line item on the consolidated balance sheet. Accretion of debt discount of $186 and $60 is included in interest expense for the three months ended June 30, 2019 and 2018, respectively. Accretion of debt discount of $331 and $116 is included in interest expense for the six months ended June 30, 2019 and 2018, respectively. Amortization expense of the deferred financing charges of $55 and $78 is included in interest expense for the three months ended June 30, 2019 and 2018, respectively. Amortization expense of the deferred financing charges of $117 and $138 is included in interest expense for the six months ended June 30, 2019 and 2018, respectively.

	June 30, 2019			December 31, 2018
Revolving credit facility	$	39,000		$	44,500
Less: Debt discount, net	(745		)	(245		)
Revolving credit facility, net	$	38,255		$	44,255

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Leases (Tables)

6 Months Ended

Jun. 30, 2019

Leases [Abstract]

Assets And Liabilities, Lessee

At June 30, 2019, the operating and financing components of the Company’s right-of-use assets and lease liabilities on the consolidated balance sheet are as follows:

	Balance Sheet Location	June 30, 2019
Right-of-use assets
Operating	Operating right-of-use assets	$	32,417
Financing	Property, plant and equipment, net	659
Total right-of use assets		$	33,076
Lease liabilities
Operating	Operating lease liabilities, current and long-term portions	$	33,041
Financing	Long-term debt, current and long-term portions	615
Total lease liabilities		$	33,656

Lease, Cost

Other information related to the Company’s leasing activity for the six months ended June 30, 2019 is as follows:

	Six Months Ended
	June 30, 2019
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows used for finance leases	$	20
Operating cash flows used for operating leases	$	7,288
Financing cash flows used for finance leases	$	58
Right-of-use assets obtained in exchange for new finance lease liabilities	$	55
Right-of-use assets recorded upon adoption	$	35,939
Right-of-use assets obtained in exchange for new operating lease liabilities	$	4,100
Weighted average remaining lease term - finance leases	4.0 years
Weighted average discount rate - finance leases	6.69		%
Weighted average remaining lease term - operating leases	2.9 years
Weighted average discount rate - operating leases	5.50		%

Lease cost recognized in the consolidated income statement for the three and six months ended June 30, 2019 is as follows:

	Three Months Ended		Six Months Ended
	June 30, 2019		June 30, 2019
Finance lease cost
Amortization of right-of-use assets	$	34	$	64
Interest on lease liabilities	11		22
Operating lease cost	4,257		7,364
Short-term lease cost	120		134
Total lease cost	$	4,422	$	7,584

Finance Lease, Liability, Maturity

Maturities of the Company’s lease liabilities as of June 30, 2019 are as follows:

Year	Operating Leases			Finance Leases			Total
Remainder of 2019	$	7,864		$	116		$	7,980
2020	12,762			165			12,927
2021	8,847			165			9,012
2022	3,979			151			4,130
2023	1,394			103			1,497
Thereafter	888			—			888
Total cash lease payments	35,734			700			36,434
Less: amounts representing interest	(2,693		)	(85		)	(2,778		)
Total lease liabilities	$	33,041		$	615		$	33,656

Lessee, Operating Lease, Liability, Maturity

Maturities of the Company’s lease liabilities as of June 30, 2019 are as follows:

Year	Operating Leases			Finance Leases			Total
Remainder of 2019	$	7,864		$	116		$	7,980
2020	12,762			165			12,927
2021	8,847			165			9,012
2022	3,979			151			4,130
2023	1,394			103			1,497
Thereafter	888			—			888
Total cash lease payments	35,734			700			36,434
Less: amounts representing interest	(2,693		)	(85		)	(2,778		)
Total lease liabilities	$	33,041		$	615		$	33,656

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Asset Retirement Obligation (Tables)

6 Months Ended

Jun. 30, 2019

Asset Retirement Obligation Disclosure [Abstract]

Reconciliation of total reclamation liability for asset retirement obligations

The following is a reconciliation of the total reclamation liability for asset retirement obligations.

Balance at December 31, 2018	$	13,322
Additions and revisions of prior estimates	3,301
Accretion expense	445
Settlement of liability	(1,883		)
Balance at June 30, 2019	$	15,185

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Revenue (Tables)

6 Months Ended

Jun. 30, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of revenue

Disaggregation of Revenue

The following table presents the Company’s revenues disaggregated by type and percentage of total revenues for the periods indicated.

	Three Months Ended June 30,								Six Months Ended June 30,
	2019				2018				2019				2018
	Revenue		Percentage of Total Revenue		Revenue		Percentage of Total Revenue		Revenue		Percentage of Total Revenue		Revenue		Percentage of Total Revenue
Sand sales revenue	$	26,862	39	%	$	34,626	64	%	$	48,008	40	%	$	56,913	58	%
Reservation revenue	4,500		7	%	5,838		11	%	9,000		8	%	12,466		13	%
Shortfall revenue	16,283		24	%	668		1	%	22,039		18	%	668		1	%
Logistics revenue	20,296		30	%	13,316		24	%	40,669		34	%	27,029		28	%
Total revenues	$	67,941	100	%	$	54,448	100	%	$	119,716	100	%	$	97,076	100	%

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Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Schedule of Earnings Per Share

The following table reconciles the weighted-average common shares outstanding used in the calculation of basic net income per share to the weighted average common shares outstanding used in the calculation of diluted net income per share.

	Three Months Ended June 30,		Six Months Ended June 30,
	2019	2018	2019	2018
Weighted average common shares outstanding	40,074	40,499	40,035	40,455
Assumed conversion of restricted stock	99	51	82	95
Diluted weighted average common stock outstanding	40,173	40,550	40,117	40,550

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Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2019

Share-based Payment Arrangement [Abstract]

Unrecognized compensation expense is expected to be recognized

At June 30, 2019, the Company had unrecognized compensation expense of $4,981 related to granted but unvested stock awards, which is to be recognized as follows:

Remainder of 2019	$	1,304
2020	2,075
2021	1,040
2022	461
2023	101
Total	$	4,981

Summary of restricted stock activity

The following table summarizes restricted stock activity under the Plans from December 31, 2018 through June 30, 2019:

	Number of Shares		Weighted Average
Unvested, December 31, 2018	1,027		$	9.83
Granted	335		$	2.54
Vested	(256	)	$	7.30
Forfeited	(18	)	$	6.38
Unvested, June 30, 2019	1,088		$	9.31

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Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2019

Commitments and Contingencies Disclosure [Abstract]

Commitments Disclosure

Future minimum annual commitments under such contracts at June 30, 2019 are as follows:

Remainder of 2019	$	208
2020	2,275
2021	2,275
2022	2,275
2023	2,275
Thereafter	31,850
Total	$	41,158

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Organization and Nature of Business (Detail) T in Millions	May 31, 2018 T
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Processing capacity	5.5

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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Finance lease, right-of-use asset	$ 659
Operating lease liabilities, current and long-term portions	$ 33,041
Accounting Standards Update 2016-02
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Finance lease, right-of-use asset		$ 35,939
Operating lease liabilities, current and long-term portions		$ 36,484

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Acquisitions - Van Hook Crude Acquisition Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Mar. 15, 2018
Business Acquisition [Line Items]
Total assets acquired	$ 305,862	$ 291,205	$ 15,549
Machinery, equipment and tooling
Business Acquisition [Line Items]
Total assets acquired	16,080	14,858	1,478
Plant and buildings
Business Acquisition [Line Items]
Total assets acquired	160,413	158,882	1,407
Railroad and sidings
Business Acquisition [Line Items]
Total assets acquired	$ 27,347	$ 27,347	9,926
Land improvements
Business Acquisition [Line Items]
Total assets acquired			$ 2,738

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Acquisitions - Quickthree Solutions, Inc. (Details) - USD ($)			3 Months Ended		6 Months Ended
	Jun. 01, 2018	Mar. 15, 2018	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Business Acquisition [Line Items]
Acquisition costs			$ 0	$ 843,000	$ 0	$ 1,159,000
Payments to acquire assets		$ 15,549,000
Quickthree Solutions
Business Acquisition [Line Items]
Purchase agreement amount	$ 30,000,000
Consideration transferred, adjustment	$ 12,750,000
Adjustment period	3 years

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Acquisitions - Schedule of Consideration Transferred (Details) $ in Thousands		3 Months Ended	6 Months Ended
	Jun. 01, 2018 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($) manufactured_units	Dec. 31, 2018 USD ($)
Business Acquisition [Line Items]
Contingent consideration – earnout		$ 4,400	$ 4,400	$ 7,167
Fair value adjustment		575	1,542
Contingent consideration		$ 4,400	$ 4,400
Quickthree Solutions
Business Acquisition [Line Items]
Base price - cash	$ 30,000
Contingent consideration – earnout	9,200
Working capital adjustment	(122)
Total purchase consideration	39,078
Contingent consideration	$ 9,200
Minimum | Quickthree Solutions
Business Acquisition [Line Items]
Units Used In Calculation | manufactured_units			9
Maximum | Quickthree Solutions
Business Acquisition [Line Items]
Units Used In Calculation | manufactured_units			52

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Acquisitions - Schedule of Assets Acquired and Liabilities Assumed (Details) - Quickthree Solutions $ in Thousands	Jun. 01, 2018 USD ($)
Assets Acquired
Accounts receivable	$ 112
Inventory	1,700
Prepaid expenses and other current assets	126
Total current assets acquired	1,938
Property, plant and equipment	740
Goodwill	16,935
Other assets	225
Total non-current assets acquired	37,870
Total assets acquired	39,808
Liabilities Assumed
Accounts payable	331
Accrued and other expenses	399
Total liabilities assumed	730
Estimated fair value of net assets acquired	39,078
Trade name
Assets Acquired
Trade name	900
Customer relationships
Assets Acquired
Intangibles	$ 270
Liabilities Assumed
Useful Life (in years)	1 year
Developed technology
Assets Acquired
Intangibles	$ 18,800
Liabilities Assumed
Useful Life (in years)	13 years

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Acquisitions Fair Value of Financial Instruments Carried at Fair Value (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	$ 4,400
Total liabilities	4,400
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	0
Total liabilities	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	0
Total liabilities	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	4,400
Total liabilities	$ 4,400

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Acquisitions Fair Value Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value adjustment	$ (575)	$ (1,542)
Quickthree Technology LLC | Contingent Consideration
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance as of January 1, 2018		7,167
Payment of contingent consideration		(1,225)
Balance as of September 30, 2018	$ 4,400	$ 4,400

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Inventories - Schedule of Inventories (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Inventory [Line Items]
Total inventory	$ 12,381	$ 18,575
Sand
Inventory [Line Items]
Raw material	628	1,201
Work in progress	6,067	10,070
Finished goods	4,769	4,648
Spare parts	917	1,356
Total inventory	$ 12,381	$ 17,275

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Inventories - Schedule of Wellsite Storage Solutions inventory (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Inventory [Line Items]
Total inventory	$ 12,381	$ 18,575
Wellsite storage solutions
Inventory [Line Items]
Work in progress	0	1,300
Total inventory	$ 0	$ 1,300

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Property, Plant and Equipment, Net - Schedule of Net Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Mar. 15, 2018
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 305,862	$ 291,205	$ 15,549
Less: accumulated depreciation and depletion	54,884	42,809
Total property, plant and equipment, net	250,978	248,396
Machinery, equipment and tooling
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	16,080	14,858	1,478
SmartSystems
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	9,532	5,286
Vehicles
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,214	1,955
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,217	1,140
Plant and building
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	160,413	158,882	1,407
Real estate properties
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	4,855	4,601
Railroad and sidings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	27,347	27,347	$ 9,926
Land and land improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	27,421	27,167
Asset retirement obligation
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	19,770	16,469
Mineral properties
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	10,075	10,075
Deferred mining costs
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,806	1,806
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 25,132	$ 21,619

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Property, Plant and Equipment, Net - Narrative (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Property, Plant and Equipment [Line Items]
Depreciation expenses	$ 6,171,000	$ 3,994,000	$ 12,038,000	$ 7,151,000
Depletion expense	$ 13,000	18,000	18,000	20,000
Interest expense capitalized			$ 0
Construction in progress
Property, Plant and Equipment [Line Items]
Interest expense capitalized		$ 0		$ 0

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Intangible Assets, net - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life (Years)	11 years 11 months
Accumulated Amortization	$ 1,837
Net Book Value at June 30, 2019	17,233
Gross Carrying Amount at December 31, 2018		$ 19,070
Net Book Value at June 30, 2019	$ 17,233	18,068
Developed technology
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life (Years)	13 years
Gross Carrying Amount at December 31, 2018		18,800
Accumulated Amortization	$ 1,567
Net Book Value at June 30, 2019	$ 17,233
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life (Years)	1 year
Gross Carrying Amount at December 31, 2018		$ 270
Accumulated Amortization	$ 270
Net Book Value at June 30, 2019	$ 0

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Intangible Assets, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Estimated Useful Life (Years)			11 years 11 months
Amortization of intangible assets	$ 407	$ 284	$ 837	$ 284

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Intangible Assets, Net - Schedule of future amortization expense of intangible assets (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Remainder of 2019	$ 723
2020	1,446
2021	1,446
2022	1,446
2023	1,446
Thereafter	10,726
Total	$ 17,233

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(Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Payables and Accruals [Abstract]
Employee related expenses	$ 2,993	$ 1,894
Accrued construction related expenses	259	948
Accrued professional fees	428	465
Accrued royalties	1,678	1,780
Accrued freight and delivery charges	1,976	2,556
Accrued real estate tax	403	0
Accrued utilities	537	0
Accrued income taxes	634	0
Deferred rent	0	712
Other accrued liabilities	1,329	37
Total accrued liabilities	$ 10,237	$ 8,392

XML

Credit Facility - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Line of Credit Facility [Line Items]
Debt fee	$ 1,558		$ 1,558		$ 728
Accretion of debt discount	186	$ 60	331	$ 116
Amortization of deferred financing cost	55	$ 78	117	$ 138
Senior Secured Revolving Credit Facility
Line of Credit Facility [Line Items]
Revolving credit facility	55,000		55,000
Undrawn availability	16,000		16,000
Credit Facility | Senior Secured Revolving Credit Facility
Line of Credit Facility [Line Items]
Long-term line of credit	$ 39,000		$ 39,000		$ 44,500

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Debt Long-Term Debt, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Line of Credit Facility [Line Items]
Current portion of long-term debt	$ 40,238	$ 829
Long-term debt, net of current portion	6,396	47,893
Credit Facility
Line of Credit Facility [Line Items]
Revolving credit facility, net	38,255	0
Revolving credit facility, net	38,255	0
Credit Facility | Senior Secured Revolving Credit Facility
Line of Credit Facility [Line Items]
Revolving credit facility, net	38,255	44,255
Revolving credit facility	39,000	44,500
Less: Debt discount, net	(745)	(245)
Revolving credit facility, net	38,255	44,255
Finance leases
Line of Credit Facility [Line Items]
Current portion of long-term debt	137	90
Long-term debt, net of current portion	498	547
Notes payable
Line of Credit Facility [Line Items]
Current portion of long-term debt	1,846	739
Long-term debt, net of current portion	5,898	3,091
Credit Facility
Line of Credit Facility [Line Items]
Long-term debt, net of current portion	$ 0	$ 44,255

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Leases (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Leases [Abstract]
Operating right-of-use assets	$ 32,417	$ 0
Property, plant and equipment, net	659
Total right-of use assets	33,076
Operating lease liabilities, current and long-term portions	33,041
Long-term debt, current and long-term portions	615
Total lease liabilities	$ 33,656

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Leases Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Leases [Abstract]
Amortization of right-of-use assets	$ 34	$ 64
Interest on lease liabilities	11	22
Operating lease cost	4,257	7,364
Short-term lease cost	120	134
Total lease cost	$ 4,422	$ 7,584

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Leases Other Lease (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Operating cash flows used for finance leases	$ 20
Operating cash flows used for operating leases	7,288
Financing cash flows used for finance leases	58
Right-of-use assets obtained in exchange for new finance lease liabilities	55
Finance lease, right-of-use asset	659
Right-of-use assets recorded upon adoption	$ 4,100
Weighted average remaining lease term - finance leases	4 years
Weighted average discount rate - finance leases	6.69%
Weighted average remaining lease term - operating leases	2 years 11 months
Weighted average discount rate - operating leases	5.50%
Accounting Standards Update 2016-02
Lessee, Lease, Description [Line Items]
Finance lease, right-of-use asset		$ 35,939

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Leases Lease Maturities (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Operating Leases
Remainder of 2019	$ 7,864
2020	12,762
2021	8,847
2022	3,979
2023	1,394
Thereafter	888
Total cash lease payments	35,734
Less: amounts representing interest	(2,693)
Operating lease liabilities, current and long-term portions	33,041
Finance Leases
Remainder of 2019	116
2020	165
2021	165
2022	151
2023	103
Thereafter	0
Total cash lease payments	700
Less: amounts representing interest	(85)
Long-term debt, current and long-term portions	615
Total
Remainder of 2019	7,980
2020	12,927
2021	9,012
2022	4,130
2023	1,497
Thereafter	888
Total cash lease payments	36,434
Less: amounts representing interest	2,778
Total lease liabilities	$ 33,656

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Leases Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Lease expense	$ 3,363	$ 6,693
Equipment
Lessee, Lease, Description [Line Items]
Assets under equipment leases, gross			$ 657
Leased assets, depreciation expense	$ 54	$ 109

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Asset Retirement Obligation - Additional Information (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Asset Retirement Obligation Disclosure [Abstract]
Post-closure reclamation and site restoration obligation	$ 15,185	$ 13,322

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Asset Retirement Obligation - Reconciliation of Total Reclamation Liability for Asset Retirement Obligations (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2019 USD ($)
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
December 31, 2018	$ 13,322
Additions and revisions of prior estimates	3,301
Accretion expense	445
Settlement of liability	(1,883)
June 30, 2019	$ 15,185

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Revenue Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Revenue	$ 67,941	$ 54,448	$ 119,716	$ 97,076
Sand sales revenue
Disaggregation of Revenue [Line Items]
Revenue	26,862	34,626	48,008	56,913
Reservation Revenue
Disaggregation of Revenue [Line Items]
Revenue	4,500	5,838	9,000	12,466
Shortfall Revenue
Disaggregation of Revenue [Line Items]
Revenue	16,283	668	22,039	668
Logistics revenue
Disaggregation of Revenue [Line Items]
Revenue	$ 20,296	$ 13,316	$ 40,669	$ 27,029
Product Concentration Risk | Percentage of Total Revenue
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	100.00%	100.00%	100.00%	100.00%
Product Concentration Risk | Percentage of Total Revenue | Sand sales revenue
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	39.00%	64.00%	40.00%	58.00%
Product Concentration Risk | Percentage of Total Revenue | Reservation Revenue
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	7.00%	11.00%	8.00%	13.00%
Product Concentration Risk | Percentage of Total Revenue | Shortfall Revenue
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	24.00%	1.00%	18.00%	1.00%
Product Concentration Risk | Percentage of Total Revenue | Logistics revenue
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	30.00%	24.00%	34.00%	28.00%

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Revenue Deferred Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Revenue Recognition and Deferred Revenue [Abstract]
Deferred revenue	$ 3,401	$ 4,095
Deferred Revenue, Revenue Recognized	1,017
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period 1	$ 578

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Revenue Reportable Segments (Details)	6 Months Ended
	Jun. 30, 2019 segment
Revenue from Contract with Customer [Abstract]
Number of Reportable Segments	1

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Earnings Per Share Anti-dilutive Awards Excluded from Calculation (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	765	670	765	670

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Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Basic (in shares)	40,074	40,499	40,035	40,455
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	99	51	82	95
Weighted Average Number of Shares Outstanding, Diluted	40,173	40,550	40,117	40,550

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Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Nov. 30, 2016	Dec. 31, 2014	May 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock based compensation expense	$ 4,981		$ 4,981
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock shares issued (in shares)			335,000
Grant date fair value per share (in dollars per share)			$ 2.54
2012 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock shares authorized for issuance (in shares)						880,000	440,000
2012 Equity Incentive Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock shares issued (in shares)			335,000	723,000
Stock compensation expense recognized	$ 754	$ 670	$ 1,544	$ 1,260
2012 Equity Incentive Plan | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period			5 years
Percent of voting power			10.00%
Shares vest over period			1 year
2012 Equity Incentive Plan | Minimum | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value per share (in dollars per share)			$ 2.44
2012 Equity Incentive Plan | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period			10 years
2012 Equity Incentive Plan | Maximum | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value per share (in dollars per share)			$ 19.00
Shares vest over period			4 years
2016 Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock shares authorized for issuance (in shares)					3,911,000
2016 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase interval period			6 months
Percentage of purchase price to fair market value			85.00%
Percentage of purchase limit on gross compensation	20.00%		20.00%

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Stock-Based Compensation - Unrecognized Compensation Expense is to be Recognized (Detail) $ in Thousands	Jun. 30, 2019 USD ($)
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Unrecognized stock based compensation expense	$ 4,981
Remainder of 2019
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Unrecognized stock based compensation expense	1,304
2020
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Unrecognized stock based compensation expense	2,075
2021
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Unrecognized stock based compensation expense	1,040
2022
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Unrecognized stock based compensation expense	461
2023
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Unrecognized stock based compensation expense	$ 101

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Stock-Based Compensation - Summary of Restricted Stock Activity (Detail) - Restricted Stock shares in Thousands	6 Months Ended
	Jun. 30, 2019 $ / shares shares
Number of Shares
Unvested, December 31, 2017 (in shares) | shares	1,027
Granted (in shares) | shares	335
Vested (in shares) | shares	(256)
Forfeited (in shares) | shares	(18)
Unvested, September 30, 2018 (in shares) | shares	1,088
Weighted Average
Unvested, December 31, 2017 (in dollars per share) | $ / shares	$ 9.83
Granted (in dollars per share) | $ / shares	2.54
Vested (in dollars per share) | $ / shares	7.30
Forfeited (in dollars per share) | $ / shares	6.38
Unvested, September 30, 2018 (in dollars per share) | $ / shares	$ 9.31

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Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Statutory tax rate	21.80%	19.40%	21.30%	19.40%
Liability for uncertain tax position	$ 0		$ 0		$ 0

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Concentrations - Additional Information (Detail)			3 Months Ended		6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Accounts Receivable | Customer Concentration Risk | Three Customers
Concentration Risk [Line Items]
Concentration risk, percentage	89.00%
Accounts Receivable | Customer Concentration Risk | Four Customers
Concentration Risk [Line Items]
Concentration risk, percentage		89.00%
Revenue | Customer Concentration Risk | Three Customers
Concentration Risk [Line Items]
Concentration risk, percentage			62.00%		60.00%
Revenue | Customer Concentration Risk | Four Customers
Concentration Risk [Line Items]
Concentration risk, percentage				64.00%		65.00%
Accounts Payables | Supplier Concentration Risk | Three Vendors
Concentration Risk [Line Items]
Concentration risk, percentage	37.00%
Accounts Payables | Supplier Concentration Risk | One Vendor
Concentration Risk [Line Items]
Concentration risk, percentage		16.00%
Cost of Goods Sold | Supplier Concentration Risk | Two Supplier
Concentration Risk [Line Items]
Concentration risk, percentage			53.00%
Cost of Goods Sold | Supplier Concentration Risk | Three Suppliers
Concentration Risk [Line Items]
Concentration risk, percentage					64.00%
Cost of Goods Sold | Supplier Concentration Risk | One Supplier
Concentration Risk [Line Items]
Concentration risk, percentage				31.00%		34.00%

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Commitments and Contingencies - Schedule of Future Minimum Annual Commitments Under Non-Lease Contracts (Detail) $ in Thousands	Jun. 30, 2019 USD ($)
Commitments and Contingencies Disclosure [Abstract]
2019	$ 208
non-lease future commitment yr2	2,275
non-lease future commitment yr3	2,275
non-lease future commitment yr4	2,275
non-lease future commitment yr5	2,275
non-lease future commitment after 5	31,850
non-lease future commitment total	$ 41,158

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Commitments and Contingencies Litigation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 67,941	$ 54,448	$ 119,716	$ 97,076
Accounts receivable, net	45,652		45,652		$ 18,989
Pending Litigation [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	17,573		24,252
Accounts receivable, net	$ 34,564		$ 34,564