Smart Sand (SND) 10-Q 5 Nov 19 2019 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2019	Oct. 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	Sep. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
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		41,318,370

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 2,098	$ 1,466
Accounts receivable, net	58,749	18,989
Unbilled receivables	1,189	7,823
Inventories	15,926	18,575
Prepaid expenses and other current assets	1,092	3,243
Total current assets	79,054	50,096
Property, plant and equipment, net	250,486	248,396
Operating lease right-of-use assets	29,702	0
Intangible assets, net	9,244	18,068
Other assets	3,537	3,732
Total assets	372,023	320,292
Current liabilities:
Accounts payable	10,039	11,336
Accrued and other expenses	10,234	8,392
Deferred revenue	5,545	4,095
Current portion of long-term debt	23,940	829
Operating lease liabilities, current portion	11,799	0
Total current liabilities	61,557	24,652
Deferred revenue, net of current portion	2,946	0
Long-term debt, net of current portion	6,791	47,893
Operating lease liabilities, long-term, net of current portion	17,397	0
Long-term deferred tax liabilities, net	24,685	17,898
Asset retirement obligation	14,897	13,322
Contingent consideration	2,800	7,167
Total liabilities	131,073	110,932
Commitments and contingencies (Note 16)
Stockholders’ equity
Common stock, $0.001 par value, 350,000,000 shares authorized; 40,974,470 issued and 40,233,850 outstanding at September 30, 2019; 40,673,513 issued and 39,974,478 outstanding at December 31, 2018	40	40
Treasury stock, at cost, 740,620 and 699,035 shares at September 30, 2019 and December 31, 2018, respectively	(2,978)	(2,839)
Additional paid-in capital	164,499	162,195
Retained earnings	79,512	50,277
Accumulated other comprehensive loss	(123)	(313)
Total stockholders’ equity	240,950	209,360
Total liabilities and stockholders’ equity	$ 372,023	$ 320,292

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Sep. 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)	40,974,470	40,673,513
Common stock, shares outstanding (in shares)	40,233,850	39,974,478
Treasury stock, shares (in shares)	740,620	699,035

CONDENSED CONSOLIDATED INCOME S

CONDENSED CONSOLIDATED INCOME STATEMENTS (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Revenues	$ 65,690	$ 63,146	$ 185,406	$ 160,222
Cost of goods sold	38,555	40,595	122,228	110,686
Gross profit	27,135	22,551	63,178	49,536
Operating expenses:
Salaries, benefits and payroll taxes	2,958	3,232	8,466	8,595
Depreciation and amortization	623	501	1,954	1,165
Selling, general and administrative	2,693	3,512	8,283	10,208
Change in the estimated fair value of contingent consideration	(1,215)	(2,100)	(2,757)	(2,100)
Impairment of intangible asset	7,628	0	7,628	0
Total operating expenses	12,687	5,145	23,574	17,868
Operating income	14,448	17,406	39,604	31,668
Other income (expenses):
Interest expense, net	(968)	(758)	(2,943)	(1,438)
Other income	15	90	89	149
Total other income (expenses), net	(953)	(668)	(2,854)	(1,289)
Income before income tax expense	13,495	16,738	36,750	30,379
Income tax expense	2,569	4,613	7,515	7,258
Net income	$ 10,926	$ 12,125	$ 29,235	$ 23,121
Net income per common share:
Basic (in dollars per share)	$ 0.27	$ 0.30	$ 0.73	$ 0.57
Diluted (in dollars per share)	$ 0.27	$ 0.30	$ 0.73	$ 0.57
Weighted-average number of common shares:
Basic (in shares)	40,233	40,541	40,102	40,483
Diluted (in shares)	40,240	40,551	40,163	40,548

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 10,926	$ 12,125	$ 29,235	$ 23,121
Other comprehensive income:
Foreign currency translation adjustment	(46)	(130)	190	(54)
Comprehensive income	$ 10,880	$ 11,995	$ 29,425	$ 23,067

CONDENSED CONSOLIDATED STATEM_2

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	(54)
Net income	23,121
Ending balance (in shares) at Sep. 30, 2018		40,550,353	110,835
Ending balance at Sep. 30, 2018	215,231	$ 40	$ (840)	161,375	54,710	(54)
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
Increase (Decrease) in Stockholders' Equity
Foreign currency translation adjustment	(130)					(130)
Vesting of restricted stock (in shares)		21,351
Stock-based compensation	873			873
Employee stock purchase plan compensation	18			18
Employee stock purchase plan issuance (in shares)		0
Employee stock purchase plan issuance	56			56
Restricted stock buy back (in shares)		(180)	180
Restricted stock buy back	(1)		$ (1)
Net income	12,125				12,125
Ending balance (in shares) at Sep. 30, 2018		40,550,353	110,835
Ending balance at Sep. 30, 2018	215,231	$ 40	$ (840)	161,375	54,710	(54)
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	190
Net income	29,235
Ending balance (in shares) at Sep. 30, 2019		40,233,850	740,620
Ending balance at Sep. 30, 2019	240,950	$ 40	$ (2,978)	164,499	79,512	(123)
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)
Increase (Decrease) in Stockholders' Equity
Foreign currency translation adjustment	(46)					(46)
Vesting of restricted stock (in shares)		4,500
Stock-based compensation	652			652
Employee stock purchase plan compensation	12			12
Employee stock purchase plan issuance (in shares)		20,121
Employee stock purchase plan issuance	38			38
Restricted stock buy back (in shares)		(180)	180
Restricted stock buy back	0
Net income	10,926				10,926
Ending balance (in shares) at Sep. 30, 2019		40,233,850	740,620
Ending balance at Sep. 30, 2019	$ 240,950	$ 40	$ (2,978)	$ 164,499	$ 79,512	$ (123)

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Operating activities:
Net income	$ 29,235	$ 23,121
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and accretion of asset retirement obligation	19,309	12,141
Impairment of intangible asset	7,628	0
Amortization of intangible assets	1,199	572
Asset retirement obligation settlement	(2,348)	(2,219)
(Gain) loss on disposal of assets	(41)	253
Amortization of deferred financing cost	172	223
Accretion of debt discount	517	181
Deferred income taxes	6,787	7,258
Stock-based compensation, net	2,196	2,133
Employee stock purchase plan compensation	30	56
Change in contingent consideration fair value	(2,757)	(2,100)
Changes in assets and liabilities, net of effects of acquisitions:
Accounts receivable	(39,760)	(6,386)
Unbilled receivables	6,634	(23)
Inventories	2,649	(5,170)
Prepaid expenses and other assets	1,035	(3,087)
Deferred revenue	4,396	4,030
Accounts payable	(956)	(2,517)
Accrued and other expenses	4,403	5,257
Net cash provided by operating activities	40,328	33,723
Investing activities:
Acquisition of businesses, net of cash acquired	0	(29,921)
Purchases of property, plant and equipment	(19,518)	(81,654)
Proceeds from disposal of assets	0	22
Net cash used in investing activities	(19,518)	(111,553)
Financing activities:
Proceeds from the issuance of notes payable	6,120	0
Repayments of notes payable	(1,461)	(288)
Payments under equipment financing obligations	(79)	(166)
Payment of deferred financing and debt issuance costs	(1,087)	(210)
Proceeds from revolving credit facility	37,750	71,500
Repayment of revolving credit facility	(59,750)	(27,000)
Payment of contingent consideration	(1,610)	0
Proceeds from equity issuance	78	127
Purchase of treasury stock	(139)	(174)
Net cash (used in) provided by financing activities	(20,178)	43,789
Effect of exchange rate changes on cash and cash equivalents	0	0
Net decrease in cash and cash equivalents	632	(34,041)
Cash and cash equivalents at beginning of year	1,466	35,227
Cash and cash equivalents at end of period	2,098	1,186
Non-cash investing activities:
Contingent consideration	0	9,200
Asset retirement obligation	3,301	1,561
Non-cash financing activities:
Write-off of remaining balance of returned equipment under capital lease	0	398
Capitalized expenditures in accounts payable and accrued expenses	$ 2,138	$ 7,920

Organization and Nature of Busi

Organization and Nature of Business	9 Months Ended
	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Nature of Business	Organization and Nature of Business The Company was incorporated in July 2011 and is headquartered in The Woodlands, Texas. The Company 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. These systems now comprise the Company’s 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.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 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 September 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 does not expect ASU 2018-13 to have a material effect 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 SmartSystems and 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.

Acquisitions

Acquisitions	9 Months Ended
	Sep. 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, which now comprise 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 nine months ended September 30, 2019 . Total acquisition costs for the Quickthree acquisition incurred during the three and nine months ended September 30, 2018 were $0 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. The Company impaired $8,500 of gross intangible assets related to developed technology acquired in the Quickthree acquisition. See Note 6 - Intangible Assets for additional information. 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. The Company recorded adjustments to the fair value of contingent consideration in the amount of $1,215 and $2,757 for the three and nine months ended September 30, 2019 , respectively, and $2,100 for each the three and nine months ended September 30, 2018, on the condensed consolidated income statements. 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 10 and 37 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: September 30, 2019 Level 1 Level 2 Level 3 Contingent consideration $ 2,800 $ — $ — $ 2,800 Total liabilities $ 2,800 $ — $ — $ 2,800 The following table provides a summary of changes in the fair value of the Company’s Level 3 financial instruments for the nine months ended September 30, 2019 . Balance as of December 31, 2018 $ 7,167 Payment of contingent consideration (1,610 ) Fair value adjustment (2,757 ) Balance as of September 30, 2019 $ 2,800

Inventories

Inventories	9 Months Ended
	Sep. 30, 2019
Inventory Disclosure [Abstract]
Inventories	Inventories Sand inventories consisted of the following: September 30, 2019 December 31, 2018 Raw material $ 391 $ 1,201 Work in progress 10,381 10,070 Finished goods 4,351 4,648 Spare parts 803 1,356 Total sand inventory $ 15,926 $ 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: September 30, 2019 December 31, 2018 Work in progress $ — $ 1,300 Total SmartSystems inventory $ — $ 1,300 Total inventory $ 15,926 $ 18,575

Property, Plant and Equipment,

Property, Plant and Equipment, net	9 Months Ended
	Sep. 30, 2019
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment, net	Property, Plant and Equipment, net Net property, plant and equipment consisted of: September 30, 2019 December 31, 2018 Machinery, equipment and tooling $ 16,863 $ 14,858 SmartSystems 14,123 5,286 Vehicles 2,436 1,955 Furniture and fixtures 1,228 1,140 Plant and building 160,736 158,882 Real estate properties 4,913 4,601 Railroad and sidings 27,347 27,347 Land and land improvements 27,683 27,167 Asset retirement obligation 19,770 16,469 Mineral properties 10,075 10,075 Deferred mining costs 1,883 1,806 Construction in progress 25,022 21,619 312,079 291,205 Less: accumulated depreciation and depletion 61,593 42,809 Total property, plant and equipment, net $ 250,486 $ 248,396 Depreciation expense was $6,610 and $4,608 for the three months ended September 30, 2019 and 2018 , respectively, and $18,648 and $11,751 for the nine months ended September 30, 2019 and 2018 , respectively. Depletion expense was $20 and $31 for the three months ended September 30, 2019 and 2018 , respectively, and $38 and $51 for the nine months ended September 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 nine months ended September 30, 2019 and 2018 .

Intangible Assets, net

Intangible Assets, net	9 Months Ended
	Sep. 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 September 30, 2019 and December 31, 2018 : Estimated Useful Life (Years) Gross Carrying Amount at December 31, 2018 Gross Impairment Accumulated Amortization Net Book Value at September 30, 2019 Developed technology 13 $ 18,800 $ 8,500 $ 1,056 $ 9,244 Customer relationships 1 270 — 270 — $ 19,070 $ 8,500 $ 1,326 $ 9,244 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 11.7 years . Amortization expense related to the purchased intangible assets was $362 and $289 for the three months ended September 30, 2019 and 2018, respectively, and $1,199 and $572 for the nine months ended September 30, 2019 and 2018, respectively. The Company recorded an impairment charge of $7,628 related to specific developed technology allocated to the Quickload for the three months ended September 30, 2019. Amortizable intangible assets are evaluated for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable through the estimated undiscounted future cash flows derived from such assets. The Company is developing and testing a new transload technology and no longer plans to actively market the Quickload system and as such, all developed technology intangible assets related to the Quickload have been impaired as of September 30, 2019. The table below reflects the future estimated amortization expense for amortizable intangible assets as of September 30, 2019 . Remainder of 2019 $ 264 2020 792 2021 792 2022 792 2023 792 Thereafter 5,812 Total $ 9,244

Accrued and Other Expenses

Accrued and Other Expenses	9 Months Ended
	Sep. 30, 2019
Payables and Accruals [Abstract]
Accrued and Other Expenses	Accrued and Other Expenses Accrued and other expenses were comprised of the following: September 30, 2019 December 31, 2018 Employee related expenses $ 4,085 $ 1,894 Accrued construction related expenses 226 948 Accrued professional fees 399 465 Accrued royalties 1,903 1,780 Accrued freight and delivery charges 1,978 2,556 Accrued real estate tax 605 — Accrued utilities 207 — Accrued income taxes 281 — Deferred rent — 712 Other accrued liabilities 550 37 Total accrued liabilities $ 10,234 $ 8,392

Debt

Debt	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Debt	Debt The current portion of long-term debt consists of the following: September 30, 2019 December 31, 2018 Credit Facility $ 21,684 $ — Finance leases 95 90 Notes payable 2,161 739 Total current portion of long-term debt $ 23,940 $ 829 Long-term debt, net of current portion consists of the following: September 30, 2019 December 31, 2018 Credit Facility $ — $ 44,255 Finance leases 503 547 Notes payable 6,288 3,091 Total long-term debt, net of current portion $ 6,791 $ 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 September 30, 2019 and December 31, 2018 , $22,500 and $44,500 , respectively, were outstanding under the Credit Facility and the Company was in compliance with all covenants. As of September 30, 2019 , the total borrowing capacity is $52,500 with undrawn availability at $30,000 . 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 September 30, 2019 . The Company is currently pursuing plans to refinance the Credit Facility and extend the current obligations beyond one year. As of September 30, 2019 and December 31, 2018 , gross deferred financing fees of $1,815 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 September 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 $65 for the three months ended September 30, 2019 and 2018 , respectively, and $517 and $181 for the nine months ended September 30, 2019 and 2018 , respectively, is included in interest expense. Amortization expense of the deferred financing charges of $54 and $85 for the three months ended September 30, 2019 and 2018 , respectively, and $172 and $223 for the nine months ended September 30, 2019 and 2018 , respectively, is included in interest expense. September 30, 2019 December 31, 2018 Revolving credit facility $ 22,500 $ 44,500 Less: Debt discount, net (816 ) (245 ) Revolving credit facility, net $ 21,684 $ 44,255

Leases (Notes)

Leases (Notes)	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Leases	Leases Disclosures subsequent to the adoption of ASC 842 Lessee At September 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 September 30, 2019 Right-of-use assets Operating Operating right-of-use assets $ 29,702 Financing Property, plant and equipment, net 650 Total right-of use assets $ 30,352 Lease liabilities Operating Operating lease liabilities, current and long-term portions $ 29,196 Financing Long-term debt, current and long-term portions 598 Total lease liabilities $ 29,794 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 nine months ended September 30, 2019 is as follows: Three Months Ended Nine Months Ended September 30, 2019 September 30, 2019 Finance lease cost Amortization of right-of-use assets $ 35 $ 99 Interest on lease liabilities 10 32 Operating lease cost 4,105 11,469 Short-term lease cost 160 294 Total lease cost $ 4,310 $ 11,894 Other information related to the Company’s leasing activity for the nine months ended September 30, 2019 is as follows: Nine Months Ended September 30, 2019 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows used for finance leases $ 33 Operating cash flows used for operating leases $ 12,447 Financing cash flows used for finance leases $ 79 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 $ 5,053 Weighted average remaining lease term - finance leases 3.9 years Weighted average discount rate - finance leases 6.60 % Weighted average remaining lease term - operating leases 2.8 years Weighted average discount rate - operating leases 5.50 % Maturities of the Company’s lease liabilities as of September 30, 2019 are as follows: Year Operating Leases Finance Leases Total Remainder of 2019 $ 2,841 $ 32 $ 2,873 2020 13,238 165 13,403 2021 9,123 165 9,288 2022 4,034 151 4,185 2023 1,394 161 1,555 Thereafter 888 — 888 Total cash lease payments 31,518 674 32,192 Less: amounts representing interest (2,322 ) (76 ) (2,398 ) Total lease liabilities $ 29,196 $ 598 $ 29,794 Disclosures prior to the adoption of ASC 842 Capital Leases The Company entered into various lease arrangements to lease equipment. Equipment cost of $657 was capitalized and included in the Company’s property, plant and equipment as of December 31, 2018 . Depreciation expense under leased assets was approximately $3 and $113 for the three and nine months ended September 30, 2018 , respectively. Operating Leases Expense related to operating leases and other rental agreements was $3,965 and $10,658 for three and nine months ended September 30, 2018 , respectively. Lease expense related to railcars is included in cost of goods sold in the condensed consolidated income statements.
Leases	Leases Disclosures subsequent to the adoption of ASC 842 Lessee At September 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 September 30, 2019 Right-of-use assets Operating Operating right-of-use assets $ 29,702 Financing Property, plant and equipment, net 650 Total right-of use assets $ 30,352 Lease liabilities Operating Operating lease liabilities, current and long-term portions $ 29,196 Financing Long-term debt, current and long-term portions 598 Total lease liabilities $ 29,794 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 nine months ended September 30, 2019 is as follows: Three Months Ended Nine Months Ended September 30, 2019 September 30, 2019 Finance lease cost Amortization of right-of-use assets $ 35 $ 99 Interest on lease liabilities 10 32 Operating lease cost 4,105 11,469 Short-term lease cost 160 294 Total lease cost $ 4,310 $ 11,894 Other information related to the Company’s leasing activity for the nine months ended September 30, 2019 is as follows: Nine Months Ended September 30, 2019 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows used for finance leases $ 33 Operating cash flows used for operating leases $ 12,447 Financing cash flows used for finance leases $ 79 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 $ 5,053 Weighted average remaining lease term - finance leases 3.9 years Weighted average discount rate - finance leases 6.60 % Weighted average remaining lease term - operating leases 2.8 years Weighted average discount rate - operating leases 5.50 % Maturities of the Company’s lease liabilities as of September 30, 2019 are as follows: Year Operating Leases Finance Leases Total Remainder of 2019 $ 2,841 $ 32 $ 2,873 2020 13,238 165 13,403 2021 9,123 165 9,288 2022 4,034 151 4,185 2023 1,394 161 1,555 Thereafter 888 — 888 Total cash lease payments 31,518 674 32,192 Less: amounts representing interest (2,322 ) (76 ) (2,398 ) Total lease liabilities $ 29,196 $ 598 $ 29,794 Disclosures prior to the adoption of ASC 842 Capital Leases The Company entered into various lease arrangements to lease equipment. Equipment cost of $657 was capitalized and included in the Company’s property, plant and equipment as of December 31, 2018 . Depreciation expense under leased assets was approximately $3 and $113 for the three and nine months ended September 30, 2018 , respectively. Operating Leases Expense related to operating leases and other rental agreements was $3,965 and $10,658 for three and nine months ended September 30, 2018 , respectively. Lease expense related to railcars is included in cost of goods sold in the condensed consolidated income statements.

Asset Retirement Obligation

Asset Retirement Obligation	9 Months Ended
	Sep. 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 $14,897 as of September 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 623 Settlement of liability (2,348 ) Balance at September 30, 2019 $ 14,897

Revenue Revenue (Notes)

Revenue Revenue (Notes)	9 Months Ended
	Sep. 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 September 30, Nine Months Ended September 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 $ 25,153 38 % $ 39,500 63 % $ 73,161 40 % $ 96,417 60 % Reservation revenue 4,500 7 % 5,190 8 % 13,500 7 % 17,656 11 % Shortfall revenue 15,620 24 % 1,426 2 % 37,659 20 % 2,094 1 % Logistics revenue 20,417 31 % 17,030 27 % 61,086 33 % 44,055 28 % Total revenues $ 65,690 100 % $ 63,146 100 % $ 185,406 100 % $ 160,222 100 % The Company recorded $4,095 of deferred revenue on the balance sheet on December 31, 2018 , of which $1,017 has been recognized in the nine months ended September 30, 2019 , $2,500 was recharacterized due to an amended contract, and the Company expects to recognize an additional $578 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.

Earnings Per Share (Notes)

Earnings Per Share (Notes)	9 Months Ended
	Sep. 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 770 and 1,022 for the three months ended September 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 760 and 646 for the nine months ended September 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 September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Weighted average common shares outstanding 40,233 40,541 40,102 40,483 Assumed conversion of restricted stock 7 10 61 65 Diluted weighted average common stock outstanding 40,240 40,551 40,163 40,548

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 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 nine months ended September 30, 2019 and 2018 , 337 and 742 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 and cost of goods sold on the condensed consolidated income statements, $652 and $873 of compensation expense for the restricted stock during the three months ended September 30, 2019 and 2018 , respectively. The Company recognized, in operating expenses on the consolidated income statements, $2,196 and $2,133 of compensation expense for the restricted stock during the nine months ended September 30, 2019 and 2018 , respectively. At September 30, 2019 , the Company had unrecognized compensation expense of $4,332 related to granted but unvested stock awards, which is to be recognized as follows: Remainder of 2019 $ 652 2020 2,076 2021 1,041 2022 461 2023 102 Total $ 4,332 The following table summarizes restricted stock activity under the Plans from December 31, 2018 through September 30, 2019 : Number of Shares Weighted Average Unvested, December 31, 2018 1,027 $ 9.83 Granted 337 $ 2.54 Vested (261 ) $ 8.77 Forfeited (18 ) $ 6.38 Unvested, September 30, 2019 1,085 $ 9.32 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.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 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 September 30, 2019 and 2018 , the effective tax rate was approximately 19.0% and 27.6% , respectively, based on the annual effective tax rate net of discrete federal and state taxes. For the nine months ended September 30, 2019 and 2018 , the effective tax rate was approximately 20.4% and 23.9% , respectively, based on the annual effective tax rate net of discrete federal and state taxes. For the three and nine months ended September 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 September 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 September 30, 2019 and December 31, 2018 , the Company determined no valuation allowance was necessary. The Company has evaluated its tax positions taken as of September 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 September 30, 2019 or December 31, 2018 . The Company is open to examination by taxing authorities beginning with the 2014 tax year.

Concentrations

Concentrations	9 Months Ended
	Sep. 30, 2019
Risks and Uncertainties [Abstract]
Concentrations	Concentrations As of September 30, 2019 , two customers accounted for 80% 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 September 30, 2019 , 82% of the Company’s revenues were earned from four customers. During the three months ended September 30, 2018 , 82% of the Company’s revenues were earned from five customers. During the nine months ended September 30, 2019 , 74% of the Company’s revenues were earned from four customers. During the nine months ended September 30, 2018 , 55% of the Company’s revenues were earned from three customers. As of September 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 September 30, 2019 , two suppliers accounted for 57% of the Company’s cost of goods sold. During the three months ended September 30, 2018 , three suppliers accounted for 58% of the Company’s cost of goods sold. During the nine months ended September 30, 2019 , two suppliers accounted for 53% of the Company’s cost of goods sold. During the nine months ended September 30, 2018 , two suppliers accounted for 44% 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.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 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 September 30, 2019 are as follows: Remainder of 2019 $ — 2020 2,275 2021 2,275 2022 2,275 2023 2,275 Thereafter 31,850 Total $ 40,950 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. U.S. Well Services, LLC On January 14, 2019, Smart Sand, Inc. (plaintiff) filed suit against U.S. Well Services, LLC (defendant) (“U.S. Well”) 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. The Company recorded $16,343 and $31,893 of revenue for the three and nine months ended September 30, 2019, respectively, related to U.S. Well. As of September 30, 2019 , $35,045 of accounts and unbilled receivables is attributable to U.S. Well. 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) (“STC”) in the District Court of Harris County, Texas (Case No. 2019-00557). In the suit, plaintiff alleged that defendant was in breach of contract for failure to pay amounts due and payable under a long-term take-or-pay Master Product Purchase Agreement and was seeking unspecified monetary damages and other appropriate relief. Defendant filed an Answer, Affirmative Defenses and Counterclaim seeking unspecified monetary damages and declaratory relief. On September 10, 2019, the Company and defendant entered into an agreement to settle such lawsuit and the case has been dismissed with prejudice. The settlement included an upfront cash payment, a new 4-year take-or-pay contract, and amounts recorded as accounts and unbilled receivables and deferred revenue to be removed from the Company’s balance sheet.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
Basis of Presentation and 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 .
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.
Going Concern	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 September 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 does not expect ASU 2018-13 to have a material effect 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 SmartSystems and 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.
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.

Acquisitions (Tables)

Acquisitions (Tables)	9 Months Ended
	Sep. 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: September 30, 2019 December 31, 2018 Machinery, equipment and tooling $ 16,863 $ 14,858 SmartSystems 14,123 5,286 Vehicles 2,436 1,955 Furniture and fixtures 1,228 1,140 Plant and building 160,736 158,882 Real estate properties 4,913 4,601 Railroad and sidings 27,347 27,347 Land and land improvements 27,683 27,167 Asset retirement obligation 19,770 16,469 Mineral properties 10,075 10,075 Deferred mining costs 1,883 1,806 Construction in progress 25,022 21,619 312,079 291,205 Less: accumulated depreciation and depletion 61,593 42,809 Total property, plant and equipment, net $ 250,486 $ 248,396
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 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 contingent consideration	The Company’s financial instruments remeasured and carried at fair value were as follows: September 30, 2019 Level 1 Level 2 Level 3 Contingent consideration $ 2,800 $ — $ — $ 2,800 Total liabilities $ 2,800 $ — $ — $ 2,800 The following table provides a summary of changes in the fair value of the Company’s Level 3 financial instruments for the nine months ended September 30, 2019 . Balance as of December 31, 2018 $ 7,167 Payment of contingent consideration (1,610 ) Fair value adjustment (2,757 ) Balance as of September 30, 2019 $ 2,800

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Sep. 30, 2019
Inventory Disclosure [Abstract]
Schedule of Inventories	Inventories Sand inventories consisted of the following: September 30, 2019 December 31, 2018 Raw material $ 391 $ 1,201 Work in progress 10,381 10,070 Finished goods 4,351 4,648 Spare parts 803 1,356 Total sand inventory $ 15,926 $ 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: September 30, 2019 December 31, 2018 Work in progress $ — $ 1,300 Total SmartSystems inventory $ — $ 1,300 Total inventory $ 15,926 $ 18,575

Property, Plant and Equipment_2

Property, Plant and Equipment, net (Tables)	9 Months Ended
	Sep. 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: September 30, 2019 December 31, 2018 Machinery, equipment and tooling $ 16,863 $ 14,858 SmartSystems 14,123 5,286 Vehicles 2,436 1,955 Furniture and fixtures 1,228 1,140 Plant and building 160,736 158,882 Real estate properties 4,913 4,601 Railroad and sidings 27,347 27,347 Land and land improvements 27,683 27,167 Asset retirement obligation 19,770 16,469 Mineral properties 10,075 10,075 Deferred mining costs 1,883 1,806 Construction in progress 25,022 21,619 312,079 291,205 Less: accumulated depreciation and depletion 61,593 42,809 Total property, plant and equipment, net $ 250,486 $ 248,396

Intangible Assets, net (Tables)

Intangible Assets, net (Tables)	9 Months Ended
	Sep. 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 September 30, 2019 and December 31, 2018 : Estimated Useful Life (Years) Gross Carrying Amount at December 31, 2018 Gross Impairment Accumulated Amortization Net Book Value at September 30, 2019 Developed technology 13 $ 18,800 $ 8,500 $ 1,056 $ 9,244 Customer relationships 1 270 — 270 — $ 19,070 $ 8,500 $ 1,326 $ 9,244
Schedule of future amortization of finite lived intangible assets	The table below reflects the future estimated amortization expense for amortizable intangible assets as of September 30, 2019 . Remainder of 2019 $ 264 2020 792 2021 792 2022 792 2023 792 Thereafter 5,812 Total $ 9,244

(Tables)

(Tables)	9 Months Ended
	Sep. 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: September 30, 2019 December 31, 2018 Employee related expenses $ 4,085 $ 1,894 Accrued construction related expenses 226 948 Accrued professional fees 399 465 Accrued royalties 1,903 1,780 Accrued freight and delivery charges 1,978 2,556 Accrued real estate tax 605 — Accrued utilities 207 — Accrued income taxes 281 — Deferred rent — 712 Other accrued liabilities 550 37 Total accrued liabilities $ 10,234 $ 8,392

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Schedule of long-term debt	The current portion of long-term debt consists of the following: September 30, 2019 December 31, 2018 Credit Facility $ 21,684 $ — Finance leases 95 90 Notes payable 2,161 739 Total current portion of long-term debt $ 23,940 $ 829 Long-term debt, net of current portion consists of the following: September 30, 2019 December 31, 2018 Credit Facility $ — $ 44,255 Finance leases 503 547 Notes payable 6,288 3,091 Total long-term debt, net of current portion $ 6,791 $ 47,893
Credit Facility Detail	As of September 30, 2019 and December 31, 2018 , gross deferred financing fees of $1,815 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 September 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 $65 for the three months ended September 30, 2019 and 2018 , respectively, and $517 and $181 for the nine months ended September 30, 2019 and 2018 , respectively, is included in interest expense. Amortization expense of the deferred financing charges of $54 and $85 for the three months ended September 30, 2019 and 2018 , respectively, and $172 and $223 for the nine months ended September 30, 2019 and 2018 , respectively, is included in interest expense. September 30, 2019 December 31, 2018 Revolving credit facility $ 22,500 $ 44,500 Less: Debt discount, net (816 ) (245 ) Revolving credit facility, net $ 21,684 $ 44,255

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Assets And Liabilities, Lessee	At September 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 September 30, 2019 Right-of-use assets Operating Operating right-of-use assets $ 29,702 Financing Property, plant and equipment, net 650 Total right-of use assets $ 30,352 Lease liabilities Operating Operating lease liabilities, current and long-term portions $ 29,196 Financing Long-term debt, current and long-term portions 598 Total lease liabilities $ 29,794
Lease, Cost	Other information related to the Company’s leasing activity for the nine months ended September 30, 2019 is as follows: Nine Months Ended September 30, 2019 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows used for finance leases $ 33 Operating cash flows used for operating leases $ 12,447 Financing cash flows used for finance leases $ 79 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 $ 5,053 Weighted average remaining lease term - finance leases 3.9 years Weighted average discount rate - finance leases 6.60 % Weighted average remaining lease term - operating leases 2.8 years Weighted average discount rate - operating leases 5.50 % Lease cost recognized in the consolidated income statement for the three and nine months ended September 30, 2019 is as follows: Three Months Ended Nine Months Ended September 30, 2019 September 30, 2019 Finance lease cost Amortization of right-of-use assets $ 35 $ 99 Interest on lease liabilities 10 32 Operating lease cost 4,105 11,469 Short-term lease cost 160 294 Total lease cost $ 4,310 $ 11,894
Finance Lease, Liability, Maturity	Maturities of the Company’s lease liabilities as of September 30, 2019 are as follows: Year Operating Leases Finance Leases Total Remainder of 2019 $ 2,841 $ 32 $ 2,873 2020 13,238 165 13,403 2021 9,123 165 9,288 2022 4,034 151 4,185 2023 1,394 161 1,555 Thereafter 888 — 888 Total cash lease payments 31,518 674 32,192 Less: amounts representing interest (2,322 ) (76 ) (2,398 ) Total lease liabilities $ 29,196 $ 598 $ 29,794
Lessee, Operating Lease, Liability, Maturity	Maturities of the Company’s lease liabilities as of September 30, 2019 are as follows: Year Operating Leases Finance Leases Total Remainder of 2019 $ 2,841 $ 32 $ 2,873 2020 13,238 165 13,403 2021 9,123 165 9,288 2022 4,034 151 4,185 2023 1,394 161 1,555 Thereafter 888 — 888 Total cash lease payments 31,518 674 32,192 Less: amounts representing interest (2,322 ) (76 ) (2,398 ) Total lease liabilities $ 29,196 $ 598 $ 29,794

Asset Retirement Obligation (Ta

Asset Retirement Obligation (Tables)	9 Months Ended
	Sep. 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 623 Settlement of liability (2,348 ) Balance at September 30, 2019 $ 14,897

Revenue (Tables)

Revenue (Tables)	9 Months Ended
	Sep. 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 September 30, Nine Months Ended September 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 $ 25,153 38 % $ 39,500 63 % $ 73,161 40 % $ 96,417 60 % Reservation revenue 4,500 7 % 5,190 8 % 13,500 7 % 17,656 11 % Shortfall revenue 15,620 24 % 1,426 2 % 37,659 20 % 2,094 1 % Logistics revenue 20,417 31 % 17,030 27 % 61,086 33 % 44,055 28 % Total revenues $ 65,690 100 % $ 63,146 100 % $ 185,406 100 % $ 160,222 100 %

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 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 September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Weighted average common shares outstanding 40,233 40,541 40,102 40,483 Assumed conversion of restricted stock 7 10 61 65 Diluted weighted average common stock outstanding 40,240 40,551 40,163 40,548

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2019
Share-based Payment Arrangement [Abstract]
Unrecognized compensation expense is expected to be recognized	At September 30, 2019 , the Company had unrecognized compensation expense of $4,332 related to granted but unvested stock awards, which is to be recognized as follows: Remainder of 2019 $ 652 2020 2,076 2021 1,041 2022 461 2023 102 Total $ 4,332
Summary of restricted stock activity	The following table summarizes restricted stock activity under the Plans from December 31, 2018 through September 30, 2019 : Number of Shares Weighted Average Unvested, December 31, 2018 1,027 $ 9.83 Granted 337 $ 2.54 Vested (261 ) $ 8.77 Forfeited (18 ) $ 6.38 Unvested, September 30, 2019 1,085 $ 9.32

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments Disclosure	Future minimum annual commitments under such contracts at September 30, 2019 are as follows: Remainder of 2019 $ — 2020 2,275 2021 2,275 2022 2,275 2023 2,275 Thereafter 31,850 Total $ 40,950

Organization and Nature of Bu_2

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

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Finance lease, right-of-use asset	$ 650
Operating lease liabilities, current and long-term portions	$ 29,196
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

Acquisitions - Van Hook Crude A

Acquisitions - Van Hook Crude Acquisition Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Mar. 15, 2018
Business Acquisition [Line Items]
Total assets acquired	$ 312,079	$ 291,205	$ 15,549
Machinery, equipment and tooling
Business Acquisition [Line Items]
Total assets acquired	16,863	14,858	1,478
Plant and buildings
Business Acquisition [Line Items]
Total assets acquired	160,736	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

Acquisitions - Quickthree Solut

Acquisitions - Quickthree Solutions, Inc. (Details) - USD ($)	Jun. 01, 2018	Mar. 15, 2018	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Business Acquisition [Line Items]
Acquisition costs			$ 0	$ 0	$ 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

Acquisitions - Schedule of Cons

Acquisitions - Schedule of Consideration Transferred (Details) $ in Thousands	Jun. 01, 2018USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)manufactured_units	Sep. 30, 2018USD ($)	Dec. 31, 2018USD ($)
Business Acquisition [Line Items]
Contingent consideration – earnout		$ 2,800		$ 2,800		$ 7,167
Fair value adjustment		(1,215)	$ (2,100)	(2,757)	$ (2,100)
Contingent consideration		$ 2,800		$ 2,800
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				10
Maximum | Quickthree Solutions
Business Acquisition [Line Items]
Units Used In Calculation | manufactured_units				37

Acquisitions - Schedule of Asse

Acquisitions - Schedule of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Jun. 01, 2018	Sep. 30, 2019	Sep. 30, 2019
Business Acquisition [Line Items]
Assets Impaired		$ 8,500	$ 8,500
Quickthree Solutions
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 | Quickthree Solutions
Assets Acquired
Trade name	900
Customer relationships
Business Acquisition [Line Items]
Assets Impaired			0
Customer relationships | Quickthree Solutions
Assets Acquired
Intangibles	$ 270
Liabilities Assumed
Useful Life (in years)	1 year
Developed technology
Business Acquisition [Line Items]
Assets Impaired			$ 8,500
Developed technology | Quickthree Solutions
Assets Acquired
Intangibles	$ 18,800
Liabilities Assumed
Useful Life (in years)	13 years

Acquisitions Fair Value of Fina

Acquisitions Fair Value of Financial Instruments Carried at Fair Value (Details) $ in Thousands	Sep. 30, 2019USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	$ 2,800
Total liabilities	2,800
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	2,800
Total liabilities	$ 2,800

Acquisitions Fair Value Reconci

Acquisitions Fair Value Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets Impaired	$ 8,500		$ 8,500
Fair value adjustment	(1,215)	$ (2,100)	(2,757)	$ (2,100)
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			(1,610)
Balance as of September 30, 2018	$ 2,800		$ 2,800

Inventories - Schedule of Inven

Inventories - Schedule of Inventories (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Inventory [Line Items]
Total inventory	$ 15,926	$ 18,575
Sand
Inventory [Line Items]
Raw material	391	1,201
Work in progress	10,381	10,070
Finished goods	4,351	4,648
Spare parts	803	1,356
Total inventory	$ 15,926	$ 17,275

Inventories - Schedule of Wells

Inventories - Schedule of Wellsite Storage Solutions inventory (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Inventory [Line Items]
Total inventory	$ 15,926	$ 18,575
Wellsite storage solutions
Inventory [Line Items]
Work in progress	0	1,300
Total inventory	$ 0	$ 1,300

Property, Plant and Equipment_3

Property, Plant and Equipment, Net - Schedule of Net Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Mar. 15, 2018
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 312,079	$ 291,205	$ 15,549
Less: accumulated depreciation and depletion	61,593	42,809
Total property, plant and equipment, net	250,486	248,396
Machinery, equipment and tooling
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	16,863	14,858	1,478
SmartSystems
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	14,123	5,286
Vehicles
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,436	1,955
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,228	1,140
Plant and building
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	160,736	158,882	1,407
Real estate properties
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	4,913	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	27,683	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	1,883	1,806
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 25,022	$ 21,619

Property, Plant and Equipment_4

Property, Plant and Equipment, Net - Narrative (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Property, Plant and Equipment [Abstract]
Depreciation expenses	$ 6,610,000	$ 4,608,000	$ 18,648,000	$ 11,751,000
Depletion expense	$ 20,000	31,000	38,000	51,000
Interest expense capitalized		$ 0	$ 0	$ 0

Intangible Assets, net - Schedu

Intangible Assets, net - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life (Years)		11 years 8 months
Assets Impaired	$ 8,500	$ 8,500
Accumulated Amortization	1,326	1,326
Net Book Value at September 30, 2019	9,244	9,244
Gross Carrying Amount at December 31, 2018			$ 19,070
Net Book Value at September 30, 2019	9,244	$ 9,244	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
Assets Impaired		$ 8,500
Accumulated Amortization	1,056	1,056
Net Book Value at September 30, 2019	9,244	$ 9,244
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life (Years)		1 year
Gross Carrying Amount at December 31, 2018			$ 270
Assets Impaired		$ 0
Accumulated Amortization	270	270
Net Book Value at September 30, 2019	$ 0	$ 0

Intangible Assets, Net (Details

Intangible Assets, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Estimated Useful Life (Years)			11 years 8 months
Amortization of intangible assets	$ 362	$ 289	$ 1,199	$ 572
Impairment of intangible asset	7,628	$ 0	7,628	$ 0
Assets Impaired	$ 8,500		$ 8,500

Intangible Assets, Net - Sche_2

Intangible Assets, Net - Schedule of future amortization expense of intangible assets (Details) $ in Thousands	Sep. 30, 2019USD ($)
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Remainder of 2019	$ 264
2020	792
2021	792
2022	792
2023	792
Thereafter	5,812
Total	$ 9,244

(Details)

(Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Payables and Accruals [Abstract]
Employee related expenses	$ 4,085	$ 1,894
Accrued construction related expenses	226	948
Accrued professional fees	399	465
Accrued royalties	1,903	1,780
Accrued freight and delivery charges	1,978	2,556
Accrued real estate tax	605	0
Accrued utilities	207	0
Accrued income taxes	281	0
Deferred rent	0	712
Other accrued liabilities	550	37
Total accrued liabilities	$ 10,234	$ 8,392

Credit Facility - Additional In

Credit Facility - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Line of Credit Facility [Line Items]
Debt fee	$ 1,815		$ 1,815		$ 728
Accretion of debt discount	186	$ 65	517	$ 181
Amortization of deferred financing cost	54	$ 85	172	$ 223
Senior Secured Revolving Credit Facility
Line of Credit Facility [Line Items]
Revolving credit facility	52,500		52,500
Undrawn availability	30,000		30,000
Credit Facility | Senior Secured Revolving Credit Facility
Line of Credit Facility [Line Items]
Long-term line of credit	$ 22,500		$ 22,500		$ 44,500

Debt Long-Term Debt, Net (Detai

Debt Long-Term Debt, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Line of Credit Facility [Line Items]
Current portion of long-term debt	$ 23,940	$ 829
Long-term debt, net of current portion	6,791	47,893
Credit Facility
Line of Credit Facility [Line Items]
Revolving credit facility, net	21,684	0
Revolving credit facility, net	21,684	0
Credit Facility | Senior Secured Revolving Credit Facility
Line of Credit Facility [Line Items]
Revolving credit facility, net	21,684	44,255
Revolving credit facility	22,500	44,500
Less: Debt discount, net	(816)	(245)
Revolving credit facility, net	21,684	44,255
Finance leases
Line of Credit Facility [Line Items]
Current portion of long-term debt	95	90
Long-term debt, net of current portion	503	547
Notes payable
Line of Credit Facility [Line Items]
Current portion of long-term debt	2,161	739
Long-term debt, net of current portion	6,288	3,091
Credit Facility
Line of Credit Facility [Line Items]
Long-term debt, net of current portion	$ 0	$ 44,255

Leases (Details)

Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Leases [Abstract]
Operating right-of-use assets	$ 29,702	$ 0
Property, plant and equipment, net	650
Total right-of use assets	30,352
Operating lease liabilities, current and long-term portions	29,196
Long-term debt, current and long-term portions	598
Total lease liabilities	$ 29,794

Leases Lease Cost (Details)

Leases Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Leases [Abstract]
Amortization of right-of-use assets	$ 35	$ 99
Interest on lease liabilities	10	32
Operating lease cost	4,105	11,469
Short-term lease cost	160	294
Total lease cost	$ 4,310	$ 11,894

Leases Other Lease (Details)

Leases Other Lease (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Operating cash flows used for finance leases	$ 33
Operating cash flows used for operating leases	12,447
Financing cash flows used for finance leases	79
Right-of-use assets obtained in exchange for new finance lease liabilities	55
Finance lease, right-of-use asset	650
Right-of-use assets recorded upon adoption	$ 5,053
Weighted average remaining lease term - finance leases	3 years 11 months
Weighted average discount rate - finance leases	6.60%
Weighted average remaining lease term - operating leases	2 years 9 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

Leases Lease Maturities (Detail

Leases Lease Maturities (Details) $ in Thousands	Sep. 30, 2019USD ($)
Operating Leases
Remainder of 2019	$ 2,841
2020	13,238
2021	9,123
2022	4,034
2023	1,394
Thereafter	888
Total cash lease payments	31,518
Less: amounts representing interest	(2,322)
Operating lease liabilities, current and long-term portions	29,196
Finance Leases
Remainder of 2019	32
2020	165
2021	165
2022	151
2023	161
Thereafter	0
Total cash lease payments	674
Less: amounts representing interest	(76)
Long-term debt, current and long-term portions	598
Total
Remainder of 2019	2,873
2020	13,403
2021	9,288
2022	4,185
2023	1,555
Thereafter	888
Total cash lease payments	32,192
Less: amounts representing interest	2,398
Total lease liabilities	$ 29,794

Leases Narrative (Details)

Leases Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Lease expense	$ 3,965	$ 10,658
Equipment
Lessee, Lease, Description [Line Items]
Assets under equipment leases, gross			$ 657
Leased assets, depreciation expense	$ 3	$ 113

Asset Retirement Obligation - A

Asset Retirement Obligation - Additional Information (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Asset Retirement Obligation Disclosure [Abstract]
Post-closure reclamation and site restoration obligation	$ 14,897	$ 13,322

Asset Retirement Obligation - R

Asset Retirement Obligation - Reconciliation of Total Reclamation Liability for Asset Retirement Obligations (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2019USD ($)
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
December 31, 2018	$ 13,322
Additions and revisions of prior estimates	3,301
Accretion expense	623
Settlement of liability	(2,348)
September 30, 2019	$ 14,897

Revenue Disaggregation of Reven

Revenue Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Revenue	$ 65,690	$ 63,146	$ 185,406	$ 160,222
Sand sales revenue
Disaggregation of Revenue [Line Items]
Revenue	25,153	39,500	73,161	96,417
Reservation revenue
Disaggregation of Revenue [Line Items]
Revenue	4,500	5,190	13,500	17,656
Shortfall revenue
Disaggregation of Revenue [Line Items]
Revenue	15,620	1,426	37,659	2,094
Logistics revenue
Disaggregation of Revenue [Line Items]
Revenue	$ 20,417	$ 17,030	$ 61,086	$ 44,055
Product Concentration Risk | Percentage of Total Revenue
Disaggregation of Revenue [Line Items]
Percentage of Total Revenue	100.00%	100.00%	100.00%	100.00%
Product Concentration Risk | Percentage of Total Revenue | Sand sales revenue
Disaggregation of Revenue [Line Items]
Percentage of Total Revenue	38.00%	63.00%	40.00%	60.00%
Product Concentration Risk | Percentage of Total Revenue | Reservation revenue
Disaggregation of Revenue [Line Items]
Percentage of Total Revenue	7.00%	8.00%	7.00%	11.00%
Product Concentration Risk | Percentage of Total Revenue | Shortfall revenue
Disaggregation of Revenue [Line Items]
Percentage of Total Revenue	24.00%	2.00%	20.00%	1.00%
Product Concentration Risk | Percentage of Total Revenue | Logistics revenue
Disaggregation of Revenue [Line Items]
Percentage of Total Revenue	31.00%	27.00%	33.00%	28.00%

Revenue Deferred Revenue (Detai

Revenue Deferred Revenue (Details) - USD ($)	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Revenue Recognition and Deferred Revenue [Abstract]
Deferred revenue	$ 5,545,000	$ 4,095,000
Revenue recognized	1,017,000
Revenue recharacterized due to an amended contract	2,500
Revenue expected to be recognized	$ 578,000

Revenue Reportable Segments (De

Revenue Reportable Segments (Details)	9 Months Ended
	Sep. 30, 2019segment
Revenue from Contract with Customer [Abstract]
Number of Reportable Segments	1

Earnings Per Share Anti-dilutiv

Earnings Per Share Anti-dilutive Awards Excluded from Calculation (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	770	1,022	760	646

Earnings Per Share (Details)

Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Weighted average common shares outstanding (in shares)	40,233	40,541	40,102	40,483
Assumed conversion of restricted stock (in shares)	7	10	61	65
Diluted weighted average common stock outstanding (in shares)	40,240	40,551	40,163	40,548

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 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	$ 4,332		$ 4,332
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock shares issued (in shares)			337,000
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)			337,000	742,000
Stock compensation expense recognized	$ 652	$ 873	$ 2,196	$ 2,133
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
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%

Stock-Based Compensation - Unre

Stock-Based Compensation - Unrecognized Compensation Expense is to be Recognized (Detail) $ in Thousands	Sep. 30, 2019USD ($)
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Unrecognized stock based compensation expense	$ 4,332
Remainder of 2019
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Unrecognized stock based compensation expense	652
2020
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Unrecognized stock based compensation expense	2,076
2021
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Unrecognized stock based compensation expense	1,041
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	$ 102

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Restricted Stock Activity (Detail) - Restricted Stock shares in Thousands	9 Months Ended
	Sep. 30, 2019$ / sharesshares
Number of Shares
Unvested, December 31, 2017 (in shares) | shares	1,027
Granted (in shares) | shares	337
Vested (in shares) | shares	(261)
Forfeited (in shares) | shares	(18)
Unvested, September 30, 2018 (in shares) | shares	1,085
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	8.77
Forfeited (in dollars per share) | $ / shares	6.38
Unvested, September 30, 2018 (in dollars per share) | $ / shares	$ 9.32

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Statutory tax rate	19.00%	27.60%	20.40%	23.90%
Liability for uncertain tax position	$ 0		$ 0		$ 0

Concentrations - Additional Inf

Concentrations - Additional Information (Detail)	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accounts Receivable | Customer Concentration Risk | Three Customers
Concentration Risk [Line Items]
Percentage of Total Revenue	80.00%
Accounts Receivable | Customer Concentration Risk | Four Customers
Concentration Risk [Line Items]
Percentage of Total Revenue		89.00%
Revenue | Customer Concentration Risk | Three Customers
Concentration Risk [Line Items]
Percentage of Total Revenue			82.00%		74.00%
Revenue | Customer Concentration Risk | Four Customers
Concentration Risk [Line Items]
Percentage of Total Revenue				82.00%		55.00%
Accounts Payables | Supplier Concentration Risk | Three Vendors
Concentration Risk [Line Items]
Percentage of Total Revenue	37.00%
Accounts Payables | Supplier Concentration Risk | One Vendor
Concentration Risk [Line Items]
Percentage of Total Revenue		16.00%
Cost of Goods Sold | Supplier Concentration Risk | Two Supplier
Concentration Risk [Line Items]
Percentage of Total Revenue			57.00%		53.00%	44.00%
Cost of Goods Sold | Supplier Concentration Risk | Three Suppliers
Concentration Risk [Line Items]
Percentage of Total Revenue				58.00%

Commitments and Contingencies -

Commitments and Contingencies - Schedule of Future Minimum Annual Commitments Under Non-Lease Contracts (Detail) $ in Thousands	Sep. 30, 2019USD ($)
Commitments and Contingencies Disclosure [Abstract]
Remainder of 2019	$ 0
2020	2,275
2021	2,275
2022	2,275
2023	2,275
Thereafter	31,850
Total	$ 40,950

Commitments and Contingencies L

Commitments and Contingencies Litigation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 65,690	$ 63,146	$ 185,406	$ 160,222
Accounts receivable, net	58,749		58,749		$ 18,989
Pending Litigation
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	16,343		31,893
Accounts receivable, net	$ 35,045		$ 35,045