Quest Resource Holding (QRHC) 10-Q 15 May 19 2019 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	May 01, 2019
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Trading Symbol	QRHC
Entity Registrant Name	Quest Resource Holding Corporation
Entity Central Index Key	0001442236
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		15,328,870

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 2,065,462	$ 2,122,297
Accounts receivable, less allowance for doubtful accounts of $992,447 and $929,399 as of March 31, 2019 and December 31, 2018, respectively	17,733,195	16,711,809
Prepaid expenses and other current assets	1,146,871	965,755
Total current assets	20,945,528	19,799,861
Goodwill	58,208,490	58,208,490
Intangible assets, net	2,360,400	2,610,921
Property and equipment, net, and other assets	2,923,145	968,025
Total assets	84,437,563	81,587,297
Current liabilities:
Accounts payable and accrued liabilities	17,036,123	15,777,921
Deferred revenue and other current liabilities	51,838	71,717
Total current liabilities	17,087,961	15,849,638
Revolving credit facility, net	5,157,659	5,194,588
Other long-term liabilities	1,608,946	353
Total liabilities	23,854,566	21,044,579
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.001 par value, 10,000,000 shares authorized, no shares issued or outstanding as of March 31, 2019 and December 31, 2018
Common stock, $0.001 par value, 200,000,000 shares authorized, 15,328,870 shares issued and outstanding as of March 31, 2019 and December 31, 2018	15,329	15,329
Additional paid-in capital	159,905,573	159,701,542
Accumulated deficit	(99,337,905)	(99,174,153)
Total stockholders’ equity	60,582,997	60,542,718
Total liabilities and stockholders’ equity	$ 84,437,563	$ 81,587,297

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (Unaudited) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts receivable	$ 992,447	$ 929,399
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	15,328,870	15,328,870
Common stock, shares outstanding	15,328,870	15,328,870

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Revenue	$ 26,649,041	$ 24,695,923
Cost of revenue	22,106,196	21,148,096
Gross profit	4,542,845	3,547,827
Operating expenses:
Selling, general, and administrative	4,214,230	3,751,760
Depreciation and amortization	325,787	984,581
Total operating expenses	4,540,017	4,736,341
Operating income (loss)	2,828	(1,188,514)
Interest expense	111,811	124,005
Loss before taxes	(108,983)	(1,312,519)
Income tax expense	54,769
Net loss	(163,752)	(1,312,519)
Net loss applicable to common stockholders	$ (163,752)	$ (1,312,519)
Net loss per share
Basic and diluted	$ (0.01)	$ (0.09)
Weighted average number of common shares outstanding
Basic and diluted	15,328,870	15,302,455

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) - 3 months ended Mar. 31, 2019 - USD ($)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]
Beginning Balance at Dec. 31, 2018	$ 60,542,718	$ 15,329	$ 159,701,542	$ (99,174,153)
Beginning Balance, Shares at Dec. 31, 2018		15,328,870
Stock-based compensation	204,031		204,031
Net loss	(163,752)			(163,752)
Ending Balance at Mar. 31, 2019	$ 60,582,997	$ 15,329	$ 159,905,573	$ (99,337,905)
Ending Balance, Shares at Mar. 31, 2019		15,328,870

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net loss	$ (163,752)	$ (1,312,519)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation	67,516	103,310
Amortization of intangibles	291,769	926,567
Amortization of debt issuance costs	23,475	23,475
Provision for doubtful accounts	60,000	39,915
Stock-based compensation	204,031	224,123
Changes in operating assets and liabilities:
Accounts receivable	(1,081,386)	(960,509)
Prepaid expenses and other current assets	(181,116)	(41,550)
Security deposits and other assets	(12,732)	128,785
Accounts payable and accrued liabilities	857,244	2,822,666
Deferred revenue and other liabilities	(19,205)	(166,700)
Net cash provided by operating activities	45,844	1,787,563
Cash flows from investing activities:
Purchase of property and equipment		(9,367)
Purchase of capitalized software development	(41,248)	(50,925)
Net cash used in investing activities	(41,248)	(60,292)
Cash flows from financing activities:
Proceeds from credit facilities	25,526,171	21,936,963
Repayments of credit facilities	(25,586,575)	(23,622,978)
Repayments of finance lease obligations	(1,027)	(12,962)
Net cash used in financing activities	(61,431)	(1,698,977)
Net increase (decrease) in cash and cash equivalents	(56,835)	28,294
Cash and cash equivalents at beginning of period	2,122,297	1,055,281
Cash and cash equivalents at end of period	2,065,462	1,083,575
Supplemental cash flow information:
Cash paid for interest	$ 95,171	74,394
Supplemental non-cash activities:
Sale of goodwill and intangible assets		246,585
Investment in Earth Media Partners, LLC		$ (246,585)

The Company and Description of

The Company and Description of Business	3 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
The Company and Description of Business	1. The Company and Description of Business The accompanying condensed consolidated financial statements include the accounts of Quest Resource Holding Corporation (“QRHC”) and its subsidiaries, Quest Resource Management Group, LLC (“Quest”), Landfill Diversion Innovations, LLC (“LDI”), Youchange, Inc. (“Youchange”), Quest Vertigent Corporation (“QVC”), Quest Vertigent One, LLC (“QV One”), and Quest Sustainability Services, Inc. (“QSS”) (collectively, “we,” “us,” “our,” or “our company”). Operations – We are a national provider of reuse, recycling, and disposal services that enable our customers to achieve and satisfy their environmental and sustainability goals and responsibilities. We provide businesses across multiple industry sectors with single source solutions for the reuse, recycling, and disposal of a wide variety of waste streams and recyclables generated by their operations.

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. Summary of Significant Accounting Policies Principles of Presentation and Consolidation The condensed consolidated financial statements included herein have been prepared by us without audit pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) and should be read in conjunction with our audited financial statements for the year ended December 31, 2018. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted as permitted by the SEC, although we believe the disclosures that are made are adequate to make the information presented herein not misleading. The accompanying condensed consolidated financial statements reflect, in our opinion, all normal recurring adjustments necessary to present fairly our financial position at March 31, 2019 and the results of our operations and cash flows for the periods presented. We derived the December 31, 2018 condensed consolidated balance sheet data from audited financial statements; however, we did not include all disclosures required by GAAP. As QRHC, Quest, LDI, Youchange, QVC, QV One, and QSS each operate as environmental-based service companies, we did not deem segment reporting necessary. All intercompany accounts and transactions have been eliminated in consolidation. Interim results are subject to seasonal variations, and the results of operations for the three months ended March 31, 2019 are not necessarily indicative of the results to be expected for the full year. Net Loss per Share We compute basic net loss per share by dividing net loss applicable to common stockholders by the weighted average number of shares of common stock outstanding during the period. We have other potentially dilutive securities outstanding that are not shown in a diluted net loss per share calculation because their effect in both 2019 and 2018 would be anti-dilutive. These potentially dilutive securities include stock options and warrants and totaled 3,921,048 and 3,497,424 shares at March 31, 2019 and 2018, respectively. The following table sets forth the anti-dilutive securities excluded from diluted loss per share: March 31, 2019 2018 (Unaudited) (Unaudited) Anti-dilutive securities excluded from diluted loss per share: Stock options 2,187,483 1,763,859 Warrants 1,733,565 1,733,565 Total anti-dilutive securities excluded from diluted loss per share 3,921,048 3,497,424 Recent Accounting Pronouncements Adopted On January 1, 2019, we adopted Accounting Standards Update (“ASU”) 2016-02, Leases (Topic 842), Leases Leases On January 1, 2018, we adopted ASU 2014-09, Revenue from Contracts with Customers (Topic 606), Revenue Pending Adoption In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326) There have been no other recent accounting pronouncements or changes in accounting pronouncements that have been issued but not yet adopted that are of significance, or potential significance, to us.

Property and Equipment, Net, an

Property and Equipment, Net, and Other Assets	3 Months Ended
	Mar. 31, 2019
Property Plant And Equipment [Abstract]
Property and Equipment, Net, and Other Assets	3. Property and Equipment, net, and Other Assets At March 31, 2019 and December 31, 2018, property and equipment, net, and other assets consisted of the following: March 31, December 31, 2019 2018 (Unaudited) Property and equipment, net of accumulated depreciation of $2,591,217 and $2,523,700 as of March 31, 2019 and December 31, 2018, respectively $ 547,002 $ 614,518 Right-of-use operating lease asset 2,009,904 — Security deposits and other assets 366,239 353,507 Property and equipment, net, and other assets $ 2,923,145 $ 968,025 We compute depreciation using the straight-line method over the estimated useful lives of the property and equipment. Depreciation expense for the three months ended March 31, 2019 was $67,516, including $33,498 of depreciation expense reflected within “Cost of revenue” in our condensed consolidated statements of operations as it related to assets used in directly servicing customer contracts. Depreciation expense for the three months ended March 31, 2018 was $103,310, including $45,296 of depreciation expense reflected within “Cost of revenue.” We recorded a right-of-use operating lease asset of $2.0 million related to our corporate office lease upon the adoption of ASC 842 effective January 1, 2019. Refer to Note 7, Leases On February 20, 2018 (the “Closing Date”), we entered into an Asset Purchase Agreement with Earth Media Partners, LLC to sell certain assets of our wholly owned subsidiary, Earth911, Inc., in exchange for a 19% interest in Earth Media Partners, LLC, which was recorded as an investment in the amount of $246,585 as of the Closing Date, and a potential future earn-out amount of approximately $350,000. The net assets sold related to the Earth911.com website business and consisted primarily of the website and its content and customers, deferred revenue, and accounts receivable as of the Closing Date. Following the Closing Date, Earth911, Inc. was subsequently renamed Quest Sustainability Services, Inc. In addition to our investment in Earth Media Partners, LLC, we accrued a receivable in the amount of $74,298 related to the earn-out as of March 31, 2019. The carrying amount of our investment and the accrued earn-out receivable are included in other assets.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	3 Months Ended
	Mar. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	4. Goodwill and Other Intangible Assets The components of goodwill and other intangible assets were as follows: March 31, 2019 (Unaudited) Estimated Useful Life Gross Carrying Amount Accumulated Amortization Net Finite lived intangible assets: Customer relationships 5 years $ 12,720,000 $ 12,720,000 $ — Trademarks 7 years 6,235,068 5,082,988 1,152,080 Patents 7 years 230,683 230,683 — Software 7 years 1,975,556 767,236 1,208,320 Customer lists 5 years 307,153 307,153 — Total finite lived intangible assets $ 21,468,460 $ 19,108,060 $ 2,360,400 December 31, 2018 Estimated Useful Life Gross Carrying Amount Accumulated Amortization Net Finite lived intangible assets: Customer relationships 5 years $ 12,720,000 $ 12,720,000 $ — Trademarks 7 years 6,235,068 4,860,305 1,374,763 Patents 7 years 230,683 230,683 — Software 7 years 1,934,308 698,150 1,236,158 Customer lists 5 years 307,153 307,153 — Total finite lived intangible assets $ 21,427,212 $ 18,816,291 $ 2,610,921 March 31, 2019 (Unaudited) and December 31, 2018 Estimated Useful Life Carrying Amount Indefinite lived intangible asset: Goodwill Indefinite $ 58,208,490 We compute amortization using the straight-line method over the estimated useful lives of the finite lived intangible assets. Amortization expense related to finite lived intangible assets was $291,769 and $926,567 for the three months ended March 31, 2019 and 2018, respectively. We have no indefinite-lived intangible assets other than goodwill. The goodwill is not deductible for tax purposes. We performed our annual impairment analysis for goodwill and other intangible assets in the third quarter of 2018 with no impairment recorded.

Accounts Payable and Accrued Li

Accounts Payable and Accrued Liabilities	3 Months Ended
	Mar. 31, 2019
Accounts Payable And Accrued Liabilities Current [Abstract]
Accounts Payable and Accrued Liabilities	5. Accounts Payable and Accrued Liabilities The components of Accounts payable and accrued liabilities were as follows: March 31, December 31, 2019 2018 (Unaudited) Accounts payable $ 14,389,961 $ 14,025,221 Accrued taxes 639,570 548,126 Employee compensation 868,253 910,796 Operating lease liability – current portion 594,642 — Other 543,697 293,778 $ 17,036,123 $ 15,777,921 Refer to Note 7, Leases Leases

Revolving Credit Facility

Revolving Credit Facility	3 Months Ended
	Mar. 31, 2019
Debt Disclosure [Abstract]
Revolving Credit Facility	6. Revolving Credit Facility We entered into a Loan, Security and Guaranty Agreement (the “Citizens Loan Agreement”), dated as of February 24, 2017, with Citizens Bank, National Association as a lender, and as administrative agent, collateral agent, and issuing bank, which provides for an asset-based revolving credit facility (the “ABL Facility”) of up to $20 million and an equipment loan facility in the maximum principal amount of $2.0 million. Each loan under the ABL Facility bears interest, at our option, at either the Base Rate, as defined in the Citizens Loan Agreement, plus a margin ranging from 1.0% to 1.5% (6.75% as of March 31, 2019), or the LIBOR lending rate for the interest period in effect, plus a margin ranging from 2.0% to 2.5% (4.85% as of March 31, 2019). The maturity date of the ABL Facility is February 24, 2022. We had no borrowings under the equipment loan facility, which were required to be requested no later than February 24, 2019. The ABL Facility contains certain specific financial covenants regarding a minimum liquidity requirement and a minimum fixed charge coverage ratio. In addition, the ABL Facility contains negative covenants limiting, among other things, additional indebtedness, transactions with affiliates, additional liens, sales of assets, dividends, investments and advances, mergers and acquisitions, and other matters customarily restricted in such agreements. The amount of interest expense related to borrowings for the three months ended March 31, 2019 and 2018 was $86,742 and $84,288, respectively. Debt issuance cost of $469,507 is being amortized to interest expense over the term of the ABL Facility beginning March 1, 2017. As of March 31, 2019, the unamortized portion of the debt issuance costs was $273,879. The amount of interest expense related to the amortization of the discount on the ABL Facility for was $23,475.

Leases

Leases	3 Months Ended
	Mar. 31, 2019
Lessee Disclosure [Abstract]
Leases	7. Leases ASU 2016-02 Adoption On January 1, 2019, we adopted ASU 2016-02, Leases (Topic 842) When we have the option to extend the lease term, terminate the lease before the contractual expiration date, or purchase the leased asset, and if it is reasonably certain that we will exercise the option, we consider these options in determining the classification and measurement of the lease. As of December 31, 2018, leases classified as capital leases under ASC 840 were included in Property and equipment, net and represented almost fully depreciated office equipment with a negligible book value. We lease certain equipment to a customer under a lease arrangement that expires in 2020. The capital lease receivable amounts are approximately $150,000 at March 31, 2019, the majority of which is included in Prepaid expenses and other current assets. Balance Sheet Classification The table below presents the lease related assets and liabilities recorded on the balance sheet. Right-of-use assets and related liabilities related to finance leases at March 31, 2019 are de minimis and mature in less than 12 months. March 31, 2019 Operating Leases: Right-of-use operating lease asset: Property and equipment, net and other assets $ 2,009,904 Lease Liabilities: Accounts payable and accrued liabilities $ 594,642 Other long-term liabilities 1,608,946 Total operating lease liabilities $ 2,203,588 Lease Costs For the three months ended March 31, 2019, we recorded approximately $150,000 of fixed cost operating lease expense. Our operating lease expense is offset by a minimum annual incentive received from a local Economic Development Council (“EDC”), which is accrued monthly and will continue over the term of the lease through August 2022. This minimum annual incentive is $63,000, which will increase to $93,600 for the annual incentive period starting September 2020. Cash paid for operating leases approximated operating lease expense and non-cash right of use asset amortization for the three months ended March 31, 2019. We did not obtain any new operating lease right-of-use assets in the three months ended March 31, 2019. Other Information Our office lease had a remaining term of 3.5 years as of March 31, 2019, and we used an effective interest rate of 2.456%, which was our incremental borrowing rate in effect at the inception of the lease as our lease does not provide a readily determinable implicit rate. The future minimum lease payments required under our office lease as of March 31, 2019 were as follows: Year Ending December 31, Amount 2019 $ 476,190 2020 664,200 2021 664,200 2022 498,150 Total lease payments 2,302,740 Less: Interest 99,152 Present value of lease liabilities $ 2,203,588

Revenue

Revenue	3 Months Ended
	Mar. 31, 2019
Revenue From Contract With Customer [Abstract]
Revenue	8. Revenue Operating Revenues We provide businesses with services to reuse, recycle, and dispose of a wide variety of waste streams and recyclables generated by their operations. In addition, we have product sales and other revenue primarily from sales of products, such as antifreeze and windshield washer fluid, as well as minor ancillary services. Revenue Recognition We recognize revenue as services are performed or products are delivered. For example, we recognize revenue as waste and recyclable material are collected or when products are delivered. We recognize revenue net of any contracted pricing discounts or rebate arrangements. We generally recognize revenue for the gross amount of consideration received as we are generally the primary obligor (or principal) in our contracts with customers as we hold complete responsibility to the customer for contract fulfillment. We record amounts collected from customers for sales tax on a net basis. Disaggregation of Revenue The following table presents our revenue disaggregated by source. Sales and usage-based taxes are excluded from revenue. Three customers accounted for 59.7% of revenue for the three months ended March 31, 2019, and three customers accounted for 48.4% of revenue for the three months ended March 31, 2018. We operate primarily in the United States, with minor services in Canada. Three Months Ended March 31, 2019 2018 (Unaudited) (Unaudited) Revenue Type: Services $ 24,054,519 $ 22,005,572 Product sales and other 2,594,522 2,690,351 Total revenue $ 26,649,041 $ 24,695,923 Contract Balances Our incremental direct costs of obtaining a customer contract are generally deferred and amortized to selling, general, and administrative expense or as a reduction to revenue (depending on the nature of the cost) over the estimated life of the customer contract. We classify our contract acquisition costs as current or noncurrent based on the timing of when we expect to recognize the amortization and are included in other assets. As of March 31, 2019 and December 31, 2018, we had $165,000 and $7,448, respectively, of deferred contract costs. During the three months ended March 31, 2019, we amortized $53,750 and nil of deferred contract costs to selling, general, and administrative expense and as a reduction to income, respectively. During the three months ended March 31, 2018, we amortized $33,333 and $18,069 of deferred contract costs to selling, general, and administrative expense and as a reduction to income, respectively. We bill certain customers in advance, and, accordingly, we defer recognition of related revenues as a contract liability until the services are provided and control is transferred to the customer. As of March 31, 2019 and December 31, 2018, we had $50,268 and $69,473, respectively, of deferred revenue, the majority of which was classified in “Deferred revenue and other current liabilities.”

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	9. Income Taxes Our statutory income tax rate is anticipated to be 27%. However, we had income tax expense of $54,769 on a net operating loss for the quarter ended March 31, 2019, which is attributable to state tax obligations for states with no net operating loss carryforwards, and the continued reserve against the benefit of the net operating losses at the federal level. We compute income taxes using the asset and liability method in accordance with FASB ASC Topic 740, Income Taxes

Fair Value of Financial Instrum

Fair Value of Financial Instruments	3 Months Ended
	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	10. Fair Value of Financial Instruments Our financial instruments consist of cash and cash equivalents, accounts receivable, accounts payable, accrued liabilities, deferred revenue, and the ABL Facility. We do not believe that we are exposed to significant interest, currency, or credit risks arising from these financial instruments. The fair values of these financial instruments approximate their carrying values using Level 3 inputs, based on their short maturities or, for the ABL Facility, based on borrowing rates currently available to us for loans with similar terms and maturities.

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2019
Equity [Abstract]
Stockholders' Equity	11. Stockholders’ Equity Preferred Stock Our authorized preferred stock consists of 10,000,000 shares of preferred stock with a par value of $0.001, of which no shares have been issued or are outstanding. Common Stock – Our authorized common stock consists of 200,000,000 shares of common stock with a par value of $0.001, of which 15,328,870 shares were issued and outstanding as of March 31, 2019 and December 31, 2018. Employee Stock Purchase Plan – On September 17, 2014, our stockholders approved our 2014 Employee Stock Purchase Plan (“ESPP”). We recorded expense of $6,557 and $2,044 related to the ESPP for the three months ended March 31, 2019 and 2018, respectively. Warrants – At March 31, 2019, we had outstanding exercisable warrants to purchase 1,733,565 shares of common stock. The following table summarizes the warrants issued and outstanding as of March 31, 2019: Date of Exercise Shares of Description Issuance Expiration Price Common Stock Exercisable warrants Warrants 09/24/2014 09/24/2019 $ 20.00 1,125,005 Warrants 10/20/2014 10/20/2019 $ 20.00 87,500 Warrants 3/30/2016 03/30/2021 $ 3.88 521,060 Total warrants issued and outstanding 1,733,565 Stock Options – We recorded stock option expense of $197,474 and $222,079 for the three months ended March 31, 2019 and 2018, respectively. The following table summarizes the stock option activity for the three months ended March 31, 2019: Stock Options Weighted- Exercise Average Number Price Per Exercise Price of Shares Share Per Share Outstanding at December 31, 2018 1,773,066 $1.17 — $26.00 $ 7.02 Granted 439,000 $1.51 — $1.51 $ 1.51 Canceled/Forfeited (24,583 ) $2.13 — $2.50 $ 2.37 Outstanding at March 31, 2019 2,187,483 $1.17 — $26.00 $ 5.96

Subsequent Event

Subsequent Event	3 Months Ended
	Mar. 31, 2019
Text Block [Abstract]
Subsequent Event	12. Subsequent Event Subsequent to quarter end, three stockholders sold approximately 4.3 million shares of our common stock in a registered public offering that closed on April 11, 2019. In a separate private transaction, a certain selling stockholder sold 1,750,000 shares of our common stock. The offering and private transaction, together the “Transactions”, closed on April 11, 2019. We did not receive any proceeds from sales by the selling stockholders in the Transactions. We incurred costs and expenses in connection with the Transactions, consisting of various registration, due diligence, printing, and professional service fees and expenses, and such costs, less amounts reimbursed by the selling stockholders at the closing of the Transactions, were approximately $245,000. Of the $245,000, approximately $230,000 is included in selling, general, and administrative expense for the three months ended March 31, 2019, with the remaining $15,000 to be recorded in April 2019.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
Principles of Presentation and Consolidation	Principles of Presentation and Consolidation The condensed consolidated financial statements included herein have been prepared by us without audit pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) and should be read in conjunction with our audited financial statements for the year ended December 31, 2018. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted as permitted by the SEC, although we believe the disclosures that are made are adequate to make the information presented herein not misleading. The accompanying condensed consolidated financial statements reflect, in our opinion, all normal recurring adjustments necessary to present fairly our financial position at March 31, 2019 and the results of our operations and cash flows for the periods presented. We derived the December 31, 2018 condensed consolidated balance sheet data from audited financial statements; however, we did not include all disclosures required by GAAP. As QRHC, Quest, LDI, Youchange, QVC, QV One, and QSS each operate as environmental-based service companies, we did not deem segment reporting necessary. All intercompany accounts and transactions have been eliminated in consolidation. Interim results are subject to seasonal variations, and the results of operations for the three months ended March 31, 2019 are not necessarily indicative of the results to be expected for the full year.
Net Loss Per Share	Net Loss per Share We compute basic net loss per share by dividing net loss applicable to common stockholders by the weighted average number of shares of common stock outstanding during the period. We have other potentially dilutive securities outstanding that are not shown in a diluted net loss per share calculation because their effect in both 2019 and 2018 would be anti-dilutive. These potentially dilutive securities include stock options and warrants and totaled 3,921,048 and 3,497,424 shares at March 31, 2019 and 2018, respectively. The following table sets forth the anti-dilutive securities excluded from diluted loss per share: March 31, 2019 2018 (Unaudited) (Unaudited) Anti-dilutive securities excluded from diluted loss per share: Stock options 2,187,483 1,763,859 Warrants 1,733,565 1,733,565 Total anti-dilutive securities excluded from diluted loss per share 3,921,048 3,497,424
Recent Accounting Pronouncements	Recent Accounting Pronouncements Adopted On January 1, 2019, we adopted Accounting Standards Update (“ASU”) 2016-02, Leases (Topic 842), Leases Leases On January 1, 2018, we adopted ASU 2014-09, Revenue from Contracts with Customers (Topic 606), Revenue Pending Adoption In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326) There have been no other recent accounting pronouncements or changes in accounting pronouncements that have been issued but not yet adopted that are of significance, or potential significance, to us.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
Schedule of Anti-dilutive Securities Excluded from Diluted Loss Per Share	The following table sets forth the anti-dilutive securities excluded from diluted loss per share: March 31, 2019 2018 (Unaudited) (Unaudited) Anti-dilutive securities excluded from diluted loss per share: Stock options 2,187,483 1,763,859 Warrants 1,733,565 1,733,565 Total anti-dilutive securities excluded from diluted loss per share 3,921,048 3,497,424

Property and Equipment, Net, _2

Property and Equipment, Net, and Other Assets (Tables)	3 Months Ended
	Mar. 31, 2019
Property Plant And Equipment [Abstract]
Components Property and Equipment, Net, and Other Assets	At March 31, 2019 and December 31, 2018, property and equipment, net, and other assets consisted of the following: March 31, December 31, 2019 2018 (Unaudited) Property and equipment, net of accumulated depreciation of $2,591,217 and $2,523,700 as of March 31, 2019 and December 31, 2018, respectively $ 547,002 $ 614,518 Right-of-use operating lease asset 2,009,904 — Security deposits and other assets 366,239 353,507 Property and equipment, net, and other assets $ 2,923,145 $ 968,025

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Schedule of Indefinite-Lived Intangible Assets	Error extracting Word content
Schedule of Finite-Lived Intangible Assets	The components of goodwill and other intangible assets were as follows: March 31, 2019 (Unaudited) Estimated Useful Life Gross Carrying Amount Accumulated Amortization Net Finite lived intangible assets: Customer relationships 5 years $ 12,720,000 $ 12,720,000 $ — Trademarks 7 years 6,235,068 5,082,988 1,152,080 Patents 7 years 230,683 230,683 — Software 7 years 1,975,556 767,236 1,208,320 Customer lists 5 years 307,153 307,153 — Total finite lived intangible assets $ 21,468,460 $ 19,108,060 $ 2,360,400 December 31, 2018 Estimated Useful Life Gross Carrying Amount Accumulated Amortization Net Finite lived intangible assets: Customer relationships 5 years $ 12,720,000 $ 12,720,000 $ — Trademarks 7 years 6,235,068 4,860,305 1,374,763 Patents 7 years 230,683 230,683 — Software 7 years 1,934,308 698,150 1,236,158 Customer lists 5 years 307,153 307,153 — Total finite lived intangible assets $ 21,427,212 $ 18,816,291 $ 2,610,921

Accounts Payable and Accrued _2

Accounts Payable and Accrued Liabilities (Tables)	3 Months Ended
	Mar. 31, 2019
Accounts Payable And Accrued Liabilities Current [Abstract]
Components of Accounts Payable and Accrued Liabilities	The components of Accounts payable and accrued liabilities were as follows: March 31, December 31, 2019 2018 (Unaudited) Accounts payable $ 14,389,961 $ 14,025,221 Accrued taxes 639,570 548,126 Employee compensation 868,253 910,796 Operating lease liability – current portion 594,642 — Other 543,697 293,778 $ 17,036,123 $ 15,777,921

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2019
Lessee Disclosure [Abstract]
Summary of Lease Related Assets and Liabilities Recorded on Balance Sheet	The table below presents the lease related assets and liabilities recorded on the balance sheet. Right-of-use assets and related liabilities related to finance leases at March 31, 2019 are de minimis and mature in less than 12 months. March 31, 2019 Operating Leases: Right-of-use operating lease asset: Property and equipment, net and other assets $ 2,009,904 Lease Liabilities: Accounts payable and accrued liabilities $ 594,642 Other long-term liabilities 1,608,946 Total operating lease liabilities $ 2,203,588
Future Minimum Lease Payments Required Under Office Lease	The future minimum lease payments required under our office lease as of March 31, 2019 were as follows: Year Ending December 31, Amount 2019 $ 476,190 2020 664,200 2021 664,200 2022 498,150 Total lease payments 2,302,740 Less: Interest 99,152 Present value of lease liabilities $ 2,203,588

Revenue (Tables)

Revenue (Tables)	3 Months Ended
	Mar. 31, 2019
Revenue From Contract With Customer [Abstract]
Summary of Revenue Disaggregated by Source	The following table presents our revenue disaggregated by source. Three Months Ended March 31, 2019 2018 (Unaudited) (Unaudited) Revenue Type: Services $ 24,054,519 $ 22,005,572 Product sales and other 2,594,522 2,690,351 Total revenue $ 26,649,041 $ 24,695,923

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2019
Equity [Abstract]
Summary of Warrants Issued and Outstanding	The following table summarizes the warrants issued and outstanding as of March 31, 2019: Date of Exercise Shares of Description Issuance Expiration Price Common Stock Exercisable warrants Warrants 09/24/2014 09/24/2019 $ 20.00 1,125,005 Warrants 10/20/2014 10/20/2019 $ 20.00 87,500 Warrants 3/30/2016 03/30/2021 $ 3.88 521,060 Total warrants issued and outstanding 1,733,565
Summary of Stock Option Activity	The following table summarizes the stock option activity for the three months ended March 31, 2019 Stock Options Weighted- Exercise Average Number Price Per Exercise Price of Shares Share Per Share Outstanding at December 31, 2018 1,773,066 $1.17 — $26.00 $ 7.02 Granted 439,000 $1.51 — $1.51 $ 1.51 Canceled/Forfeited (24,583 ) $2.13 — $2.50 $ 2.37 Outstanding at March 31, 2019 2,187,483 $1.17 — $26.00 $ 5.96

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Jan. 01, 2019	Dec. 31, 2018
Significant Accounting Policies [Line Items]
Potentially dilutive securities include options and warrants	3,921,048	3,497,424
Operating lease right-of-use asset	$ 2,009,904
Operating lease liability	2,203,588
Accumulated deficit	$ (99,337,905)			$ (99,174,153)
ASU 2016-02 [Member]
Significant Accounting Policies [Line Items]
Operating lease right-of-use asset			$ 2,000,000
Operating lease liability			2,200,000
Accumulated deficit			$ 0

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Schedule of Anti-dilutive Securities Excluded from Diluted Loss Per Share (Detail) - shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from diluted loss per share	3,921,048	3,497,424
Stock options [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from diluted loss per share	2,187,483	1,763,859
Warrants [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from diluted loss per share	1,733,565	1,733,565

Property and Equipment, Net, _3

Property and Equipment, Net, and Other Assets - Components of Property and Equipment, Net, and Other Assets (Detail) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Property And Equipment Net And Other Assets [Abstract]
Property and equipment, net of accumulated depreciation of $2,591,217 and $2,523,700 as of March 31, 2019 and December 31, 2018, respectively	$ 547,002	$ 614,518
Right-of-use operating lease asset	2,009,904
Security deposits and other assets	366,239	353,507
Property and equipment, net, and other assets	$ 2,923,145	$ 968,025

Property and Equipment, Net, _4

Property and Equipment, Net, and Other Assets - Components of Property and Equipment, Net, and Other Assets ( Parenthetical) (Detail) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Property And Equipment Net And Other Assets [Abstract]
Accumulated depreciation, Property and equipment	$ 2,591,217	$ 2,523,700

Property and Equipment, Net, _5

Property and Equipment, Net, and Other Assets - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Jan. 01, 2019	Feb. 20, 2018
Property And Equipment Net And Other Assets [Line Items]
Depreciation	$ 67,516	$ 103,310
Right-of-use operating lease asset	2,009,904
Asset Purchase Agreement [Member] | Earth Media Partners, LLC [Member]
Property And Equipment Net And Other Assets [Line Items]
Percentage of ownership interest				19.00%
Ownership interest amount recorded as investment				$ 246,585
Accrued earn-out amount	74,298
Asset Purchase Agreement [Member] | Earth Media Partners, LLC [Member] | Wholly Owned Subsidiary and Earth911, Inc. [Member] | Disposal Group, Not Discontinued Operations [Member]
Property And Equipment Net And Other Assets [Line Items]
Future earn-out amount				$ 350,000
ASU 2016-02 [Member]
Property And Equipment Net And Other Assets [Line Items]
Right-of-use operating lease asset			$ 2,000,000
Service [Member]
Property And Equipment Net And Other Assets [Line Items]
Depreciation reflected in cost of revenue	$ 33,498	$ 45,296

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Schedule of Finite-Lived Intangible Assets (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 21,468,460	$ 21,427,212
Accumulated Amortization	19,108,060	18,816,291
Net	$ 2,360,400	$ 2,610,921
Customer relationships [Member]
Finite Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years	5 years
Gross Carrying Amount	$ 12,720,000	$ 12,720,000
Accumulated Amortization	$ 12,720,000	$ 12,720,000
Trademarks [Member]
Finite Lived Intangible Assets [Line Items]
Estimated Useful Life	7 years	7 years
Gross Carrying Amount	$ 6,235,068	$ 6,235,068
Accumulated Amortization	5,082,988	4,860,305
Net	$ 1,152,080	$ 1,374,763
Patents [Member]
Finite Lived Intangible Assets [Line Items]
Estimated Useful Life	7 years	7 years
Gross Carrying Amount	$ 230,683	$ 230,683
Accumulated Amortization	$ 230,683	$ 230,683
Software [Member]
Finite Lived Intangible Assets [Line Items]
Estimated Useful Life	7 years	7 years
Gross Carrying Amount	$ 1,975,556	$ 1,934,308
Accumulated Amortization	767,236	698,150
Net	$ 1,208,320	$ 1,236,158
Customer lists [Member]
Finite Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years	5 years
Gross Carrying Amount	$ 307,153	$ 307,153
Accumulated Amortization	$ 307,153	$ 307,153

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Schedule of Indefinite-Lived Intangible Assets (Detail) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Intangible Assets Net Including Goodwill [Abstract]
Carrying Amount	$ 58,208,490	$ 58,208,490

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2019	Sep. 30, 2018	Mar. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization of intangibles	$ 291,769		$ 926,567
Indefinite-lived intangible assets other than goodwill	$ 0
Impairment of goodwill and other intangible assets		$ 0

Accounts Payable and Accrued _3

Accounts Payable and Accrued Liabilities - Components of Accounts Payable and Accrued Liabilities (Detail) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Accounts Payable And Accrued Liabilities Current [Abstract]
Accounts payable	$ 14,389,961	$ 14,025,221
Accrued taxes	639,570	548,126
Employee compensation	868,253	910,796
Operating lease liability – current portion	594,642
Other	543,697	293,778
Accounts payable and accrued liabilities	$ 17,036,123	$ 15,777,921

Revolving Credit Facility - Add

Revolving Credit Facility - Additional Information (Detail) - USD ($)	Feb. 24, 2017	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Line of Credit Facility [Line Items]
Interest expense related to borrowings		$ 111,811	$ 124,005
Interest expense related to amortization of discount		23,475	23,475
Revolving credit facility, net		5,157,659		$ 5,194,588
ABL Facility [Member]
Line of Credit Facility [Line Items]
Revolving credit facility maximum principal amount	$ 20,000,000
Debt instrument maturity date	Feb. 24, 2022
Interest expense related to borrowings		86,742	$ 84,288
Debt issuance cost		469,507
Unamortized portion of debt discount		273,879
Interest expense related to amortization of discount		23,475
Revolving credit current borrowing facility		12,811,000
Revolving credit facility, net		5,157,659
Unamortized debt issuance cost		$ 273,879
ABL Facility [Member] | Base Rate [Member]
Line of Credit Facility [Line Items]
Debt instrument interest rate		6.75%
ABL Facility [Member] | LIBOR [Member]
Line of Credit Facility [Line Items]
Debt instrument interest rate		4.85%
ABL Facility [Member] | Minimum [Member] | Base Rate [Member]
Line of Credit Facility [Line Items]
Debt instrument, margin on variable rate	1.00%
ABL Facility [Member] | Minimum [Member] | LIBOR [Member]
Line of Credit Facility [Line Items]
Debt instrument, margin on variable rate	2.00%
ABL Facility [Member] | Maximum [Member] | Base Rate [Member]
Line of Credit Facility [Line Items]
Debt instrument, margin on variable rate	1.50%
ABL Facility [Member] | Maximum [Member] | LIBOR [Member]
Line of Credit Facility [Line Items]
Debt instrument, margin on variable rate	2.50%
Equipment Loan Facility [Member]
Line of Credit Facility [Line Items]
Revolving credit facility maximum principal amount	$ 2,000,000
Borrowings	$ 0

Leases - Additional Information

Leases - Additional Information (Details) - USD ($)	Sep. 01, 2020	Mar. 31, 2019	Jan. 01, 2019
Lessee Lease Description [Line Items]
Operating right-of-use asset		$ 2,009,904
Operating lease liabilities		$ 2,203,588
Equipment lease expire year		2020
Fixed cost operating lease expense		$ 150,000
Operating lease minimum annual incentive payment		$ 63,000
Operating lease, remaining lease term		3 years 6 months
Operating lease, effective interest rate		2.456%
Scenario, Forecast
Lessee Lease Description [Line Items]
Operating lease minimum annual incentive payment	$ 93,600
Maximum [Member]
Lessee Lease Description [Line Items]
Finance leases maturity period		12 months
ASU 2016-02 [Member]
Lessee Lease Description [Line Items]
Operating right-of-use asset			$ 2,000,000
Operating lease liabilities			$ 2,200,000

Leases - Additional Informati_2

Leases - Additional Information 1 (Details)	Mar. 31, 2019USD ($)
Lessor Disclosure [Abstract]
Capital lease receivable amounts	$ 150,000

Leases - Summary of Lease Relat

Leases - Summary of Lease Related Assets and Liabilities Recorded on Balance Sheet (Details)	Mar. 31, 2019USD ($)
Assets And Liabilities Lessee [Abstract]
Right-of-use operating lease asset	$ 2,009,904
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	qrhc:PropertyAndEquipmentNetAndOtherAssetsMember
Operating lease liability – current portion	$ 594,642
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccountsPayableAndAccruedLiabilitiesMember
Other long-term liabilities	$ 1,608,946
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherNoncurrentLiabilitiesMember
Total operating lease liabilities	$ 2,203,588

Leases - Future Minimum Lease P

Leases - Future Minimum Lease Payments Required Under Office Lease (Details)	Mar. 31, 2019USD ($)
Operating Lease Liabilities Payments Due [Abstract]
2019	$ 476,190
2020	664,200
2021	664,200
2022	498,150
Total lease payments	2,302,740
Less: Interest	99,152
Operating lease liability	$ 2,203,588

Revenue - Additional Informatio

Revenue - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2019USD ($)Customer	Mar. 31, 2018USD ($)Customer	Dec. 31, 2018USD ($)
Revenue Recognition [Line Items]
Number of customer | Customer	3	3
Percentage of revenue	59.70%	48.40%
Deferred contract costs	$ 165,000	$ 7,448
Deferred revenue	50,268		$ 69,473
Selling, General and Administrative Expense [Member]
Revenue Recognition [Line Items]
Amortized deferred contract costs	$ 53,750	33,333
Reduction to Income [Member]
Revenue Recognition [Line Items]
Amortized deferred contract costs		$ 18,069

Revenue - Summary of Revenue Di

Revenue - Summary of Revenue Disaggregated by Source (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Disaggregation Of Revenue [Line Items]
Total revenue	$ 26,649,041	$ 24,695,923
Services [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	24,054,519	22,005,572
Product Sales and Other [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	$ 2,594,522	$ 2,690,351

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income tax expense	$ 54,769
Federal corporate income tax rate	27.00%
Operating loss carryforwards	$ 0
Valuation allowance	12,195,000	$ 12,202,000
Federal income tax net operating loss carry forward	$ 18,900,000	$ 18,900,000
Net operating loss carry forwards expiration beginning year	2031
Net operating loss carry forwards expiration ending year	2037

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Equity [Abstract]
Preferred stock, shares authorized	10,000,000		10,000,000
Preferred stock, par value	$ 0.001		$ 0.001
Preferred stock, shares issued	0		0
Preferred stock, shares outstanding	0		0
Common stock, shares authorized	200,000,000		200,000,000
Common stock, par value	$ 0.001		$ 0.001
Common stock, shares issued	15,328,870		15,328,870
Common stock, shares outstanding	15,328,870		15,328,870
Employee stock purchase plan expense	$ 6,557	$ 2,044

Stockholders' Equity - Additi_2

Stockholders' Equity - Additional Information - Warrants (Detail)	Mar. 31, 2019shares
Class Of Warrant Or Right [Line Items]
Warrants outstanding	1,733,565
Exercisable Warrants [Member]
Class Of Warrant Or Right [Line Items]
Warrants outstanding	1,733,565

Stockholders' Equity - Summary

Stockholders' Equity - Summary of Warrants Issued and Outstanding (Detail)	3 Months Ended
	Mar. 31, 2019$ / sharesshares
Class Of Warrant Or Right [Line Items]
Shares of Common Stock	1,733,565
Exercisable Warrants [Member]
Class Of Warrant Or Right [Line Items]
Shares of Common Stock	1,733,565
Exercisable Warrants [Member] | Warrants One [Member]
Class Of Warrant Or Right [Line Items]
Date of Issuance	Sep. 24, 2014
Date of Expiration	Sep. 24, 2019
Exercise Price | $ / shares	$ 20
Shares of Common Stock	1,125,005
Exercisable Warrants [Member] | Warrants Two [Member]
Class Of Warrant Or Right [Line Items]
Date of Issuance	Oct. 20, 2014
Date of Expiration	Oct. 20, 2019
Exercise Price | $ / shares	$ 20
Shares of Common Stock	87,500
Exercisable Warrants [Member] | Warrants Three [Member]
Class Of Warrant Or Right [Line Items]
Date of Issuance	Mar. 30, 2016
Date of Expiration	Mar. 30, 2021
Exercise Price | $ / shares	$ 3.88
Shares of Common Stock	521,060

Stockholders' Equity - Additi_3

Stockholders' Equity - Additional Information - Stock Options (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Equity [Abstract]
Stock options expense	$ 197,474	$ 222,079

Stockholders' Equity - Summar_2

Stockholders' Equity - Summary of Stock Option Activity (Detail)	3 Months Ended
	Mar. 31, 2019$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding Beginning Balance, Number of Shares | shares	1,773,066
Granted, Number of Shares | shares	439,000
Canceled/Forfeited, Number of Shares | shares	(24,583)
Outstanding Ending Balance, Number of Shares | shares	2,187,483
Outstanding Beginning Balance, Weighted-Average Exercise Price Per Share	$ 7.02
Granted, Weighted-Average Exercise Price Per Share	1.51
Canceled/Forfeited, Weighted-Average Exercise Price Per Share	2.37
Outstanding Ending Balance, Weighted-Average Exercise Price Per Share	5.96
Outstanding, 1.17 — 26.00 [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise Price Per Share, Minimum	1.17
Exercise Price Per Share, Maximum	26
Granted, 1.51 — 1.51 [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise Price Per Share, Minimum	1.51
Exercise Price Per Share, Maximum	1.51
Canceled/Forfeited, 2.13 — 2.50 [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise Price Per Share, Minimum	2.13
Exercise Price Per Share, Maximum	2.50
Outstanding, 1.17 — 26.00 [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise Price Per Share, Minimum	1.17
Exercise Price Per Share, Maximum	$ 26

Subsequent Event - Additional I

Subsequent Event - Additional Information (Detail) - USD ($)	Apr. 11, 2019	Apr. 30, 2019	Mar. 31, 2019
Subsequent Event [Line Items]
Sale of common stock, description			The offering and private transaction, together the “Transactions”, closed on April 11, 2019.
Subsequent Event [Member]
Subsequent Event [Line Items]
Proceeds from sale of common stock	$ 0
Public Offering [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Sale of common stock	4,300,000
Private Transaction [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Sale of common stock	1,750,000
Transactions [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Costs and expenses	$ 245,000	$ 15,000
Transactions [Member] | Selling, General and Administrative Expense [Member]
Subsequent Event [Line Items]
Costs and expenses			$ 230,000