NRC (NRCG) Inactive 10-Q7 May 192019 Q1 Quarterly reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	Mar. 31, 2019	Apr. 30, 2019
Document and Entity Information [Abstract]
Entity Registrant Name	NRC GROUP HOLDINGS CORP.
Entity Central Index Key	0001703038
Trading Symbol	NRCG
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Type	10-Q
Document Period End Date	Mar. 31, 2019
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2019
Entity Filer Category	Accelerated Filer
Entity Ex Transition Period	false
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Common Stock, Shares Outstanding		36,902,544

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 17,917	$ 18,365
Receivables:
Trade, net of allowance for doubtful accounts of $1.7 million and $0.6 million, respectively	112,163	102,709
Other	1,138	1,112
Inventory	7,348	7,257
Prepaid expenses and other current assets	5,043	4,692
Total current assets	143,609	134,135
Property and equipment, net	133,288	122,565
Goodwill	51,417	51,417
Intangible assets, net of accumulated amortization of $36.4 million and $34.5 million, respectively	62,750	64,614
Other assets	3,034	3,396
Total assets	394,098	376,127
Current liabilities
Accounts payable	36,673	36,171
Accrued expenses	13,679	10,644
Accrued wages and benefits	4,215	4,858
Contingent consideration	3,317	2,470
Deferred revenue	7,171	1,199
Other current liabilities	1,650
Current portion of term loans	3,431	3,431
Current portion of equipment loan	419	737
Borrowings outstanding under revolving credit agreements	20,000	10,000
Accrued dividend on Series A convertible preferred stock	1,838	1,511
Total current liabilities	92,393	71,021
Contingent consideration, net of current portion	5,050	3,846
Term loans, net of current portion and deferred financing costs	329,631	330,104
Equipment loan, net of current portion	69	78
Asset retirement obligation	1,406	1,379
Other long-term liabilities	6,945	1,243
Total liabilities	435,494	407,671
Commitments and contingencies
Shareholders' Equity (Deficit)
Series A Convertible Preferred Stock, par value $0.0001; 5,000,000 shares authorized; 1,050,000 issued with a liquidation preference of $105,000 as of March 31, 2019 and December 31, 2018	102,967	102,967
Common stock, par value $0.0001; 200,000,000 shares authorized; 36,902,544 shares issued and outstanding as of March 31, 2019 and December 31, 2018	4	4
Additional paid in capital	11,246	13,084
Accumulated deficit	(149,522)	(141,062)
Accumulated other comprehensive loss	(6,091)	(6,537)
Total shareholders' equity (deficit)	(41,396)	(31,544)
Total liabilities and shareholders' equity	$ 394,098	$ 376,127

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Trade, net of allowance for doubtful accounts	$ 1,700	$ 600
Intangible assets, net of accumulated amortization	$ 36,400	$ 34,500
Series A convertible preferred stock, par value	$ 0.0001	$ 0.0001
Series A convertible preferred stock, shares authorized	5,000,000	5,000,000
Series A convertible preferred stock, shares issued	1,050,000	1,050,000
Liquidation preference	$ 105,000	$ 105,000
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	36,902,544	36,902,544
Common stock, shares outstanding	36,902,544	36,902,544

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Operating revenue	$ 100,494	$ 71,232
Costs and expenses
Operating expenses, including cost of revenue (exclusive of depreciation and amortization)	71,255	48,366
General and administrative expenses	16,893	10,395
Depreciation and amortization	9,012	6,459
Management fees		443
Acquisition expenses	447	1,222
Change in fair value of contingent consideration	2,051
Other expense, net	1,400	897
Total costs and expenses	101,058	67,782
Operating (loss) income	(564)	3,450
Other income (expenses)
Interest expense	(6,609)	(3,670)
Foreign currency transaction gain (loss)	91	(37)
Other income, net	176	15
Total other expenses, net	(6,342)	(3,692)
Loss before income taxes	(6,906)	(242)
Income tax expense	1,554	119
Net loss	(8,460)	(361)
Other comprehensive income (loss), net of tax
Foreign currency translation income	446	705
Total other comprehensive income	446	705
Comprehensive (loss) income	(8,014)	344
Net loss	(8,460)	(361)
Less dividend on Series A convertible preferred stock	(1,838)
Net loss attributable to common shareholders	$ (10,298)	$ (361)
Net loss per share, basic and diluted	$ (0.28)	$ (0.02)
Weighted average common shares outstanding, basic and diluted	36,902,544	21,873,680
Dividends declared per Series A convertible preferred share	$ 1.75

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity (Deficit) (Unaudited) - USD ($) $ in Thousands	Preferred Stock	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Total
Beginning Balance at Dec. 31, 2017		$ 2	$ 142,205	$ (93,805)	$ (5,303)	$ 43,099
Beginning Balance, Shares at Dec. 31, 2017		21,873,680
Net loss				(361)		(361)
Currency translation income					705	705
Ending Balance at Mar. 31, 2018		$ 2	142,205	(94,166)	(4,598)	43,443
Ending Balance, shares at Mar. 31, 2018		21,873,680
Beginning Balance at Dec. 31, 2018	$ 102,967	$ 4	13,084	(141,062)	(6,537)	(31,544)
Beginning Balance, Shares at Dec. 31, 2018	1,050,000	36,902,544
Net loss				(8,460)		(8,460)
Currency translation income					446	446
Series A convertible preferred stock dividend			(1,838)			(1,838)
Ending Balance at Mar. 31, 2019	$ 102,967	$ 4	$ 11,246	$ (149,522)	$ (6,091)	$ (41,396)
Ending Balance, shares at Mar. 31, 2019	1,050,000	36,902,544

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net loss	$ (8,460)	$ (361)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation of property and equipment	7,148	4,906
Amortization of intangible assets	1,864	1,540
Accretion of asset retirement obligation	27	13
Amortization of deferred financing costs	436	283
Bad debt expense	1,264	125
Change in fair value of contingent consideration	2,051
Deferred income tax provision		23
Realized gain from equipment sales or retirements	(324)
Changes in operating assets and liabilities, net of acquisitions:
Trade and other receivables	(10,745)	7,435
Inventories	(91)	(96)
Prepaid expenses	(180)	1,018
Other assets	123	(232)
Accounts payable and accrued expenses	(208)	(12,476)
Accrued wages and benefits	(643)	(2,222)
Deferred revenue	5,972	7,798
Other current liabilities including current income taxes	2,712	(184)
Other liabilities	(1,749)	(1,263)
Net cash (used in) provided by operating activities	(803)	6,307
Cash flows from investing activities:
Acquisition of business, net of cash acquired		(5,001)
Capital expenditures	(6,287)	(1,740)
Net cash used in investing activities:	(6,287)	(6,741)
Cash flows from financing activities:
Principal payments on term loans	(859)	(1,371)
Borrowings from revolving credit facilities	10,000	5,000
Principal payments on equipment loans	(328)	(393)
Payments on capital lease obligations	(752)
Cash dividend paid	(1,511)
Net cash provided by financing activities:	6,550	3,236
Effects of foreign exchange rates on cash and cash equivalents	92	705
Net (decrease) increase in cash and cash equivalents	(448)	3,507
Cash and cash equivalents, beginning of period	18,365	10,570
Cash and cash equivalents, end of period	17,917	14,077
Supplemental Information:
Cash interest paid	7,217	3,359
Cash income taxes paid		27
Noncash investing and financing Activities:
Equipment financed under capital lease obligations	9,505
Unpaid property and equipment	2,684
Series A convertible preferred stock dividend	$ 1,838

Description of Organization and

Description of Organization and Business Operations	3 Months Ended
Description of Organization and Business Operations	Mar. 31, 2019
Nature of Business [Abstract]
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS	NOTE 1 - DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS NRC Group Holdings Corp. (“NRCG,” and together with its subsidiaries, the “Company”) was originally formed on January 3, 2017 as a special purpose acquisition company (“SPAC”) under the name Hennessy Capital Acquisition Corp. III (“Hennessy Capital”). On October 17, 2018, Hennessy Capital consummated the acquisition (the “Business Combination”) of all of the issued and outstanding membership interests of NRC Group Holdings, LLC (“NRC Group”) from JFL-NRC-SES Partners, LLC (“JFL Partners”). Upon consummation of the Business Combination, Hennessy Capital changed its name to NRC Group Holdings Corp. NRCG is a global provider of a wide range of environmental, compliance and waste management services. The Company’s broad range of capabilities and global reach enable it to meet the critical, and often non-discretionary, needs of more than 5,000 customers across diverse end markets to ensure compliance with environmental, health and safety laws and regulations around the world. NRCG operates in four reportable business segments: (1) Domestic Environmental Services, (2) Sprint, (3) Domestic Standby Services and (4) International Services. The Domestic Environmental Services segment provides environmental and industrial services across the United States. The Sprint segment provides energy-related services and waste management and disposal services predominately to upstream energy customers concentrated in the Eagle Ford and Permian Basin regions of the Texas Shale Oil Fields (“Eagle Ford and Permian Basin”). The Domestic Standby Services segment provides commercial standby oil spill compliance and emergency response services in the United States and across North America. The International Services segment provides international standby oil spill, emergency response, specialty industrial and environmental solutions in seven countries. Through its domestic and international wholly-owned subsidiaries, the Company primarily provides these services to oil and gas, chemical, industrial and marine transportation clients in the United States and abroad. NRC Group On January 6, 2012, JFL-NRC Holdings, LLC (“NRC Holdings”) was formed under Delaware law by its sole member, JFL-NRC Partners, LLC (“NRC Partners”), for the purpose of acquiring National Response Corporation and its affiliated businesses, including, among others, NRC Environmental Services, SEACOR Response and SEACOR Environmental Products (collectively, “NRC”) from affiliates of SEACOR Holdings, Inc. (“SEACOR”). On March 16, 2012, NRC Holdings completed the acquisition (the “NRC Acquisition”) of all of the issued and outstanding stock of NRC from SEACOR. Prior to March 16, 2012, NRC Holdings did not engage in any business except for activities related to its formation. On May 5, 2015, SES Holdco, LLC (“SES Holdco”), a Texas limited liability company, was formed under Delaware law by its sole member, JFL-SES Partners, LLC (“SES Partners”), for the purpose of acquiring Sprint Energy Services, LLC (“SES”), a Texas limited liability company. On May 5, 2015, SES Holdco completed the acquisition (the “SES Acquisition”) of all the issued and outstanding stock of SES. Sprint Karnes County Disposal LLC (“SKCD”), a Texas limited liability company, is a wholly-owned subsidiary of SES. SKCD received an oilfield waste disposal permit from the Railroad Commission of Texas (“RRC”) on December 31, 2015. NRC Partners and SES Partners are ultimately majority-owned by funds advised by J.F. Lehman and Company (“JFL”), a leading middle-market private equity firm focused on the defense, aerospace, maritime, government and environmental sectors. In June 2018, NRC Partners and SES Partners formed JFL Partners, a Delaware limited liability company, and contributed their respective equity interests in NRC Holdings and SES Holdco to JFL Partners. JFL Partners formed NRC Group and contributed all of its equity interest in NRC Holdings and SES Holdco to NRC Group. On June 11, 2018, NRC Group made a dividend payment of approximately $86.5 million to J.F. Lehman & Company, LLC (“JFLCo”) (the “Dividend Recapitalization”). Following the Dividend Recapitalization, NRC Group became the holding company for NRC Holdings and SES Holdco.

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
Summary of Significant Accounting Policies	Mar. 31, 2019
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation The accompanying unaudited interim consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”) for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X of the Exchange Act. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, the unaudited interim consolidated financial statements reflect all adjustments, which include only normal recurring adjustments necessary for the fair statement of the balances and results for the periods presented. They may not include all of the information and footnotes required by GAAP for complete financial statements. Therefore, these financial statements should be read in conjunction with the Company’s audited financial statements and notes thereto for the year ended December 31, 2018, which were included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018 filed with the Securities and Exchange Commission (the “SEC”) on March 25, 2019 (the “2018 Annual Report”). The results of operations for any interim periods are not necessarily indicative of the results that may be expected for the entire fiscal year or any other interim period. Certain prior period financial information has been recast to reflect the current year’s presentation. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions, which are evaluated on an ongoing basis, that affect the amounts reported in the Company’s consolidated financial statements and accompanying notes. Management bases its estimates on historical experience and on various other assumptions it believes to be reasonable at the time under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities, disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates. Significant Accounting Policies There have been no material changes in the Company’s significant accounting policies to those previously disclosed in the 2018 Annual Report. Fair Value The fair value of an asset or liability is the price that would be received to sell an asset or transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The Company utilizes a fair value hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value and defines three levels of inputs that may be used to measure fair value . ● Level 1 - uses quoted prices in active markets for identical assets or liabilities. ● Level 2 - uses observable inputs other than quoted prices in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. ● Level 3 - uses one or more significant inputs that are unobservable and supported by little or no market activity, and that reflect the use of significant management judgment. The Company’s only financial instruments carried at fair value, with changes in fair value flowing through current earnings, consist of contingent consideration liabilities recorded in conjunction with business combinations, as follows (in thousands): Fair Value Measurement at Reporting Date Using Balance as of Quoted Significant Significant Contingent consideration - current $ 3,317 $ - $ - $ 3,317 Contingent consideration - long-term 5,050 - - 5,050 Total liabilities measured at fair value $ 8,367 $ - $ - $ 8,367 Balance as of Quoted Significant Significant Contingent consideration - current $ 2,470 $ - $ - $ 2,470 Contingent consideration - long-term 3,846 - - 3,846 Total liabilities measured at fair value $ 6,316 $ - $ - $ 6,316 There were no transfers made among the three levels in the fair value hierarchy for the three months ended March 31, 2019 and 2018. The following table presents additional information about Level 3 liabilities measured at fair value. Both observable and unobservable inputs may be used to determine the fair value of positions that the Company has classified within the Level 3 category. As a result, the unrealized gains and losses for liabilities within the Level 3 category may include changes in fair value that were attributable to both observable (e.g., changes in market interest rates) and unobservable (e.g., changes in unobservable long-dated volatilities) inputs. Changes in Level 3 liabilities measured at fair value for the three months ended March 31, 2019 and 2018 (in thousands): Contingent consideration - December 31, 2017 $ 4,132 Fair value of contingent consideration - acquisition of Clean Line (March 28, 2018) 507 Contingent consideration - March 31, 2018 $ 4,639 Contingent consideration - December 31, 2018 $ 6,316 Change in fair value of contingent consideration (recognized in earnings) 2,051 Contingent consideration - March 31, 2019 $ 8,367 The fair value of the Company’s contingent consideration liabilities recorded as part of the acquisitions of Enpro Holdings Group (“Enpro”) in April 2016, Clean Line Waste Water Solutions Limited (“Clean Line”) in March 2018 and Quail Run Services, LLC (“Quail Run”) in October 2018, has been classified within Level 3 in the fair value hierarchy. The contingent consideration represents the estimated fair value of future payments due to the sellers of Enpro, Clean Line and Quail Run based on each company’s achievement of annual earnings targets in certain years and other events considered in certain transaction documents. The initial fair values of the contingent consideration were calculated through the use of either Monte Carlo simulation or modified Black-Scholes analyses based on earnings projections for the respective earn-out periods, corresponding earnings thresholds, and approximate timing of payments as outlined in the purchase agreements. The analyses utilized the following assumptions: (i) expected term; (ii) risk-adjusted net sales or earnings; (iii) risk-free interest rate; and (iv) expected volatility of earnings. Estimated payments, as determined through the respective models, were further discounted by a credit spread assumption to account for credit risk. The contingent consideration is revalued to fair value each period, and any increase or decrease is recorded in operating income (loss). The fair value of the contingent consideration may be impacted by certain unobservable inputs, most significantly with regard to discount rates, expected volatility and historical and projected performance. Significant changes to these inputs in isolation could result in a significantly different fair value measurement. The carrying value of cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities approximates fair value because of the short-term nature of these instruments. The carrying value of the Company’s term loans and revolving credit facilities, including the current portion, approximate fair value as the terms and conditions of these loans are consistent with comparable market debt issuances. The carrying value of the equipment loans approximate fair value as the underlying interest rates approximate current market rates for all periods presented (Level 2). The Company measures certain assets at fair value on a non-recurring basis, generally annually or when events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. These assets include goodwill and other intangible assets. See Note 5. A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. Trade Receivables and Allowance for Doubtful Accounts Customers are domestic and international shippers, major oil companies, independent exploration and production companies, pipeline and transportation companies, power generating operators, industrial companies, airports and state and local government agencies. All customers are granted credit on a short-term basis and related credit risks are considered minimal. The Company routinely reviews its trade receivables and makes provisions for probable doubtful accounts based on the credit worthiness of the parties involved, historical collection information and economic conditions. However, those provisions are estimates and actual results could differ from those estimates and those differences may be material. Trade receivables that are deemed uncollectible are removed from accounts receivable and from the allowance for doubtful accounts when collection efforts have been exhausted. The Company records allowances for doubtful accounts receivable based upon expected collectability. The reserve is generally established based upon an analysis of its aged receivables. Additionally, if necessary, a specific reserve for individual accounts is recorded when the Company becomes aware of a customer’s inability to meet its financial obligations, such as in the case of a bankruptcy filing or deterioration in the customer’s operating results or financial position. The Company also regularly reviews the allowance by considering factors such as historical collections experience, credit quality, age of the accounts receivable balance and current economic conditions that may affect a customer’s ability to pay. If actual bad debts differ from the reserves calculated, the Company records an adjustment to bad debt expense in the period in which the difference occurs. The following table provides a roll forward of the allowance for doubtful accounts for the three months ended March 31, 2019 and 2018 (in thousands): Three Months Ended 2019 2018 Allowance for doubtful accounts, beginning of period $ 627 $ 895 Bad debt expense 1,264 125 Write-offs, net of recoveries, for bad debt (154 ) (25 ) Allowance for doubtful accounts, end of period $ 1,737 $ 995 Asset Retirement Obligations Under the terms of its oilfield waste disposal permit for the SKCD facility, the Company is required to perform certain necessary closure activities as required by the RRC. The SKCD facility consists of multiple active and planned disposal pits within the facility, each of which must be closed once they have reached their permitted capacity for waste. Closure of the disposal pit entails capping the pit with a high-density polyethylene liner and topsoil amongst other environmental remediation procedures. The Company records an asset retirement obligation (“ARO”) for disposal pits in the year they become active and begin receiving oilfield waste, the balance of which represents the estimated amount the Company will incur to close each disposal pit in the landfill. The liability is initially recorded at fair value with the corresponding cost capitalized as a component of property and equipment within the Consolidated Balance Sheet. The liability is accreted to its present value each period, and the capitalized costs are amortized on a straight-line basis over the expected period of operation of the respective disposal pit. The Company determines the ARO by calculating the present value of estimated future cash flows related to the liability. Estimating the future ARO requires management to make estimates and judgments regarding timing and existence of a liability, as well as the necessary cost to achieve adequate closure of each pit. Inherent in the fair value calculation are numerous assumptions and judgments including the ultimate costs, inflation factors, credit adjusted discount rates, timing of settlement and changes in the legal, regulatory, environmental and political environments. To the extent future revisions to these assumptions impact the fair value of the existing ARO liability, a corresponding adjustment is made to the related asset. In each of December 2017 and April 2018, the Company established an ARO liability and associated asset in the amount of $0.65 million and $0.65 million, respectively. The Company recorded accretion expense of $27,000 and $13,000 during the three months ended March 31, 2019 and 2018, respectively. As of March 31, 2019 and December 31, 2018, the ARO liability was $1.4 million and $1.4 million, respectively. These ARO liabilities relate to the future closure costs associated with Disposal Pit #1 and Disposal Pit #2, respectively. Disposal Pit #1 and Disposal Pit #2 are the Company’s only active cells in the SKCD facility. This obligation represents the net present value of the estimated future payout of approximately $1.6 million, which is expected to be incurred by the Company upon closure of Disposal Pit #1 in 2020 and Disposal Pit # 2 in 2019 or 2020. Recent Accounting Pronouncements Standards implemented In August 2018, the SEC adopted the final rule under SEC Release No. 33-10532, Disclosure Update and Simplification Standards to be implemented In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) Revenue from Contracts with Customers: (Topic 606) Identifying Performance Obligations and Licensing In February 2016 the FASB issued ASU No. 2016-02 , Leases (Topic 842) In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820), - Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement

Business Acquisitions

Business Acquisitions	3 Months Ended
Business Acquisitions	Mar. 31, 2019
Business Combinations [Abstract]
BUSINESS ACQUISITIONS	3. BUSINESS ACQUISITIONS On March 28, 2018, the Company and Clean Line entered into an agreement for the sale and purchase of the entire issued share capital of Clean Line for approximately $5.0 million, net of cash acquired, and exclusive of deferred consideration and a potential $3.9 million (£3.0 million) in earn out consideration, discussed below. Clean Line is a leading provider of environmental, industrial and emergency response services in the United Kingdom. Clean Line is headquartered in Liverpool, England. Goodwill related to Clean Line is not deductible for tax purposes. The following table summarizes the final allocation of the purchase price to the assets acquired and liabilities assumed for the Clean Line acquisition (in thousands): Trade receivable $ 1,590 Other current assets 188 Property and equipment 1,908 Intangible assets 1,104 Goodwill 1,865 Accounts payable and accrued expenses (1,147 ) Contingent liability (507 ) Cash purchase price, net of cash acquired $ 5,001 For the three months ended March 31, 2018, the Company recorded $1.1 million in transaction costs related to the acquisition of Clean Line, which are recorded in Acquisition Expense in the Consolidated Statements of Operations and Comprehensive Income (Loss).

Property and Equipment

Property and Equipment	3 Months Ended
Property and Equipment	Mar. 31, 2019
Property, Plant and Equipment [Abstract]
PROPERTY AND EQUIPMENT	4. PROPERTY AND EQUIPMENT Property and equipment, net consists of the following as of March 31, 2019 and December 31, 2018 (in thousands): March 31, December 31, 2019 2018 Vessels and equipment $ 34,217 $ 35,553 Vehicles and trailers 60,602 50,458 Machinery and equipment 111,250 109,961 Office equipment and fixtures 8,681 8,549 Landfill 18,687 18,525 Leasehold improvements 6,399 6,490 Computer systems/license fees 3,513 3,527 Construction in progress 13,496 7,697 256,845 240,760 Less: Accumulated depreciation (123,557 ) (118,195 ) Property and equipment, net $ 133,288 $ 122,565 For the three months ended March 31, 2019 and 2018, the Company recognized depreciation expense of $7.1 million and $4.9 million, respectively.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	3 Months Ended
Goodwill and Intangible Assets	Mar. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND INTANGIBLE ASSETS	5. GOODWILL AND INTANGIBLE ASSETS The table below summarizes the Company’s finite-lived intangible assets and indefinite-lived trademarks as of March 31, 2019 and December 31, 2018 (in thousands): Weighted average remaining March 31, 2019 Useful Lives life Intangible Accumulated Net (Years) (Years) Assets Amortization Balance Customer Relationships 8 - 20 9.9 $ 70,896 (20,249 ) $ 50,647 Tradenames/Trademarks 2 - 25 10.8 13,148 (6,700 ) 6,448 Trademarks Indefinite N/A 837 - 837 Permits/License 3-10 8.8 13,458 (8,690 ) 4,768 Non-compete Agreements 5 - 6 0.7 856 (806 ) 50 $ 99,195 $ (36,445 ) $ 62,750 Weighted average remaining December 31, 2018 Useful Lives life Intangible Accumulated Net (Years) (Years) Assets Amortization Balance Customer Relationships 8 - 20 10.1 $ 70,896 $ (18,939 ) $ 51,957 Tradenames/Trademarks 2 - 25 10.7 13,148 (6,378 ) 6,770 Trademarks Indefinite N/A 837 - 837 Permits/License 3-10 9.1 13,458 (8,491 ) 4,967 Non-compete Agreements 5 - 6 0.8 856 (773 ) 83 $ 99,195 $ (34,581 ) $ 64,614 The intangible assets are being amortized over their respective original useful lives, which range from 2 to 25 years. The Company recorded approximately $1.9 million and $1.5 million of amortization expense related to the above intangible assets for the three months ended March 31, 2019 and 2018, respectively. There were no impairment charges recorded during the three months ended March 31, 2019 and 2018. The following table shows the remaining amortization expense associated with amortizable intangible assets as of March 31, 2019 (in thousands): Year ended December 31, 2019 (excluding the three months ended March 31, 2019) $ 5,702 Year ended December 31, 2020 7,177 Year ended December 31, 2021 6,751 Year ended December 31, 2022 6,576 Year ended December 31, 2023 6,261 Thereafter 29,446 $ 61,913 The table below summarizes goodwill by reportable segment at March 31, 2019 and December 31, 2018 (in thousands): March 31, December 31, 2019 2018 Domestic Environmental Services $ 30,567 $ 30,567 International Services 1,865 1,865 Sprint Segment 18,985 18,985 Total Goodwill $ 51,417 $ 51,417 Domestic Environmental Services, International Services and Sprint Segment Goodwill The Company performed a quantitative test of goodwill at year end for the years ended December 31, 2018, 2017 and 2016. The Company evaluated goodwill at the segment level for the International Services segment as it does not have components below the segment level that meet the definition of a reporting unit. Goodwill for the Domestic Environmental Services segment is evaluated at the segment level as the reporting units are economically similar. The Sprint Segment is evaluated at the reporting unit level. The Company estimates the fair value of its reporting units using an income approach based on the present value of expected future cash flows, including terminal value, utilizing a market-based weighted average cost of capital (“WACC”) determined separately for each reporting unit. The determination of fair value involves the use of significant estimates and assumptions, including revenue growth rates driven by future commodity prices and volume expectations, operating margins, capital expenditures, working capital requirements, tax rates, terminal growth rates, discount rates and synergistic benefits available to market participants. The Company did not record impairment charges related to goodwill in the three months ended March 31, 2019 and 2018.

Long-Term Debt

Long-Term Debt	3 Months Ended
Long-Term Debt	Mar. 31, 2019
Long-term Debt, Unclassified [Abstract]
LONG-TERM DEBT	6. LONG-TERM DEBT As of March 31, 2019 and December 31, 2018 short-term and long-term debt consisted of the following (in thousands): March 31, December 31, 2019 2018 Term Loan principal $ 340,515 $ 341,372 Less: Unamortized deferred financing fees (7,453 ) (7,837 ) Less: Current portion (3,431 ) (3,431 ) Term loans, net of current portion and deferred financing costs 329,631 330,104 Revolver (current and long-term) 20,000 10,000 Term loans, net of current portion and deferred financing costs, and Revolver $ 349,631 $ 340,104 NRC and SES, NRC US Holding Company, LLC (a wholly owned subsidiary of NRC) and SES (collectively, the “Borrowers”), NRC Group, as parent, and the other guarantors party thereto entered into a credit facility (the “Credit Facility”) on June 11, 2018, which included a $308.0 million term loan (the “Original Term Loan”) and a $40.0 million revolving credit facility (the “Revolver”). The Borrowers and the other guarantors (including NRC Group) entered into a joinder agreement (the “Joinder Agreement”) on October 2, 2018, pursuant to which the Borrowers increased the Original Term Loan in the amount of $35.0 million (the “Incremental Term Loan,” and together with the Original Term Loan, the “Term Loan”) and the amount available under the Revolver was reduced by $5 million to $35.0 million. On March 15, 2019, the Company entered into an incremental revolving credit commitment of $10.0 million under the Credit Facility, bringing its total revolving credit commitments under the Revolver up to $45.0 million. The Revolver matures on June 11, 2023 and the Term Loan matures on June 11, 2024, in each case unless otherwise extended in accordance with the terms of the Credit Facility. The Borrowers may also incur incremental revolving and term loan commitments pursuant to and in accordance with the terms of the Credit Facility. During the three months ended March 31, 2019, the Company made a principal payment on the Term Loan of $857,719. Outstanding loans under the Credit Facility will bear interest at the Borrowers’ option at either the Eurodollar rate plus 5.25% or the base rate plus 4.25% per year. In addition, the Borrowers will be charged (1) a commitment fee in an amount equal to 0.50% per annum times the average daily undrawn portion of the Revolver, (2) a letter of credit fee in an amount equal to the applicable margin then in effect for revolving loans bearing interest at the Eurodollar Rate times the average aggregate daily maximum amount available to be drawn under all outstanding letters of credit, (3) a letter of credit fronting fee in an amount equal to 0.125% times the average aggregate daily maximum amount available to be drawn under all letters of credit and (4) certain other fees as agreed between the parties. The interest rate applicable to the Term Loan and Revolver under the Credit Facility at March 31, 2019 is approximately 7.95%. As of March 31, 2019 and December 31, 2018, the Company was in compliance with the covenants of all of its debt agreements.

Income Taxes

Income Taxes	3 Months Ended
Income Taxes	Mar. 31, 2019
Income Tax Disclosure [Abstract]
INCOME TAXES	7. INCOME TAXES The Company’s effective income tax rate for the three months ended March 31, 2019 was 22.5% as compared to 49.2% for the three months ended March 31, 2018. The effective tax rate for the three months ended March 31, 2019 reflects a discrete charge to adjust income taxes payable associated with certain of the Company’s subsidiaries to reflect the Company’s consolidated income tax liability. The Company has evaluated its income tax positions and determined that no material uncertain tax positions existed at March 31, 2019. The Company does not expect a significant change in its unrecognized tax benefits within the next twelve months. The Company files income tax returns in the U.S. Federal and various state, local and foreign jurisdictions. For Federal income tax purposes, the 2015 through 2017 tax years remain open for examination by the tax authorities under the normal three-year statute of limitations. For state tax purposes, the 2014 through 2017 tax years remain open for examination by the tax authorities under a four-year statute of limitations. For foreign income tax purposes, the tax years 2013 through 2017 remain open for examination by the tax authorities under the various statute of limitation year requirement by that specific local country’s tax laws.

Related Party Transactions

Related Party Transactions	3 Months Ended
Related Party Transactions	Mar. 31, 2019
Related Party Transactions [Abstract]
RELATED PARTY TRANSACTIONS	8. RELATED PARTY TRANSACTIONS Related Party Transactions During the three months ended March 31, 2019 and 2018, the Company derived approximately $8,000 and $27,000 in revenues from related entities, respectively. The Company paid approximately $6,000 and $3,000 for waste hauling services to the same related entities in the three months ended March 31, 2019 and 2018, respectively. Prior to the Business Combination, the Company had a management agreement with JFLCo whereby JFLCo provided services, including, among other things, cash flow planning/forecasting and merger/acquisition target identification. The Company incurred approximately $0.4 million in management fees for the three months ended March 31, 2018. No management fees were incurred for the three months ended March 31, 2019. These expenses are reflected as Management Fees on the Company’s Consolidated Statements of Operations and Comprehensive Income (Loss).

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
Commitments and Contingencies	Mar. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	9. COMMITMENTS AND CONTINGENCIES Letters of Credit and Guarantees Under the terms of the Company’s oilfield waste disposal permit for the SKCD facility, financial security must be provided to the RRC in an amount necessary to close the facility. The Company has secured letters of credit from third-party financial institutions in the amount of $3.3 million as required by the terms of the permit, which have been pledged to the RRC to cover potential closure costs. In addition, the Company has secured letters of credit from third-party financial institutions in the amount of $1.6 million as required by the terms of the permit, which have been pledged to cover potential closure costs of the Company’s two transfer storage and disposal facilities in Vermont and Maine, as well as other corporate matters. The letters of credit are renewed annually. Litigation In the normal course of business, the Company and its subsidiaries are involved in various claims and legal proceedings. While the ultimate resolution of these matters has yet to be determined, the Company does not believe that any unfavorable outcomes will have a material adverse effect on the Company’s consolidated financial position or results of operations. At March 31, 2019 and December 31, 2018, the Company had no reserves recorded for any outstanding litigation, claim or assessment. Leases Total rent expense for the Company’s operating leases for the three months ended March 31, 2019 and 2018 was $2.3 million and $2.0 million, respectively. As of March 31, 2019, future minimum lease payments in the years ended December 31 that have a remaining term in excess of one year are as follows (in thousands): Capital Leases Operating Leases 2019 (excluding the three months ended March 31, 2019) $ 1,547 $ 7,051 2020 2,063 8,318 2021 2,063 5,805 2022 1,972 4,470 2023 1,973 3,738 Thereafter - 4,032 Total minimum payments $ 9,618 $ 33,414 Less: imputed interest 1,100 Present value of minimum capital lease payments $ 8,518 The present value of minimum lease payments is included in Other current liabilities and Other long-term liabilities in the Consolidated Balance Sheets.

Segment Data and Geographical D

Segment Data and Geographical Data	3 Months Ended
Segment Data and Geographical Data	Mar. 31, 2019
Segment Reporting [Abstract]
SEGMENT DATA AND GEOGRAPHICAL DATA	10. SEGMENT DATA AND GEOGRAPHICAL DATA The Company’s operations are managed within four operating segments: Domestic Standby Services, Domestic Environmental Services, International Services and Sprint. Costs not managed through the Company’s operating segments described above are recorded as “Corporate Items.” Corporate Items represents certain central services that are not allocated to the Company’s operating segments for internal reporting purposes and include selling, general and administrative expenses such as legal, accounting and other items of a general corporate nature that are not allocated to the Company’s operating segments. These segments have been selected based on the Company’s Chief Operating Decision Maker (“CODM”) assessment of resources allocation and performance. The Company considers its Chief Executive Officer to be its CODM. The CODM evaluates the performance of our segments based on revenue and income measures which include operating profit (exclusive of depreciation, amortization and certain other charges). Operating profit (exclusive of depreciation, amortization and certain other charges) is defined as Operating revenue, less Operating expenses, including cost of revenue, and General and administrative expenses. The classification of certain prior period Operating expenses, including costs of revenue (excluding depreciation and amortization) and certain prior period General and administrative expenses have been recast to reflect the current period presentation. The following table provides segment data for the three months ended March 31, 2019 and 2018 (in thousands): Domestic Domestic Standby Environmental Corporate Services Services International Sprint Items Total Three Months Ended March 31, 2019 Operating revenue $ 10,393 $ 60,866 $ 8,147 $ 21,088 $ - $ 100,494 Operating expenses, including cost of revenue (excluding depreciation, amortization and certain other expenses) 5,223 51,259 5,946 8,827 - 71,255 General and administrative expenses 949 7,199 897 3,751 4,097 16,893 Operating profit (exclusive of depreciation, amortization and certain other expenses) 4,221 2,408 1,304 8,510 (4,097 ) 12,346 Goodwill - 30,567 1,865 18,985 - 51,417 Assets 82,891 168,270 19,312 136,064 (12,439 ) 394,098 2018 Operating revenue $ 8,972 $ 40,857 $ 4,793 $ 16,610 $ - $ 71,232 Operating expenses, including cost of revenue (excluding depreciation, amortization and certain other expenses) 3,689 33,806 3,344 7,527 - 48,366 General and administrative expenses 789 4,580 702 2,611 1,713 10,395 Operating profit (exclusive of depreciation, amortization and certain other expenses) 4,494 2,471 747 6,472 (1,713 ) 12,471 Goodwill - 26,070 1,864 10,935 - 38,869 Assets 83,317 123,927 33,324 87,709 (28,544 ) 299,733 The following table presents a reconciliation of Operating profit (exclusive of depreciation, amortization and certain other charges) to net loss (in thousands): Three Months Ended 2019 2018 Operating profit (exclusive of depreciation and amortization): Domestic Standby Services $ 4,221 $ 4,494 Domestic Environmental Services 2,408 2,471 International 1,304 747 Sprint 8,510 6,472 Corporate (4,097 ) (1,713 ) Total Operating profit (exclusive of depreciation, amortization and certain other charges) 12,346 12,471 Less: Depreciation and amortization 9,012 6,459 Management fees - 443 Acquisition expenses 447 1,222 Change in fair value of contingent consideration 2,051 - Other expense, net 1,400 897 Operating (loss) income (564 ) 3,450 Total other expenses, net (6,342 ) (3,692 ) Loss before income taxes (6,906 ) (242 ) Income tax expense 1,554 119 Net loss $ (8,460 ) $ (361 ) The following tables provides revenue by geographic location with each segment for the three months ended March 31, 2019 and 2018 (in thousands): For the Three Months Ended March 31, 2019 Domestic Domestic Standby Environmental Services Services International Sprint Total North America $ 9,934 $ 60,866 $ - $ 21,088 $ 91,888 Latin America and Caribbean 459 - - - 459 EMEA - - 8,140 - 8,140 Asia Pacific - - 7 - 7 Total operating revenue $ 10,393 $ 60,866 $ 8,147 $ 21,088 $ 100,494 % of Total 10 % 61 % 8 % 21 % 100 % For the Three Months Ended March 31, 2018 Domestic Domestic Standby Environmental Services Services International Sprint Total North America $ 8,260 $ 40,857 $ - $ 16,610 $ 65,727 Latin America and Caribbean 712 - - - 712 Europe, Middle East and Africa (“EMEA”) - - 4,787 - 4,787 Asia Pacific - - 6 - 6 Total operating revenue $ 8,972 $ 40,857 $ 4,793 $ 16,610 $ 71,232 % of Total 13 % 57 % 7 % 23 % 100 % For the three months ended March 31, 2019 and 2018, there was no single customer responsible for 10% or more of the Company’s operating revenue.

Stockholders' Equity (Deficit)

Stockholders' Equity (Deficit)	3 Months Ended
Stockholders' Equity (Deficit)	Mar. 31, 2019
Equity [Abstract]
STOCKHOLDERS’ EQUITY (DEFICIT)	11. STOCKHOLDERS’ EQUITY (DEFICIT) Common Stock The Company is authorized to issue up to 200,000,000 shares of Common Stock. Common Stock has voting rights of one vote for each share of Common Stock. The Company did not issue common stock during the three months ended March 31, 2019 and March 31, 2018. Series A Convertible Cumulative Preferred Stock The Company is authorized to issue up to 5,000,000 shares of Preferred Stock, par value $0.0001, 1,050,000 shares of which have been designated as Series A Convertible Cumulative Preferred Stock (the “Series A Convertible Preferred Stock”) and the remaining 3,950,000 of which are undesignated. On March 29, 2019, the Company declared a cash dividend of $1.75 per share on all of the issued and outstanding shares of the Company’s Series A Convertible Preferred Stock, in accordance with the terms and conditions of the Certificate of Designations, Preferences, Rights and Limitations of 7.00% Series A Convertible Cumulative Preferred Stock of NRC Group Holdings Corp. A dividend of $1.8 million was accrued as of March 31, 2019 and was subsequently paid on April 15, 2019. Share Based Payments During fiscal year 2018, the Company adopted the NRC Group Holdings Corp. 2018 Equity and Incentive Compensation Plan (the “Plan”). There are 3,000,000 shares reserved under the plan for issuance of share-based payments. As of March 31, 2019 and December 31, 2018, no awards have been granted under this plan. On April 5, 2019 the Company granted 831,705 restricted stock units and 150,000 stock options under the Plan to certain directors, officers and employees of the Company. The awards granted under the Plan are subject to service-based vesting requirements and expense will be recognized over the vesting period.

Net Income (Loss) Per Share

Net Income (Loss) Per Share	3 Months Ended
Net Income (Loss) Per Share	Mar. 31, 2019
Net Income Loss Per Share [Abstract]
NET INCOME (LOSS) PER SHARE	12. NET INCOME (LOSS) PER SHARE In calculating earnings (loss) per share, the Company retrospectively applied the effects of the Business Combination. Basic net income (loss) per common share (“EPS”) is calculated by dividing net income (loss) by the weighted average number of common shares outstanding. Diluted net income (loss) per common share is computed similar to basic net income (loss) per common share except that it reflects the potential dilution that could occur if dilutive securities or other obligations to issue Common Stock were exercised or converted into Common Stock. The following securities were not included in the diluted net loss per share calculation because their effect was anti-dilutive as of the periods presented (in thousands): Three Months Ended 2019 2018 Series A convertible preferred stock 1,050,000 - Common stock warrants - equity treatment 19,248,741 - Potentially dilutive securities 20,298,741 -

Subsequent Events

Subsequent Events	3 Months Ended
Subsequent Events	Mar. 31, 2019
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	13. SUBSEQUENT EVENTS On March 15, 2019 the Company entered into a definitive asset purchase agreement with OIT, Inc. (“OIT”), an environmental services provider including services related to thermal treatment of non-hazardous petroleum contaminated soils, absorbent pads and sludges, and the treatment of Per- and Polyfluoroalkyl substances. The transaction closed on April 26, 2019. The Company purchased the assets and business of OIT for an initial cash purchase price of $6.0 million paid at closing, plus an additional $2.0 million deferred consideration payable in cash, common stock of the Company or a combination of the two, and up to an additional $5.0 million in earn-out payments payable in cash, common stock of the Company or a combination of the two over the next three years based on certain financial milestones. The acquisition will be accounted for as a business combination using the acquisition method of accounting in accordance with FASB ASC Topic 805, which will establish a new basis of accounting for all identifiable assets acquired and liabilities assumed at fair value as of the date control is obtained. In addition, pursuant to the Purchase Agreement, dated as of June 25, 2018, as amended on July 12, 2018, between JFL Partners and Hennessy Capital Acquisition Corp III (now known as NRC Group Holdings Corp.), the closing of the OIT transaction has triggered a payment obligation by the Company of $10.0 million to JFL Partners, which payment can be made, at the election of the Company’s board of directors, in cash, common stock of the Company or a combination of the two. Pursuant to the terms of the Purchase Agreement, the Company may also be obligated to pay to JFL Partners additional consideration of up to $25.0 million (payable in cash, shares of Company common stock or any combination thereof, at the Company’s option) to the extent certain financial performance metrics are achieved by the OIT business during calendar years 2019 and 2020. The full $25.0 million would be payable if the OIT business’s normalized earnings before interest, taxes, depreciation and amortization exceeds $10.0 million in either calendar year, and no payment would be due unless the OIT business achieves normalized earnings before interest, taxes, depreciation and amortization of more than $6.0 million in either calendar year. On May 1, 2019, the Company received a commitment from HSBC Bank USA, N.A., to provide an incremental revolving credit commitment of an additional $15.0 million under the Company’s existing credit facility. The commitment is subject to the execution and delivery of definitive credit documents and other customary conditions and, if consummated, would increase the Company’s aggregate revolving credit commitments under its existing credit facility to $60.0 million.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
Summary of Significant Accounting Policies (Policies)	Mar. 31, 2019
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited interim consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”) for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X of the Exchange Act. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, the unaudited interim consolidated financial statements reflect all adjustments, which include only normal recurring adjustments necessary for the fair statement of the balances and results for the periods presented. They may not include all of the information and footnotes required by GAAP for complete financial statements. Therefore, these financial statements should be read in conjunction with the Company’s audited financial statements and notes thereto for the year ended December 31, 2018, which were included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018 filed with the Securities and Exchange Commission (the “SEC”) on March 25, 2019 (the “2018 Annual Report”). The results of operations for any interim periods are not necessarily indicative of the results that may be expected for the entire fiscal year or any other interim period. Certain prior period financial information has been recast to reflect the current year’s presentation.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions, which are evaluated on an ongoing basis, that affect the amounts reported in the Company’s consolidated financial statements and accompanying notes. Management bases its estimates on historical experience and on various other assumptions it believes to be reasonable at the time under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities, disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates.
Significant Accounting Policies	Significant Accounting Policies There have been no material changes in the Company’s significant accounting policies to those previously disclosed in the 2018 Annual Report.
Fair Value	Fair Value The fair value of an asset or liability is the price that would be received to sell an asset or transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The Company utilizes a fair value hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value and defines three levels of inputs that may be used to measure fair value . ● Level 1 - uses quoted prices in active markets for identical assets or liabilities. ● Level 2 - uses observable inputs other than quoted prices in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. ● Level 3 - uses one or more significant inputs that are unobservable and supported by little or no market activity, and that reflect the use of significant management judgment. The Company’s only financial instruments carried at fair value, with changes in fair value flowing through current earnings, consist of contingent consideration liabilities recorded in conjunction with business combinations, as follows (in thousands): Fair Value Measurement at Reporting Date Using Balance as of Quoted Significant Significant Contingent consideration - current $ 3,317 $ - $ - $ 3,317 Contingent consideration - long-term 5,050 - - 5,050 Total liabilities measured at fair value $ 8,367 $ - $ - $ 8,367 Balance as of Quoted Significant Significant Contingent consideration - current $ 2,470 $ - $ - $ 2,470 Contingent consideration - long-term 3,846 - - 3,846 Total liabilities measured at fair value $ 6,316 $ - $ - $ 6,316 There were no transfers made among the three levels in the fair value hierarchy for the three months ended March 31, 2019 and 2018. The following table presents additional information about Level 3 liabilities measured at fair value. Both observable and unobservable inputs may be used to determine the fair value of positions that the Company has classified within the Level 3 category. As a result, the unrealized gains and losses for liabilities within the Level 3 category may include changes in fair value that were attributable to both observable (e.g., changes in market interest rates) and unobservable (e.g., changes in unobservable long-dated volatilities) inputs. Changes in Level 3 liabilities measured at fair value for the three months ended March 31, 2019 and 2018 (in thousands): Contingent consideration - December 31, 2017 $ 4,132 Fair value of contingent consideration - acquisition of Clean Line (March 28, 2018) 507 Contingent consideration - March 31, 2018 $ 4,639 Contingent consideration - December 31, 2018 $ 6,316 Change in fair value of contingent consideration (recognized in earnings) 2,051 Contingent consideration - March 31, 2019 $ 8,367 The fair value of the Company’s contingent consideration liabilities recorded as part of the acquisitions of Enpro Holdings Group (“Enpro”) in April 2016, Clean Line Waste Water Solutions Limited (“Clean Line”) in March 2018 and Quail Run Services, LLC (“Quail Run”) in October 2018, has been classified within Level 3 in the fair value hierarchy. The contingent consideration represents the estimated fair value of future payments due to the sellers of Enpro, Clean Line and Quail Run based on each company’s achievement of annual earnings targets in certain years and other events considered in certain transaction documents. The initial fair values of the contingent consideration were calculated through the use of either Monte Carlo simulation or modified Black-Scholes analyses based on earnings projections for the respective earn-out periods, corresponding earnings thresholds, and approximate timing of payments as outlined in the purchase agreements. The analyses utilized the following assumptions: (i) expected term; (ii) risk-adjusted net sales or earnings; (iii) risk-free interest rate; and (iv) expected volatility of earnings. Estimated payments, as determined through the respective models, were further discounted by a credit spread assumption to account for credit risk. The contingent consideration is revalued to fair value each period, and any increase or decrease is recorded in operating income (loss). The fair value of the contingent consideration may be impacted by certain unobservable inputs, most significantly with regard to discount rates, expected volatility and historical and projected performance. Significant changes to these inputs in isolation could result in a significantly different fair value measurement. The carrying value of cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities approximates fair value because of the short-term nature of these instruments. The carrying value of the Company’s term loans and revolving credit facilities, including the current portion, approximate fair value as the terms and conditions of these loans are consistent with comparable market debt issuances. The carrying value of the equipment loans approximate fair value as the underlying interest rates approximate current market rates for all periods presented (Level 2). The Company measures certain assets at fair value on a non-recurring basis, generally annually or when events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. These assets include goodwill and other intangible assets. See Note 5. A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement.
Trade Receivables and Allowance for Doubtful Accounts	Trade Receivables and Allowance for Doubtful Accounts Customers are domestic and international shippers, major oil companies, independent exploration and production companies, pipeline and transportation companies, power generating operators, industrial companies, airports and state and local government agencies. All customers are granted credit on a short-term basis and related credit risks are considered minimal. The Company routinely reviews its trade receivables and makes provisions for probable doubtful accounts based on the credit worthiness of the parties involved, historical collection information and economic conditions. However, those provisions are estimates and actual results could differ from those estimates and those differences may be material. Trade receivables that are deemed uncollectible are removed from accounts receivable and from the allowance for doubtful accounts when collection efforts have been exhausted. The Company records allowances for doubtful accounts receivable based upon expected collectability. The reserve is generally established based upon an analysis of its aged receivables. Additionally, if necessary, a specific reserve for individual accounts is recorded when the Company becomes aware of a customer’s inability to meet its financial obligations, such as in the case of a bankruptcy filing or deterioration in the customer’s operating results or financial position. The Company also regularly reviews the allowance by considering factors such as historical collections experience, credit quality, age of the accounts receivable balance and current economic conditions that may affect a customer’s ability to pay. If actual bad debts differ from the reserves calculated, the Company records an adjustment to bad debt expense in the period in which the difference occurs. The following table provides a roll forward of the allowance for doubtful accounts for the three months ended March 31, 2019 and 2018 (in thousands): Three Months Ended 2019 2018 Allowance for doubtful accounts, beginning of period $ 627 $ 895 Bad debt expense 1,264 125 Write-offs, net of recoveries, for bad debt (154 ) (25 ) Allowance for doubtful accounts, end of period $ 1,737 $ 995
Asset Retirement Obligations	Asset Retirement Obligations Under the terms of its oilfield waste disposal permit for the SKCD facility, the Company is required to perform certain necessary closure activities as required by the RRC. The SKCD facility consists of multiple active and planned disposal pits within the facility, each of which must be closed once they have reached their permitted capacity for waste. Closure of the disposal pit entails capping the pit with a high-density polyethylene liner and topsoil amongst other environmental remediation procedures. The Company records an asset retirement obligation (“ARO”) for disposal pits in the year they become active and begin receiving oilfield waste, the balance of which represents the estimated amount the Company will incur to close each disposal pit in the landfill. The liability is initially recorded at fair value with the corresponding cost capitalized as a component of property and equipment within the Consolidated Balance Sheet. The liability is accreted to its present value each period, and the capitalized costs are amortized on a straight-line basis over the expected period of operation of the respective disposal pit. The Company determines the ARO by calculating the present value of estimated future cash flows related to the liability. Estimating the future ARO requires management to make estimates and judgments regarding timing and existence of a liability, as well as the necessary cost to achieve adequate closure of each pit. Inherent in the fair value calculation are numerous assumptions and judgments including the ultimate costs, inflation factors, credit adjusted discount rates, timing of settlement and changes in the legal, regulatory, environmental and political environments. To the extent future revisions to these assumptions impact the fair value of the existing ARO liability, a corresponding adjustment is made to the related asset. In each of December 2017 and April 2018, the Company established an ARO liability and associated asset in the amount of $0.65 million and $0.65 million, respectively. The Company recorded accretion expense of $27,000 and $13,000 during the three months ended March 31, 2019 and 2018, respectively. As of March 31, 2019 and December 31, 2018, the ARO liability was $1.4 million and $1.4 million, respectively. These ARO liabilities relate to the future closure costs associated with Disposal Pit #1 and Disposal Pit #2, respectively. Disposal Pit #1 and Disposal Pit #2 are the Company’s only active cells in the SKCD facility. This obligation represents the net present value of the estimated future payout of approximately $1.6 million, which is expected to be incurred by the Company upon closure of Disposal Pit #1 in 2020 and Disposal Pit # 2 in 2019 or 2020.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Standards implemented In August 2018, the SEC adopted the final rule under SEC Release No. 33-10532, Disclosure Update and Simplification Standards to be implemented In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) Revenue from Contracts with Customers: (Topic 606) Identifying Performance Obligations and Licensing In February 2016 the FASB issued ASU No. 2016-02 , Leases (Topic 842) In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820), - Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	3 Months Ended
Summary of Significant Accounting Policies (Tables)	Mar. 31, 2019
Accounting Policies [Abstract]
Schedule of changes in fair value hierarchy	Fair Value Measurement at Reporting Date Using Balance as of Quoted Significant Significant Contingent consideration - current $ 3,317 $ - $ - $ 3,317 Contingent consideration - long-term 5,050 - - 5,050 Total liabilities measured at fair value $ 8,367 $ - $ - $ 8,367 Balance as of Quoted Significant Significant Contingent consideration - current $ 2,470 $ - $ - $ 2,470 Contingent consideration - long-term 3,846 - - 3,846 Total liabilities measured at fair value $ 6,316 $ - $ - $ 6,316
Schedule of changes in liabilities measured at fair value	Contingent consideration - December 31, 2017 $ 4,132 Fair value of contingent consideration - acquisition of Clean Line (March 28, 2018) 507 Contingent consideration - March 31, 2018 $ 4,639 Contingent consideration - December 31, 2018 $ 6,316 Change in fair value of contingent consideration (recognized in earnings) 2,051 Contingent consideration - March 31, 2019 $ 8,367
Schedule of allowance for doubtful accounts	Three Months Ended 2019 2018 Allowance for doubtful accounts, beginning of period $ 627 $ 895 Bad debt expense 1,264 125 Write-offs, net of recoveries, for bad debt (154 ) (25 ) Allowance for doubtful accounts, end of period $ 1,737 $ 995

Business Acquisitions (Tables)

Business Acquisitions (Tables)	3 Months Ended
Business Acquisitions (Tables)	Mar. 31, 2019
Business Combinations [Abstract]
Schedule of allocation of the purchase price to the assets acquired and liabilities assumed	Trade receivable $ 1,590 Other current assets 188 Property and equipment 1,908 Intangible assets 1,104 Goodwill 1,865 Accounts payable and accrued expenses (1,147 ) Contingent liability (507 ) Cash purchase price, net of cash acquired $ 5,001

Property and Equipment (Tables)

Property and Equipment (Tables)	3 Months Ended
Property and Equipment (Tables)	Mar. 31, 2019
Property, Plant and Equipment [Abstract]
Schedule of property and equipment, net	March 31, December 31, 2019 2018 Vessels and equipment $ 34,217 $ 35,553 Vehicles and trailers 60,602 50,458 Machinery and equipment 111,250 109,961 Office equipment and fixtures 8,681 8,549 Landfill 18,687 18,525 Leasehold improvements 6,399 6,490 Computer systems/license fees 3,513 3,527 Construction in progress 13,496 7,697 256,845 240,760 Less: Accumulated depreciation (123,557 ) (118,195 ) Property and equipment, net $ 133,288 $ 122,565

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	3 Months Ended
Goodwill and Intangible Assets (Tables)	Mar. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of finite-lived intangible assets	Weighted average remaining March 31, 2019 Useful Lives life Intangible Accumulated Net (Years) (Years) Assets Amortization Balance Customer Relationships 8 - 20 9.9 $ 70,896 (20,249 ) $ 50,647 Tradenames/Trademarks 2 - 25 10.8 13,148 (6,700 ) 6,448 Trademarks Indefinite N/A 837 - 837 Permits/License 3-10 8.8 13,458 (8,690 ) 4,768 Non-compete Agreements 5 - 6 0.7 856 (806 ) 50 $ 99,195 $ (36,445 ) $ 62,750 Weighted average remaining December 31, 2018 Useful Lives life Intangible Accumulated Net (Years) (Years) Assets Amortization Balance Customer Relationships 8 - 20 10.1 $ 70,896 $ (18,939 ) $ 51,957 Tradenames/Trademarks 2 - 25 10.7 13,148 (6,378 ) 6,770 Trademarks Indefinite N/A 837 - 837 Permits/License 3-10 9.1 13,458 (8,491 ) 4,967 Non-compete Agreements 5 - 6 0.8 856 (773 ) 83 $ 99,195 $ (34,581 ) $ 64,614
Schedule of amortization expense	Year ended December 31, 2019 (excluding the three months ended March 31, 2019) $ 5,702 Year ended December 31, 2020 7,177 Year ended December 31, 2021 6,751 Year ended December 31, 2022 6,576 Year ended December 31, 2023 6,261 Thereafter 29,446 $ 61,913
Schedule of goodwill by reportable segment	March 31, December 31, 2019 2018 Domestic Environmental Services $ 30,567 $ 30,567 International Services 1,865 1,865 Sprint Segment 18,985 18,985 Total Goodwill $ 51,417 $ 51,417

Long-Term Debt (Tables)

Long-Term Debt (Tables)	3 Months Ended
Long-Term Debt (Tables)	Mar. 31, 2019
Long-term Debt, Unclassified [Abstract]
Schedule of short-term and long-term debt	March 31, December 31, 2019 2018 Term Loan principal $ 340,515 $ 341,372 Less: Unamortized deferred financing fees (7,453 ) (7,837 ) Less: Current portion (3,431 ) (3,431 ) Term loans, net of current portion and deferred financing costs 329,631 330,104 Revolver (current and long-term) 20,000 10,000 Term loans, net of current portion and deferred financing costs, and Revolver $ 349,631 $ 340,104

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
Commitments and Contingencies (Tables)	Mar. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Schedule of future minimum lease payments	Capital Leases Operating Leases 2019 (excluding the three months ended March 31, 2019) $ 1,547 $ 7,051 2020 2,063 8,318 2021 2,063 5,805 2022 1,972 4,470 2023 1,973 3,738 Thereafter - 4,032 Total minimum payments $ 9,618 $ 33,414 Less: imputed interest 1,100 Present value of minimum capital lease payments $ 8,518

Segment Data and Geographical_2

Segment Data and Geographical Data (Tables)	3 Months Ended
Segment Data and Geographical Data (Tables)	Mar. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Schedule of provides segment data and geographical data	Domestic Domestic Standby Environmental Corporate Services Services International Sprint Items Total Three Months Ended March 31, 2019 Operating revenue $ 10,393 $ 60,866 $ 8,147 $ 21,088 $ - $ 100,494 Operating expenses, including cost of revenue (excluding depreciation, amortization and certain other expenses) 5,223 51,259 5,946 8,827 - 71,255 General and administrative expenses 949 7,199 897 3,751 4,097 16,893 Operating profit (exclusive of depreciation, amortization and certain other expenses) 4,221 2,408 1,304 8,510 (4,097 ) 12,346 Goodwill - 30,567 1,865 18,985 - 51,417 Assets 82,891 168,270 19,312 136,064 (12,439 ) 394,098 2018 Operating revenue $ 8,972 $ 40,857 $ 4,793 $ 16,610 $ - $ 71,232 Operating expenses, including cost of revenue (excluding depreciation, amortization and certain other expenses) 3,689 33,806 3,344 7,527 - 48,366 General and administrative expenses 789 4,580 702 2,611 1,713 10,395 Operating profit (exclusive of depreciation, amortization and certain other expenses) 4,494 2,471 747 6,472 (1,713 ) 12,471 Goodwill - 26,070 1,864 10,935 - 38,869 Assets 83,317 123,927 33,324 87,709 (28,544 ) 299,733
Schedule of reconciliation of operating profit exclusive of depreciation and amortization to net income loss	Three Months Ended 2019 2018 Operating profit (exclusive of depreciation and amortization): Domestic Standby Services $ 4,221 $ 4,494 Domestic Environmental Services 2,408 2,471 International 1,304 747 Sprint 8,510 6,472 Corporate (4,097 ) (1,713 ) Total Operating profit (exclusive of depreciation, amortization and certain other charges) 12,346 12,471 Less: Depreciation and amortization 9,012 6,459 Management fees - 443 Acquisition expenses 447 1,222 Change in fair value of contingent consideration 2,051 - Other expense, net 1,400 897 Operating (loss) income (564 ) 3,450 Total other expenses, net (6,342 ) (3,692 ) Loss before income taxes (6,906 ) (242 ) Income tax expense 1,554 119 Net loss $ (8,460 ) $ (361 )
Schedule of revenue by geographic location with each segment	For the Three Months Ended March 31, 2019 Domestic Domestic Standby Environmental Services Services International Sprint Total North America $ 9,934 $ 60,866 $ - $ 21,088 $ 91,888 Latin America and Caribbean 459 - - - 459 EMEA - - 8,140 - 8,140 Asia Pacific - - 7 - 7 Total operating revenue $ 10,393 $ 60,866 $ 8,147 $ 21,088 $ 100,494 % of Total 10 % 61 % 8 % 21 % 100 % For the Three Months Ended March 31, 2018 Domestic Domestic Standby Environmental Services Services International Sprint Total North America $ 8,260 $ 40,857 $ - $ 16,610 $ 65,727 Latin America and Caribbean 712 - - - 712 Europe, Middle East and Africa (“EMEA”) - - 4,787 - 4,787 Asia Pacific - - 6 - 6 Total operating revenue $ 8,972 $ 40,857 $ 4,793 $ 16,610 $ 71,232 % of Total 13 % 57 % 7 % 23 % 100 %

Net Income (Loss) Per Share (Ta

Net Income (Loss) Per Share (Tables)	3 Months Ended
Net Income (Loss) Per Share (Tables)	Mar. 31, 2019
Net Income Loss Per Share Tables [Abstract]
Schedule of diluted net loss per share	Three Months Ended 2019 2018 Series A convertible preferred stock 1,050,000 - Common stock warrants - equity treatment 19,248,741 - Potentially dilutive securities 20,298,741 -

Description of Organization a_2

Description of Organization and Business Operations (Details) $ in Thousands	Jun. 11, 2018USD ($)
Description of Organization and Business Operations (Textual)
Dividend payment	$ 86,500

Summary of Significant Accoun_4

Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Contingent consideration - current	$ 3,317	$ 2,470
Contingent consideration - long-term	5,050	3,846
Total liabilities measured at fair value	8,367	6,316	$ 4,639	$ 4,132
Quoted Prices in Active Markets for Identical Assets (Level 1)
Contingent consideration - current
Contingent consideration - long-term
Total liabilities measured at fair value
Significant Other Observable Inputs (Level 2)
Contingent consideration - current
Contingent consideration - long-term
Total liabilities measured at fair value
Significant Unobservable Inputs (Level 3)
Contingent consideration - current	3,317	2,470
Contingent consideration - long-term	5,050	3,846
Total liabilities measured at fair value	$ 8,367	$ 6,316

Summary of Significant Accoun_5

Summary of Significant Accounting Policies (Details 1) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Summary Of Significant Accounting Policies
Contingent consideration, Beginning balance	$ 6,316	$ 4,132
Fair value of contingent consideration - acquisition of Clean Line (March 28, 2018)		507
Change in fair value of contingent consideration (recognized in earnings)	2,051
Contingent consideration, Ending balance	$ 8,367	$ 4,639

Summary of Significant Accoun_6

Summary of Significant Accounting Policies (Details 2) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Summary Of Significant Accounting Policies
Allowance for doubtful accounts, beginning of period	$ 627	$ 895
Bad debt expense	1,264	125
Write-offs, net of recoveries, for bad debt	(154)	(25)
Allowance for doubtful accounts, end of period	$ 1,737	$ 995

Summary of Significant Accoun_7

Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Apr. 30, 2018	Dec. 31, 2017
Summary of Significant Accounting Policies (Textual)
Asset retirement obligations liability and associated asset	$ 1,400		$ 1,400	$ 650	$ 650
Net present value of estimated future			$ 1,600
Accretion expense	$ 27,000	$ 13,000

Business Acquisitions (Details)

Business Acquisitions (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Mar. 28, 2018
Goodwill	$ 51,417	$ 51,417	$ 38,869
Clean Line [Member]
Trade receivable				$ 1,590
Other current assets				188
Property and equipment				1,908
Intangible assets				1,104
Goodwill				1,865
Accounts payable and accrued expenses				(1,147)
Contingent liability				(507)
Cash purchase price, net of cash acquired				$ 5,001

Business Acquisitions (Details

Business Acquisitions (Details Textual) - USD ($) $ in Thousands	1 Months Ended
	Mar. 28, 2018	Mar. 31, 2018
Business Acquisitions (Textual)
Transaction costs		$ 1,100
Clean Line Acquisition [Member]
Business Acquisitions (Textual)
Purchase price allocation, description	The Company and Clean Line entered into an agreement for the sale and purchase of the entire issued share capital of Clean Line for approximately $5.0 million, net of cash acquired, and exclusive of deferred consideration and a potential $3.9 million (£3.0 million) in earn out consideration, discussed below.

Property and Equipment (Details

Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Vessels and equipment	$ 34,217	$ 35,553
Vehicles and trailers	60,602	50,458
Machinery and equipment	111,250	109,961
Office equipment and fixtures	8,681	8,549
Landfill	18,687	18,525
Leasehold improvements	6,399	6,490
Computer systems/license fees	3,513	3,527
Construction in progress	13,496	7,697
Total	256,845	240,760
Less: Accumulated depreciation	(123,557)	(118,195)
Property and equipment, net	$ 133,288	$ 122,565

Property and Equipment (Detai_2

Property and Equipment (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Property and Equipment (Textual)
Depreciation expense	$ 7,100	$ 4,900

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Intangible Assets	$ 99,195	$ 99,195
Accumulated Amortization	(36,400)	(34,500)
Net Balance	$ 62,750	$ 64,614
Minimum [Member]
Useful Lives (Years)	2 years
Maximum [Member]
Useful Lives (Years)	25 years
Customer Relationships [Member]
Weighted average remaining life (Years)	9 years 10 months 25 days	10 years 1 month 6 days
Intangible Assets	$ 70,896	$ 70,896
Accumulated Amortization	(20,249)	(18,939)
Net Balance	$ 50,647	$ 51,957
Customer Relationships [Member] \| Minimum [Member]
Useful Lives (Years)	8 years	8 years
Customer Relationships [Member] \| Maximum [Member]
Useful Lives (Years)	20 years	20 years
Tradenames/Trademarks [Member]
Weighted average remaining life (Years)	10 years 9 months 18 days	10 years 8 months 12 days
Intangible Assets	$ 13,148	$ 13,148
Accumulated Amortization	(6,700)	(6,378)
Net Balance	$ 6,448	$ 6,770
Tradenames/Trademarks [Member] \| Minimum [Member]
Useful Lives (Years)	2 years	2 years
Tradenames/Trademarks [Member] \| Maximum [Member]
Useful Lives (Years)	25 years	25 years
Trademarks [Member]
Useful Lives (Years)	0 years	0 years
Weighted average remaining life (Years)	0 years	0 years
Intangible Assets	$ 837	$ 837
Accumulated Amortization
Net Balance	$ 837	$ 837
Permits/License [Member]
Weighted average remaining life (Years)	8 years 9 months 18 days	9 years 1 month 6 days
Intangible Assets	$ 13,458	$ 13,458
Accumulated Amortization	(8,690)	(8,491)
Net Balance	$ 4,768	$ 4,967
Permits/License [Member] \| Minimum [Member]
Useful Lives (Years)	3 years	3 years
Permits/License [Member] \| Maximum [Member]
Useful Lives (Years)	10 years	10 years
Non-compete Agreements [Member]
Weighted average remaining life (Years)	8 months 12 days	9 months 18 days
Intangible Assets	$ 856	$ 856
Accumulated Amortization	(806)	(773)
Net Balance	$ 50	$ 83
Non-compete Agreements [Member] \| Minimum [Member]
Useful Lives (Years)	5 years	5 years
Non-compete Agreements [Member] \| Maximum [Member]
Useful Lives (Years)	6 years	6 years

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets (Details 1) $ in Thousands	Mar. 31, 2019USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Year ended December 31, 2019 (excluding the three months ended March 31, 2019)	$ 5,702
Year ended December 31, 2020	7,177
Year ended December 31, 2021	6,751
Year ended December 31, 2022	6,576
Year ended December 31, 2023	6,261
Thereafter	29,446
Intangible assets, Net	$ 61,913

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets (Details 2) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Total Goodwill	$ 51,417	$ 51,417	$ 38,869
Domestic Environmental Services [Member]
Total Goodwill	30,567	30,567
International Services [Member]
Total Goodwill	1,865	1,865
Sprint Segment [Member]
Total Goodwill	$ 18,985	$ 18,985

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Goodwill and Intangible Assets (Textual)
Amortization expense related to intangible assets	$ 1,864	$ 1,540
Minimum [Member]
Goodwill and Intangible Assets (Textual)
Intangible assets useful lives	2 years
Maximum [Member]
Goodwill and Intangible Assets (Textual)
Intangible assets useful lives	25 years

Long-Term Debt (Details)

Long-Term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Long-term Debt
Term Loan principal	$ 340,515	$ 341,372
Less: Unamortized deferred financing fees	(7,453)	(7,837)
Less: Current portion	(3,431)	(3,431)
Term loans, net of current portion and deferred financing costs	329,631	330,104
Revolver (current and long-term)	20,000	10,000
Term loans, net of current portion and deferred financing costs, and Revolver	$ 349,631	$ 340,104

Long-Term Debt (Details Textual

Long-Term Debt (Details Textual) - USD ($) $ in Thousands	Mar. 15, 2019	Oct. 02, 2018	Jun. 11, 2018	Mar. 31, 2019
Borrowings, description				Outstanding loans under the Credit Facility will bear interest at the Borrowers' option at either the Eurodollar rate plus 5.25% or the base rate plus 4.25% per year. In addition, the Borrowers will be charged (1) a commitment fee in an amount equal to 0.50% per annum times the average daily undrawn portion of the Revolver, (2) a letter of credit fee in an amount equal to the applicable margin then in effect for revolving loans bearing interest at the Eurodollar Rate times the average aggregate daily maximum amount available to be drawn under all outstanding letters of credit, (3) a letter of credit fronting fee in an amount equal to 0.125% times the average aggregate daily maximum amount available to be drawn under all letters of credit and (4) certain other fees as agreed between the parties. The interest rate applicable to the Term Loan and Revolver under the Credit Facility at March 31, 2019 is approximately 7.95%.
Payments on the term loan				$ 857,719
Line of credit [Member]
Line of credit facility, description	The Company entered into an incremental revolving credit commitment of $10.0 million under the Credit Facility, bringing its total revolving credit commitments under the Revolver up to $45.0 million. The Revolver matures on June 11, 2023 and the Term Loan matures on June 11, 2024, in each case unless otherwise extended in accordance with the terms of the Credit Facility.	The Borrowers and the other guarantors (including NRC Group) entered into a joinder agreement (the "Joinder Agreement") on October 2, 2018, pursuant to which the Borrowers increased the Original Term Loan in the amount of $35.0 million (the "Incremental Term Loan," and together with the Original Term Loan, the "Term Loan") and the amount available under the Revolver was reduced by $5 million to $35.0 million.	NRC Group, as parent, and the other guarantors party thereto entered into a credit facility (the "Credit Facility") on June 11, 2018, which included a $308.0 million term loan (the "Original Term Loan") and a $40.0 million revolving credit facility (the "Revolver").

Income Taxes (Details)

Income Taxes (Details)	3 Months Ended
Income Taxes (Details)	Mar. 31, 2019	Mar. 31, 2018
Income Taxes (Textual)
Effective income tax rate	22.50%	49.20%
Income tax, description	The Company files income tax returns in the U.S. Federal and various state, local and foreign jurisdictions. For Federal income tax purposes, the 2015 through 2017 tax years remain open for examination by the tax authorities under the normal three-year statute of limitations. For state tax purposes, the 2014 through 2017 tax years remain open for examination by the tax authorities under a four-year statute of limitations. For foreign income tax purposes, the tax years 2013 through 2017 remain open for examination by the tax authorities under the various statute of limitation year requirement by that specific local country's tax laws.

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Related Party Transactions (Textual)
Waste hauling services	$ 6,000	$ 3,000
Revenues from related entities	8,000	27,000
Management fees	$ 0	$ 4,000

Commitments and Contingencies_2

Commitments and Contingencies (Details) $ in Thousands	Mar. 31, 2019USD ($)
Capital Leases [Member]
2019 (excluding the three months ended March 31, 2019)	$ 1,547
2020	2,063
2021	2,063
2022	1,972
2023	1,973
Thereafter
Total minimum payments	9,618
Less: imputed interest	1,100
Present value of minimum capital lease payments	8,518
Operating Leases [Member]
2019 (excluding the three months ended March 31, 2019)	7,051
2020	8,318
2021	5,805
2022	4,470
2023	3,738
Thereafter	4,032
Total minimum payments	$ 33,414

Commitments and Contingencies_3

Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Commitments and Contingencies (Textual)
Rent expenses operating leases	$ 2,300	$ 2,000
Financial institutions amount	1,600
Letter of Credit [Member]
Commitments and Contingencies (Textual)
Financial institutions amount	$ 3,300

Segment Data and Geographical_3

Segment Data and Geographical Data (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Operating revenue	$ 100,494	$ 71,232
Operating expenses, including cost of revenue (excluding depreciation, amortization and certain other expenses)	71,255	48,366
General and administrative expenses	16,893	10,395
Operating profit (exclusive of depreciation, amortization and certain other expenses)		12,471
Goodwill	51,417	38,869	$ 51,417
Assets	394,098	299,733	$ 376,127
Domestic Standby Services [Member]
Operating revenue	10,393	8,972
Operating expenses, including cost of revenue (excluding depreciation, amortization and certain other expenses)	5,223	3,689
General and administrative expenses	949	789
Operating profit (exclusive of depreciation, amortization and certain other expenses)	4,221	4,494
Goodwill
Assets	82,891	83,317
Domestic Environmental Services [Member]
Operating revenue	60,866	40,857
Operating expenses, including cost of revenue (excluding depreciation, amortization and certain other expenses)	51,259	33,806
General and administrative expenses	7,199	4,580
Operating profit (exclusive of depreciation, amortization and certain other expenses)	2,408	2,471
Goodwill	30,567	26,070
Assets	168,270	123,927
International [Member]
Operating revenue	8,147	4,793
Operating expenses, including cost of revenue (excluding depreciation, amortization and certain other expenses)	5,946	3,344
General and administrative expenses	897	702
Operating profit (exclusive of depreciation, amortization and certain other expenses)	1,304	747
Goodwill	1,865	1,864
Assets	19,312	33,324
Sprint [Member]
Operating revenue	21,088	16,610
Operating expenses, including cost of revenue (excluding depreciation, amortization and certain other expenses)	8,827	7,527
General and administrative expenses	3,751	2,611
Operating profit (exclusive of depreciation, amortization and certain other expenses)	8,510	6,472
Goodwill	18,985	10,935
Assets	136,064	87,709
Corporate Items [Member]
Operating revenue
Operating expenses, including cost of revenue (excluding depreciation, amortization and certain other expenses)
General and administrative expenses	4,097	1,713
Operating profit (exclusive of depreciation, amortization and certain other expenses)	(4,097)	(1,713)
Goodwill
Assets	$ (12,439)	$ (28,544)

Segment Data and Geographical_4

Segment Data and Geographical Data (Details 1) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Operating profit (exclusive of depreciation and amortization):		$ 12,471
Total Operating profit (exclusive of depreciation, amortization and certain other charges	$ 12,346	12,471
Less:
Depreciation and amortization	9,012	6,459
Management fees		443
Acquisition expenses	447	1,222
Change in fair value of contingent consideration	2,051
Other expense, net	1,400	897
Operating (loss) income	(564)	3,450
Total other expenses, net	(6,342)	(3,692)
Loss before income taxes	(6,906)	(242)
Income tax expense	1,554	119
Net loss	(8,460)	(361)
Domestic Standby Services [Member]
Operating profit (exclusive of depreciation and amortization):	4,221	4,494
Domestic Environmental Services [Member]
Operating profit (exclusive of depreciation and amortization):	2,408	2,471
International [Member]
Operating profit (exclusive of depreciation and amortization):	1,304	747
Sprint [Member]
Operating profit (exclusive of depreciation and amortization):	8,510	6,472
Corporate [Member]
Operating profit (exclusive of depreciation and amortization):	$ (4,097)	$ (1,713)

Segment Data and Geographical_5

Segment Data and Geographical Data (Details 2) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Total operating revenue	$ 100,494	$ 71,232
Domestic Standby Services [Member]
Total operating revenue	$ 10,393	$ 8,972
Total	10.00%	13.00%
Domestic Environmental Services [Member]
Total operating revenue	$ 60,866	$ 40,857
Total	61.00%	57.00%
International [Member]
Total operating revenue	$ 8,147	$ 4,793
Total	8.00%	7.00%
Sprint [Member]
Total operating revenue	$ 21,088	$ 16,610
Total	21.00%	23.00%
North America [Member]
Total operating revenue	$ 91,888	$ 65,727
North America [Member] \| Domestic Standby Services [Member]
Total operating revenue	9,934	8,260
North America [Member] \| Domestic Environmental Services [Member]
Total operating revenue	60,866	40,857
North America [Member] \| International [Member]
Total operating revenue
North America [Member] \| Sprint [Member]
Total operating revenue	21,088	16,610
Latin America and Caribbean [Member]
Total operating revenue	459	712
Latin America and Caribbean [Member] \| Domestic Standby Services [Member]
Total operating revenue	459	712
Latin America and Caribbean [Member] \| Domestic Environmental Services [Member]
Total operating revenue
Latin America and Caribbean [Member] \| International [Member]
Total operating revenue
Latin America and Caribbean [Member] \| Sprint [Member]
Total operating revenue
EMEA [Member]
Total operating revenue	8,140	4,787
EMEA [Member] \| Domestic Standby Services [Member]
Total operating revenue
EMEA [Member] \| Domestic Environmental Services [Member]
Total operating revenue
EMEA [Member] \| International [Member]
Total operating revenue	8,140	4,787
EMEA [Member] \| Sprint [Member]
Total operating revenue
Asia Pacific [Member]
Total operating revenue	7	6
Asia Pacific [Member] \| Domestic Standby Services [Member]
Total operating revenue
Asia Pacific [Member] \| Domestic Environmental Services [Member]
Total operating revenue
Asia Pacific [Member] \| International [Member]
Total operating revenue	7	6
Asia Pacific [Member] \| Sprint [Member]
Total operating revenue

Segment Data and Geographical_6

Segment Data and Geographical Data (Details Textual) - Segments	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Number of operating segments	4
Operating revenue percentage	10.00%	10.00%

Stockholders' Equity (Deficit)

Stockholders' Equity (Deficit) (Details) - USD ($) $ / shares in Units, $ in Thousands	Apr. 05, 2019	Mar. 31, 2019	Mar. 29, 2019	Dec. 31, 2018
Authorized common stock		200,000,000		200,000,000
Common stock voting rights		Common Stock has voting rights of one vote for each share of Common Stock. The Company did not issue common stock during the three months ended March 31, 2019 and March 31, 2018.
Preferred stock authorized		5,000,000		5,000,000
Preferred stock, par value		$ 0.0001		$ 0.0001
Preferred stock, designated shares		1,050,000
Preferred stock, undesignated shares		3,950,000
Shares reserved under the plan for issuance of share based payments				3,000,000
Percentage of convertible cumulative preferred stock			7.00%
Cash dividend, per share			$ 1.75
Accrued dividend		$ 1,800
Subsequent Event [Member] \| Restricted Stock [Member]
Granted	831,705
Subsequent Event [Member] \| Stock Options [Member]
Granted	150,000

Net Income (Loss) Per Share (De

Net Income (Loss) Per Share (Details) - shares	3 Months Ended
Net Income (Loss) Per Share (Details) - shares	Mar. 31, 2019	Mar. 31, 2018
Potentially dilutive securities	20,298,741,000
Series A convertible preferred stock [Member]
Potentially dilutive securities	1,050,000,000
Common stock warrants - equity treatment [Member]
Potentially dilutive securities	19,248,741,000

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ in Thousands	May 01, 2019	Apr. 26, 2019	Mar. 31, 2019
Subsequent Events (Textual)
Subsequent events, description			Pursuant to the terms of the Purchase Agreement, the Company may also be obligated to pay to JFL Partners additional consideration of up to $25.0 million (payable in cash, shares of Company common stock or any combination thereof, at the Company’s option) to the extent certain financial performance metrics are achieved by the OIT business during calendar years 2019 and 2020. The full $25.0 million would be payable if the OIT business’s normalized earnings before interest, taxes, depreciation and amortization exceeds $10.0 million in either calendar year, and no payment would be due unless the OIT business achieves normalized earnings before interest, taxes, depreciation and amortization of more than $6.0 million in either calendar year.
Triggered amount payment			$ 10,000
Subsequent Events [Member]
Subsequent Events (Textual)
Subsequent events, description		The transaction closed on April 26, 2019. The Company purchased the assets of OIT, Inc. for an initial cash purchase price of $6.0 million paid at closing, plus an additional $2.0 million deferred consideration payable in cash, common stock of the Company or a combination of the two, and up to an additional $5.0 million in earn-out payments payable in cash, common stock of the Company or a combination of the two and stock over the next three years based on certain financial milestones.
Revolving credit facility	$ 15,000
Aggregate revolving credit facility	$ 60,000