10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

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

For the quarterly period ended June 30, 2020

OR

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

Commission File Number 001-36541

LIMBACH HOLDINGS, INC.

(Exact name of registrant as specified in its charter)

Delaware, USA	46-5399422
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
1251 Waterfront Place, Suite 201 Pittsburgh, Pennsylvania	15222
(Address of principal executive offices)	(Zip Code)

1-412-359-2100

(Registrant’s telephone number, including area code)

Not Applicable

(Former name, former address and former fiscal year, if changed since last report)

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class	Trading Symbol(s)	Name of Each Exchange on Which Registered
Common Stock, par value $0.0001 per share	LMB	The Nasdaq Stock Market LLC

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

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

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

Large accelerated filer ¨ Accelerated filer ¨

Non-accelerated filer ý                                   Smaller reporting company ý

Emerging growth company ¨

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

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

As of August 12, 2020, there were 7,884,202 shares of the registrant’s common stock, $0.0001 par value per share, outstanding.

LIMBACH HOLDINGS, INC.

Form 10-Q

TABLE OF CONTENTS

Part I.
Item 1.	Financial Statements (Unaudited)	1
	Condensed Consolidated Balance Sheets as of June 30, 2020 and December 31, 2019	1
	Condensed Consolidated Statements of Operations for the Three and Six Months Ended June 30, 2020 and June 30, 2019	2
	Condensed Consolidated Statement of Stockholders’ Equity for the Three and Six Months Ended June 30, 2020 and June 30, 2019	3
	Condensed Consolidated Statements of Cash Flows for the Six Months Ended June 30, 2020 and June 30, 2019	4
	Notes to Condensed Consolidated Financial Statements	6
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	31
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	48
Item 4.	Controls and Procedures	48
Part II.
Item 1.	Legal Proceedings	49
Item 1A.	Risk Factors	49
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	49
Item 3.	Defaults Upon Senior Securities	49
Item 4.	Mine Safety Disclosures	49
Item 5.	Other Information	49
Item 6.	Exhibits	50

Part I

Item 1. Financial Statements

LIMBACH HOLDINGS, INC.

Condensed Consolidated Balance Sheets

(Unaudited)

(in thousands, except share and per share data)	June 30, 2020			December 31, 2019
ASSETS
Current assets
Cash and cash equivalents	$	28,829		$	8,344
Restricted cash	113			113
Accounts receivable, net	101,451			105,067
Contract assets	72,287			77,188
Income tax receivable	665			494
Other current assets	4,340			4,174
Total current assets	207,685			195,380
Property and equipment, net	20,161			21,287
Intangible assets, net	11,894			12,311
Goodwill	6,129			6,129
Operating lease right-of-use assets	19,616			21,056
Deferred tax asset	3,988			4,786
Other assets	530			668
Total assets	$	270,003		$	261,617
LIABILITIES
Current liabilities
Current portion of long-term debt	$	6,414		$	4,425
Current operating lease liabilities	3,681			3,750
Accounts payable, including retainage	66,748			86,267
Contract liabilities	58,624			42,370
Accrued expenses and other current liabilities	29,373			20,057
Total current liabilities	164,840			156,869
Long-term debt	37,521			38,868
Long-term operating lease liabilities	16,502			18,247
Other long-term liabilities	940			763
Total liabilities	219,803			214,747
Commitments and contingencies (Note 15)
STOCKHOLDERS’ EQUITY
Common stock, $0.0001 par value; 100,000,000 shares authorized, 7,853,377 issued and outstanding at June 30, 2020 and 7,688,958 at December 31, 2019	1			1
Additional paid-in capital	56,992			56,557
Accumulated deficit	(6,793		)	(9,688		)
Total stockholders’ equity	50,200			46,870
Total liabilities and stockholders’ equity	$	270,003		$	261,617

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

1

LIMBACH HOLDINGS, INC.

Condensed Consolidated Statements of Operations

(Unaudited)

	Three months ended June 30,						Six months ended June 30,
	2020			2019			2020			2019
(in thousands, except share and per share data)				(As Recast)						(As Recast)
Revenue	$	135,185		$	132,603		$	273,957		$	266,350
Cost of revenue	114,850			114,908			235,398			229,031
Gross profit	20,335			17,695			38,559			37,319
Operating expenses:
Selling, general and administrative expenses	13,752			17,079			30,552			33,124
Amortization of intangibles	274			175			417			350
Total operating expenses	14,026			17,254			30,969			33,474
Operating income	6,309			441			7,590			3,845
Other income (expenses):
Interest expense, net	(2,137		)	(1,597		)	(4,295		)	(2,430		)
Gain (loss) on disposition of property and equipment	(13		)	9			17			21
Loss on debt extinguishment	—			(513		)	—			(513		)
Gain (loss) on change in fair value of warrant liability	(102		)	(103		)	59			(103		)
Total other expenses	(2,252		)	(2,204		)	(4,219		)	(3,025		)
Income (loss) before income taxes	4,057			(1,763		)	3,371			820
Income tax provision (benefit)	1,110			(474		)	476			261
Net income (loss)	$	2,947		$	(1,289	)	$	2,895		$	559
Earnings Per Share (“EPS”)
Income (loss) per common share:
Basic	$	0.38		(0.17		)	$	0.37		0.07
Diluted	$	0.37		(0.17		)	$	0.37		0.07
Weighted average number of shares outstanding:
Basic	7,845,515			7,643,133			7,821,594			7,643,133
Diluted	7,905,368			7,643,133			7,878,246			7,717,484

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

2

LIMBACH HOLDINGS, INC.

Condensed Consolidated Statements of Stockholders’ Equity

(Unaudited)

	Common Stock
(in thousands, except share amounts)	Number of shares outstanding	Par value amount		Additional paid-in capital		Accumulated deficit			Stockholders’ equity
Balance at December 31, 2019	7,688,958	$	1	$	56,557	$	(9,688	)	$	46,870
Stock-based compensation	—	—		295		—			295
Shares issued related to vested restricted stock units	104,905	—		—		—			—
Net loss	—	—		—		(52		)	(52		)
Balance at March 31, 2020	7,793,863	$	1	$	56,852	$	(9,740	)	$	47,113
Stock-based compensation	—	—		140		—			140
Shares issued related to vested restricted stock units	59,514	—		—		—			—
Net income	—	—		—		2,947			2,947
Balance at June 30, 2020	7,853,377	$	1	$	56,992	$	(6,793	)	$	50,200

	Common Stock
(in thousands, except share amounts)	Number of shares outstanding	Par value amount		Additional paid-in capital		Accumulated deficit			Stockholders’ equity
Balance at December 31, 2018	7,592,911	$	1	$	54,791	$	(8,424	)	$	46,368
Cumulative effect of accounting change - ASC Topic 606	—	—		—		639			639
Cumulative effect of accounting change - ASC Topic 842	—	—		—		(128		)	(128		)
Stock-based compensation	—	—		367		—			367
Shares issued related to vested restricted stock units	50,222	—		—		—			—
Net income	—	—		—		1,847			1,847
Balance at March 31, 2019 (As Recast)	7,643,133	$	1	$	55,158	$	(6,066	)	$	49,093
Stock-based compensation	—	—		515		—			515
Net loss	—	—		—		(1,289		)	(1,289		)
Balance at June 30, 2019 (As Recast)	7,643,133	$	1	$	55,673	$	(7,355	)	$	48,319

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

3

LIMBACH HOLDINGS, INC.

Condensed Consolidated Statements of Cash Flows

(Unaudited)

	Six months ended June 30,
	2020			2019
(in thousands)				(As Recast)
Cash flows from operating activities:
Net income	$	2,895		$	559
Adjustments to reconcile net income to cash provided by (used in) operating activities:
Depreciation and amortization	3,140			2,873
Provision for doubtful accounts	27			33
Stock-based compensation expense	435			882
Noncash operating lease expense	2,025			1,818
Amortization of debt issuance costs	1,080			510
Deferred income tax (benefit) provision	798			214
Gain on sale of property and equipment	(17		)	(21		)
Loss on debt extinguishment	—			513
Gain on change in fair value of warrant liability	(59		)	103
Changes in operating assets and liabilities:
Accounts receivable	3,588			(5,737		)
Contract assets	4,901			(4,476		)
Other current assets	(166		)	30,138
Accounts payable, including retainage	(19,519		)	(4,651		)
Prepaid income taxes	(171		)	85
Accrued taxes payable	(11		)	10
Contract liabilities	16,254			(4,686		)
Operating lease liabilities	(2,399		)	(1,818		)
Accrued expenses and other current liabilities	9,419			(31,923		)
Other long-term liabilities	237			(87		)
Net cash provided by (used in) operating activities	22,457			(15,661		)
Cash flows from investing activities:
Proceeds from sale of property and equipment	64			77
Advances to joint ventures	(1		)	1
Purchase of property and equipment	(660		)	(1,229		)
Net cash used in investing activities	(597		)	(1,151		)
Cash flows from financing activities:
Increase in bank overdrafts	—			2,783
Payments on Credit Agreement term loan	—			(14,335		)
Proceeds from Credit Agreement revolver	—			17,500
Payments on Credit Agreement revolver	—			(17,500		)
Proceeds from 2019 Revolving Credit Facility	7,250			7,500
Payments on 2019 Revolving Credit Facility	(7,250		)	(7,500		)
Proceeds from 2019 refinancing Term Loan, net of debt discount	—			38,643
Warrants issued in conjunction with the 2019 Refinancing Term Loan	—			969
Embedded derivative associated with the 2019 Refinancing Term Loan	—			388
Payments on Bridge Term Loan	—			(7,736		)

4

Payments on finance leases	(1,285		)	(1,140		)
Payments of debt issuance costs	—			(3,339		)
Taxes paid related to net-share settlement of equity awards	(90		)	(29		)
Net cash (used in) provided by financing activities	(1,375		)	16,204
Increase in cash, cash equivalents and restricted cash	20,485			(608		)
Cash, cash equivalents and restricted cash, beginning of period	8,457			1,732
Cash, cash equivalents and restricted cash, end of period	$	28,942		$	1,124
Supplemental disclosures of cash flow information
Noncash investing and financing transactions:
Right of use assets obtained in exchange for new operating lease liabilities	$	—		$	3,022
Right of use assets obtained in exchange for new finance lease liabilities	1,050			1,630
Right of use assets disposed or adjusted modifying operating lease liabilities	586			1,651
Right of use assets disposed or adjusted modifying finance lease liabilities	(64		)	—
Interest paid	$	3,250		$	1,621

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

5

LIMBACH HOLDINGS, INC.

Notes to Condensed Consolidated Financial Statements (Unaudited)

Note 1 – Organization and Plan of Business Operations

Limbach Holdings, Inc. (the “Company,” “we” or “us”), is a Delaware corporation headquartered in Pittsburgh, Pennsylvania that was formed on July 20, 2016, as a result of a business combination with Limbach Holdings LLC (“LHLLC”). The Company’s condensed consolidated financial statements include the accounts of Limbach Holdings, Inc. and its wholly-owned subsidiaries, including LHLLC, Limbach Facility Services LLC, Limbach Company LLC, Limbach Company LP, Harper Limbach LLC, and Harper Limbach Construction LLC.

We operate in two segments, (i) Construction, in which we generally manage large construction or renovation projects that involve primarily heating, ventilation, and air conditioning (“HVAC”), plumbing, or electrical services, and (ii) Service, in which we provide maintenance or service primarily on HVAC, plumbing or electrical systems. This work is primarily performed under fixed price, modified fixed price, and time and material contracts over periods of typically less than two years. The Company's customers operate in several different industries, including healthcare, education, sports and entertainment, infrastructure, government, hospitality, commercial, manufacturing, mission critical, and industrial manufacturing. The Company operates primarily in the Northeast, Mid-Atlantic, Southeast, Midwest, and Southwestern regions of the United States.

Emerging Growth Company

Section 102(b)(1) of the Jumpstart Our Business Startups Act (“JOBS Act”) exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a registration statement under the Securities Act of 1933, as amended, declared effective or do not have a class of securities registered under the Securities Exchange Act of 1934, as amended (the “Exchange Act”) are required to comply with the new or revised financial accounting standards. The JOBS Act provides that a company can elect to opt out of the extended transition period and comply with the requirements that apply to non-emerging growth companies but any such election to opt out is irrevocable. We ceased to qualify as an emerging growth company on December 31, 2019. Accordingly, we are required to comply with new or revised financial accounting standards as a public business entity.

Impact of the COVID-19 Pandemic

In March 2020, the World Health Organization declared the outbreak of COVID-19 a global pandemic. The COVID-19 pandemic has caused significant disruption and volatility on a global scale resulting in, among other things, an economic slowdown and the possibility of a continued economic recession. In response to the COVID-19 outbreak, national and local governments around the world instituted certain measures, including travel bans, prohibitions on group events and gatherings, shutdowns of certain non-essential businesses, curfews, shelter-in-place orders and recommendations to practice social distancing. The various governmental actions have been and remain applicable to Limbach's operations in different ways, often varying by state. In some instances, these orders continued to result in shutdowns of certain projects in our Construction and Service segments into the three months ended June 30, 2020. In limited instances, projects chose to shutdown work irrespective of the existence or applicability of government action. In most markets, construction is considered an essential business and Limbach continued to staff its projects and perform work during the three months ended June 30, 2020 and has since then seen most all of the projects that were in progress restart. As Limbach's operations have been deemed essential, we have taken several measures to combat the COVID-19 downturn. The duration or recurrence of these measures and the impact of COVID-19 is unknown and may be extended, and additional measures may be necessary. The New England region was the only branch where all construction activity was prohibited for a period of time. In addition to project suspensions in the New England region, each of our other branches experienced select project suspensions and were adversely impacted by COVID-19 related regulation. In May, much of the COVID-19 regulations that caused shutdowns of projects in the New England region were lifted and all of the projects that were suspended in that region resumed operations, as well as the other projects that were impacted by similar suspensions in each of our other branches also resumed. In the Service segment, the branches are currently experiencing a slowdown in some types of work due to restrictions on building access but began to see improvement start in the month of July. As building access returns, the branches are expecting building owners to maintain or retrofit current facilities in lieu of funding larger capital projects.

During the first half of 2020, we took several actions to combat the COVID-19 outbreak induced downturn in our business including, but not limited to, the following:

• Identification of projects that have been shut down and methods for seeking to preserve any contractual entitlement that may exist;

6

• Establishment of a task force to identify possible types and areas of impact from COVID-19 for both shutdown and continuing operations;

• Examination of the Company's productivity and potential impact on gross profit as a result of COVID-19;

• Implementation of the Company's pandemic response plan;

• Implemented our furlough and work schedule reduction plans, as well as permanent reductions in force;

• Suspended substantially all discretionary, non-essential expenditures, including but not limited to, auto allowances, deferral of rent ranging between 1 and 3 months, 10% salary reduction for a select group of corporate and regional management and cost reduction opportunities identified by our external consultant; and

• Continued our hiring freeze.

During the month of July 2020, with the return of project and service work, we removed the 10% salary reduction for the select group of corporate and regional management, returned auto allowances, reinstated positions, removed schedule reduction plans and discontinued our hiring freeze.

In addition to the above actions taken during the initial impacts of COVID-19, we continue to take steps to minimize the adverse impacts of the COVID-19 pandemic on our business and to protect the safety of our employees and continue to emphasize more frequent washing of hands and tools, social distancing, wearing masks and work protocols. Limbach's COVID-19 policy is written based on the best practices provided by the Centers for Disease Control and Prevention (“CDC”) and Occupational Safety and Health Administration for essential workers. Our updated Work From Home Policy, along with the Company's business continuity planning and information technology enhancements have enabled an orderly transition to remote work and facilitated social distancing for salaried employees.

Testing and inpatient treatment for COVID-19 is covered under our medical plan and fees have been waived since the onset of the pandemic. Counseling is available through our employee assistance plan to assist employees with financial, mental and emotional stress related to the virus and other issues.  

Management continues to perform a reforecast of its 2020 and 2021 financial plans on a monthly basis. For the period ended June 30, 2020, we assessed a variety of factors, including but not limited to projects in our Construction and Service segments currently being impacted or delayed, construction industry financial forecasts for the remainder of 2020, and the impact of certain cost-cutting measures implemented during the end of the our first fiscal quarter. Based on these factors we assumed a measured recovery in revenue and gross profit that commenced in May and returning to normal revenue and gross profit levels in Q4 2020. However, it is difficult to identify the nature and extent of the COVID-19 impacts and fully estimate any costs associated with its impacts. We believe these impacts will become more defined over time and any actual cost impacts are expected to be more readily discernible as projects continue to progress towards completion. Based on management's current reforecast, management projects compliance with the financial covenants associated with its current credit agreements for the next 12 months.

While management has used all currently available information in its forecasts, the ultimate impact of the COVID-19 pandemic on our business, results of operations, financial condition and cash flows is highly uncertain, cannot be accurately predicted and is dependent on future developments, including the duration of the pandemic and the related length of its impact on the global economy, such as a lengthy or severe recession or any other negative trend in the U.S. or global economy, and any new information that may emerge concerning the COVID-19 outbreak and the actions to contain it or treat its impact. The continued impact on our business as a result of COVID-19 pandemic could result in a material adverse effect on our business, results of operations, financial condition, liquidity and prospects in the near-term and beyond 2020.

On March 27, 2020, the Coronavirus Aid Relief and Economic Security Act (the “CARES Act”) was signed into law. The CARES Act provides opportunities for additional liquidity, loan guarantees and other government programs to support companies affected by the COVID-19 pandemic and their employees. The Company elected to utilize the option to defer payment of certain payroll taxes and utilize certain income tax updates (i.e. NOL carryback).

Note 2 – Significant Accounting Policies

Basis of Presentation

Condensed Consolidated Financial Statements

7

The accompanying unaudited Condensed Consolidated Financial Statements have been prepared in accordance with instructions to the Quarterly Report on Form 10-Q and Rule 8-03 of Regulation S-X for smaller reporting companies. Consequently, certain information and note disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”) have been condensed or omitted pursuant to those rules and regulations, although the Company believes that the disclosures made are adequate to make the information not misleading. Readers of this report should refer to the consolidated financial statements and the notes thereto included in our most recent Annual Report on Form 10-K filed with the Securities and Exchange Commission (the “SEC”) on May 12, 2020. 

Unaudited Interim Financial Information

The accompanying interim Condensed Consolidated Balance Sheets, Condensed Consolidated Statements of Operations, Condensed Consolidated Statements of Stockholders’ Equity and Condensed Consolidated Statements of Cash Flows for the periods presented are unaudited. Also, within the notes to the Condensed Consolidated Financial Statements, we have included unaudited information for these interim periods. These unaudited interim Condensed Consolidated Financial Statements have been prepared in accordance with GAAP. In our opinion, the accompanying unaudited Condensed Consolidated Financial Statements contain all normal and recurring adjustments necessary for a fair statement of the Company’s financial position as of June 30, 2020, and its results of operations and its cash flows for the six months ended June 30, 2020. The results for the six months ended June 30, 2020 are not necessarily indicative of the results to be expected for the year ending December 31, 2020.

The Condensed Consolidated Balance Sheet as of December 31, 2019 was derived from our audited financial statements included in our Annual Report on Form 10-K filed with the SEC on May 12, 2020, but is presented as condensed and does not contain all of the footnote disclosures from the annual financial statements.

Note 3 – Accounting Standards

Recently Adopted Accounting Standards

New Revenue Recognition Standard

In May 2014, the FASB issued Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers (Topic 606), as amended by subsequent ASUs (collectively, “ASC Topic 606”) which amends the existing accounting standards for revenue recognition and establishes principles for recognizing revenue upon the transfer of promised goods or services to customers based on the expected consideration to be received in exchange for those goods or services. Effective December 31, 2019, management adopted ASC Topic 606 for the annual and quarterly periods beginning after January 1, 2019 using a modified retrospective transition approach. The financial information for the three and six months ended June 30, 2019 has been recast to conform to the new standard.

The adoption of ASC Topic 606 did not have an impact on revenue of our fixed-price and other service contracts. However, it did impact revenue of our construction-type contracts within our construction and service segments specifically in accounting for warranties. For many of our construction-type contracts, we previously included assurance-type warranties in total estimated project costs. Under ASC Topic 606, the estimated cost of satisfying assurance-type warranties is accrued in accordance with the guidance in ASC Topic 460, Guarantees. Upon adoption of ASC Topic 606, we removed estimated and actual warranty costs at the contract level and recognized a warranty liability and expense in direct proportion to the cost-to-cost method progress towards completion of the associated contract, which had a $0.6 million effect on our opening accumulated deficit balance at January 1, 2019.

The Company also offers service-type warranties on certain construction-type projects. These service-type warranties were not accounted for as a separate performance obligation prior to the adoption of ASC Topic 606. Upon adoption of ASC Topic 606, we allocated a portion of the contract's transaction price to the service-type warranty based on its estimated standalone selling price. The accounting for service-type warranties under ASC Topic 606 did not have a material impact on the condensed consolidated financial statements.

In addition, as of January 1, 2019, we began to separately present contract assets and liabilities on the consolidated balance sheets. Contract assets include amounts due under contractual retainage provisions that were previously included in accounts receivable as well as costs and estimated earnings in excess of billings on uncompleted contracts that were previously separately presented. Contract liabilities include billings in excess of costs and estimated earnings on uncompleted contracts that were previously separately presented and provisions for losses. See Note 5 - Contract Assets and Liabilities for further information.

8

The adoption of ASC Topic 606 had no impact on the cash flows provided by operating activities in the Company's condensed consolidated statements of cash flows.

Notes 2, 4, 5, and 16 include additional information relating to our adoption of ASC Topic 606. Note 12 includes information regarding our revenue disaggregated by segment.

Refer to the section, Effects of Adoption of ASC 606 and ASC 842 on Condensed Consolidated Financial Statements, below for additional disclosures around the quantitative impacts that the adoption of ASC Topic 606 had on our condensed consolidated financial statements.

New Leasing Standard

In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-02, Leases (Topic 842), as amended and supplemented by subsequent ASUs (collectively, “ASC Topic 842”). ASC Topic 842 amends the existing guidance in Accounting Standards Codification (“ASC”) 840, Leases. This ASU requires, among other things, the recognition of lease right-of-use (“ROU”) assets and lease liabilities by lessees for those leases currently classified as operating leases. Effective December 31, 2019, management adopted ASC Topic 606 for the annual and quarterly periods beginning after January 1, 2019 using a modified retrospective transition approach. The financial information for the quarter-ended June 30, 2019 has been recast to conform to the new standard.

The Company elected the package of practical expedients which provides relief from having to reassess (1) whether any expired or existing contracts contain leases, (2) lease classification (as operating or financing) for any expired or existing leases, and (3) initial direct costs for any existing leases. The Company also elected not to separate non-lease components from lease components and did not elect the hindsight practical expedient.

The adoption of ASC Topic 842 had no impact to the Company's condensed consolidated statements of operations or the consolidated cash flows provided by operating and financing activities in the Company's condensed consolidated statements of cash flows.

Refer to Note 13 - Leases for additional information regarding the impact of the adoption of ASC Topic 842 on the Company's financial position.

Additionally, refer to the section, Effects of Adoption of ASC 606 and ASC 842 on Condensed Consolidated Financial Statements, below for additional disclosures around the quantitative impacts that the adoption of ASC Topic 842 had on our condensed consolidated financial statements.

Effects of Adoption of ASC 606 and ASC 842 on Condensed Consolidated Financial Statements

The effect of the changes made to the Company's condensed consolidated June 30, 2019 balance sheet and condensed consolidated statement of operations for the three and six month periods ended June 30, 2019 for the adoption of ASC Topic 606 and ASC Topic 842 were as follows:

9

CONDENSED CONSOLIDATED BALANCE SHEET
(Unaudited)
(in thousands)	Previously Reported Balance as of June 30, 2019(a)		Adjustments due to ASC Topic 606		Adjustments due to ASC Topic 842		Balance as of June 30, 2019 (As Recast)
Assets
Accounts receivable, net (b)	142,761		(31,236	)	—		111,525
Contract assets	—		68,285		—		68,285
Costs and estimated earnings in excess of billings on uncompleted contracts	36,030		(36,030	)	—		—
Other current assets	4,637		1		—		4,638
Operating lease right-of-use assets (c)	—		—		22,685		22,685
Deferred tax asset	4,170		(207	)	—		3,963
Liabilities
Contract liabilities	—		44,131		—		44,131
Billings in excess of costs and estimated earnings on uncompleted contracts	46,536		(46,536	)	—		—
Accrued expenses and other current liabilities	24,575		2,663		—		27,238
Current portion of long-term debt	2,173		—		62		2,235
Current operating lease liabilities (c)	—		—		3,824		3,824
Long-term debt	39,983		—		65		40,048
Long-term operating lease liabilities (c)	—		—		19,656		19,656
Other long-term liabilities	2,498		—		(794	)	1,704
Stockholders' Equity
Accumulated deficit	(7,782	)	555		(128	)	(7,355	)

(a) Balances as previously reported on the Company's Quarterly Report on Form 10-Q for the quarter ended June 30, 2019.

(b) Prior to the adoption of ASC Topic 606, retainage receivable was included within accounts receivable, net.

(c) Prior to the adoption of ASC Topic 842, operating lease right-of-use assets and current and long-term operating lease liabilities were not recorded on the Company's condensed consolidated balance sheets.

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CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS
(Unaudited)
	Three months ended June 30, 2019
(in thousands)	Previously Reported(a)			Adjustments due to ASC Topic 606			Adjustments due to ASC Topic 842		As Recast
Revenue
Construction	$	104,925		$	(166	)	—		$	104,759
Service	27,828			16			—		27,844
Total revenue	132,753			(150		)	—		132,603
Cost of revenue
Construction	94,503			(427		)	—		94,076
Service	20,849			(17		)	—		20,832
Total cost of revenue	115,352			(444		)	—		114,908
Gross profit	17,401			294			—		17,695
Operating expenses:
Selling, general and administrative expenses	17,079			—			—		17,079
Amortization of intangibles	175			—			—		175
Total operating expenses	17,254			—			—		17,254
Operating income	147			294			—		441
Other income (expenses):
Interest expense, net	(1,597		)	—			—		(1,597		)
Gain on disposition of property and equipment	9			—			—		9
Loss on debt extinguishment	(513		)	—			—		(513		)
Loss on change in fair value of warrant liability	(103		)	—			—		(103		)
Total other expenses	(2,204		)	—			—		(2,204		)
Income before income taxes	(2,057		)	294			—		(1,763		)
Income tax provision (benefit)	(553		)	79			—		(474		)
Net loss	$	(1,504	)	$	215		$	—	$	(1,289	)

(a) Balances as previously reported on the Company's Quarterly Report on Form 10-Q for the three months ended June 30, 2019.

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CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS
(Unaudited)
	Six months ended June 30, 2019
(in thousands)	Previously Reported(a)			Adjustments due to ASC Topic 606			Adjustments due to ASC Topic 842		As Recast
Revenue
Construction	$	209,599		$	(380	)	$	—	$	209,219
Service	57,105			26			—		57,131
Total revenue	266,704			(354		)	—		266,350
Cost of revenue
Construction	185,864			(244		)	—		185,620
Service	43,406			5			—		43,411
Total cost of revenue	229,270			(239		)	—		229,031
Gross profit	37,434			(115		)	—		37,319
Operating expenses:
Selling, general and administrative expenses	33,124			—			—		33,124
Amortization of intangibles	350			—			—		350
Total operating expenses	33,474			—			—		33,474
Operating income	3,960			(115		)	—		3,845
Other income (expenses):
Interest expense, net	(2,430		)	—			—		(2,430		)
Gain on disposition of property and equipment	21			—			—		21
Loss on debt extinguishment	(513		)	—			—		(513		)
Loss on change in fair value of warrant liability	(103		)	—			—		(103		)
Total other expenses	(3,025		)	—			—		(3,025		)
Income before income taxes	935			(115		)	—		820
Income tax provision (benefit)	293			(32		)	—		261
Net income	$	642		$	(83	)	$	—	$	559

(a) Balances as previously reported on the Company's Quarterly Report on Form 10-Q for the six months ended June 30, 2019.

Recent Accounting Pronouncements

In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments, which introduced an expected credit loss methodology for the measurement and recognition of credit losses on most financial instruments, including trade receivables and off-balance sheet credit exposure. Under this guidance, an entity is required to consider a broader range of information to estimate expected credit losses, which may result in earlier recognition of losses. This ASU also requires disclosure of information regarding how a company developed its allowance, including changes in the factors that influenced management’s estimate of expected credit losses and the reasons for those changes. The guidance is effective for smaller reporting companies on January 1, 2023 with early adoption permitted. The adoption of this standard will be through a cumulative-effect adjustment to retained earnings as of the effective date. Based on our historical experience, the Company does not expect that this pronouncement will have a significant impact in its financial statements or on the estimate of the allowance for doubtful accounts.

In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740), which affects general principles within Topic 740, and is meant to simplify and reduce the cost of accounting for income taxes. It removes certain exceptions to the general principles in Topic 740 and simplifies areas including franchise taxes that are partially based on income, transactions with a government that result in a step up in the tax basis of goodwill, the incremental approach for intraperiod tax allocation, interim period income tax accounting for year-to-date losses that exceed anticipated losses and enacted changes in tax laws in interim periods. The changes are effective for annual periods beginning after December 15, 2020. Management is currently assessing the impact of this pronouncement on its condensed consolidated financial statements.

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In March 2020, the FASB issued ASU 2020-03, Codification Improvements to Financial Instruments, which makes improvements to financial instruments guidance. The amendments make the Codification easier to understand and easier to apply by eliminating inconsistencies and providing clarifications. With regard to amendments related to Issue 1, Issue 2, Issue 4 and Issue 5, for public business entities, the amendments are effective upon issuance of this final ASU. With regard to amendments related to Issue 6 and Issue 7, for entities that have not yet adopted the guidance in Update 2016-13, the effective dates and the transition requirements for these amendments are the same as the effective date and transition requirements in ASU 2016-13. For entities that have adopted the guidance in ASU 2016-13, the amendments are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. We do not expect the adoption of this pronouncement to have a material impact on our condensed consolidated financial statements or presentation thereof.

The FASB also issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting in March 2020. The new guidance provides optional expedients for applying GAAP to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. The guidance is effective prospectively as of March 12, 2020 through December 31, 2022 and interim periods within those fiscal years. We do not expect the adoption of this ASU to have a material impact on our condensed consolidated financial statements or presentation thereof.

Note 4 – Accounts Receivable and Allowance for Doubtful Accounts

Accounts receivable and the allowance for doubtful accounts are comprised of the following:

(in thousands)	June 30, 2020			December 31, 2019
Accounts receivable - trade	$	101,717		$	105,373
Allowance for doubtful accounts	(266		)	(306		)
Accounts receivable, net	$	101,451		$	105,067

Note 5 – Contract Assets and Liabilities

The Company classifies contract assets and liabilities that may be settled beyond one year from the balance sheet date as current, consistent with the length of time of the Company’s project operating cycle.

Contract assets include amounts due under retainage provisions and costs and estimated earnings in excess of billings. The components of the contract asset balances as of the respective dates were as follows:

(in thousands)	June 30, 2020		December 31, 2019		Change
Contract assets
Costs in excess of billings and estimated earnings	$	39,898	$	44,315	$	(4,417	)
Retainage receivable	32,389		32,873		(484		)
Total contract assets	$	72,287	$	77,188	$	(4,901	)

Retainage receivable represents amounts invoiced to customers where payments have been partially withheld, typically 10%, pending the completion of certain milestones, satisfaction of other contractual conditions or the completion of the project. Retainage agreements vary from project to project and balances could be outstanding for several months or years depending on a number of circumstances such as contract-specific terms, project performance and other variables that may arise as the Company makes progress towards completion.

Contract assets represent the excess of contract costs and profits (or contract revenue) over the amount of contract billings to date and are classified as a current asset. Contract assets result when either: 1) the appropriate contract revenue amount has been recognized over time in accordance with ASC Topic 606, but a portion of the revenue recorded cannot be currently billed due to the billing terms defined in the contract, or 2) costs are incurred related to certain claims and unapproved change orders. Claims occur when there is a dispute regarding both a change in the scope of work and the price associated with that change. Unapproved change orders occur when a change in the scope of work results in additional work being performed before the parties have agreed on the corresponding change in the contract price. The Company routinely estimates recovery related to claims and unapproved change orders as a form of variable consideration at the most likely amount it expects to receive and to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is resolved. Claims and unapproved change orders are billable upon the agreement and resolution between the contractual parties and after the execution of contractual amendments. Increases in claims and

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unapproved change orders typically result from costs being incurred against existing or new positions; decreases normally result from resolutions and subsequent billings.

The current estimated net realizable value on such claims and unapproved change orders as recorded in contract assets and contract liabilities in the condensed consolidated balance sheets was $39.4 million and $38.4 million as of June 30, 2020 and December 31, 2019, respectively. The Company anticipates that the majority of such amounts will be approved or executed within one year. The resolution of these claims and unapproved change orders may require litigation or other forms of dispute resolution proceedings.

Contract liabilities include billings in excess of contract costs and provisions for losses. The components of the contract liability balances as of the respective dates were as follows:

(in thousands)	June 30, 2020		December 31, 2019		Change
Contract liabilities
Billings in excess of costs and estimated earnings	$	57,874	$	40,662	$	17,212
Provisions for losses	750		1,708		(958		)
Total contract liabilities	$	58,624	$	42,370	$	16,254

Billings in excess of costs represent the excess of contract billings to date over the amount of contract costs and profits (or contract revenue) recognized to date. The balance may fluctuate depending on the timing of contract billings and the recognition of contract revenue.

Provisions for losses are recognized in the condensed consolidated statements of operations at the uncompleted performance obligation level for the amount of total estimated losses in the period that evidence indicates that the estimated total cost of a performance obligation exceeds its estimated total revenue.

The net (overbilling) underbilling position for contracts in process consist of the following:

(in thousands)	June 30, 2020			December 31, 2019
Revenue earned on uncompleted contracts	$	755,456		$	726,215
Less: Billings to date	(773,432		)	(722,562		)
Net (overbilling) underbilling	$	(17,976	)	$	3,653
(in thousands)	June 30, 2020			December 31, 2019
Costs in excess of billings and estimated earnings	$	39,898		$	44,315
Billings in excess of costs and estimated earnings	(57,874		)	(40,662		)
Net (overbilling) underbilling	$	(17,976	)	$	3,653

We recorded revisions in our contract estimates for certain construction projects. For projects having revisions with a material gross profit impact, this resulted in gross profit write downs on four construction projects of $1.5 million for the three months ended June 30, 2020, two of which were within the Southern California region for a total of $0.7 million. No material project revisions resulting in gross profit write ups were recorded for the three months ended June 30, 2020.

For the six months ended June 30, 2020, we recorded revisions in our contract estimates for certain construction projects. We recorded gross profit write downs on eight construction projects and two gross profit write ups on construction projects for the six months ended June 30, 2020, each of which had a material gross profit impact, for an aggregate revision of $5.2 million and $1.2 million, respectively.

For the three months ended June 30, 2019, we recorded revisions in our contract estimates for certain construction and service projects. For individual projects with revisions having a material gross profit impact, this resulted in gross profit write ups totaling $0.3 million on one construction project and $0.3 million on one service project. We also recorded revisions in contract estimates that resulted in project write downs totaling $1.9 million on three construction projects for our Southern California region.

For the six months ended June 30, 2019, we recorded revisions in our contract estimates for certain construction and service projects. For individual projects with revisions having a material gross profit impact, this resulted in gross profit write ups totaling

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$3.0 million on six projects, including three projects totaling $1.0 million for our Mid-Atlantic region. One of these project write ups in the amount of $1.4 million resulted from our settlement of a significant Michigan project. We also recorded revisions in contract estimates that resulted in project write downs totaling $3.5 million on seven projects, including four projects totaling $2.2 million in our Southern California region and one project for $0.5 million in our Mid-Atlantic region. Revisions in our contract estimates on one service project resulted in a gross profit write up of $0.3 million on a Mid-Atlantic project during this period and one Southern California project resulted in a gross profit write down of $0.3 million.

Note 6 – Goodwill and Intangibles

Goodwill was $6.1 million at June 30, 2020 and December 31, 2019. The goodwill is associated with the Company's Service segment. Intangible assets are comprised of the following:

(in thousands)	Gross carrying amount		Accumulated amortization			Net intangible assets, excluding goodwill
June 30, 2020
Amortized intangible assets:
Customer Relationships – Service	$	4,710	$	(2,906	)	$	1,804
Favorable Leasehold Interests	530		(400		)	130
Total amortized intangible assets	5,240		(3,306		)	1,934
Unamortized intangible assets:
Trade Name	9,960		—			9,960
Total unamortized intangible assets	9,960		—			9,960
Total amortized and unamortized assets, excluding goodwill	$	15,200	$	(3,306	)	$	11,894

(in thousands)	Gross carrying amount		Accumulated amortization			Net intangible assets, excluding goodwill
December 31, 2019
Amortized intangible assets:
Customer Relationships – Service	$	4,710	$	(2,655	)	$	2,055
Favorable Leasehold Interests	530		(234		)	296
Total amortized intangible assets	5,240		(2,889		)	2,351
Unamortized intangible assets:
Trade Name	9,960		—			9,960
Total unamortized intangible assets	9,960		—			9,960
Total amortized and unamortized assets, excluding goodwill	$	15,200	$	(2,889	)	$	12,311

The definite-lived intangible assets are amortized over the period the Company expects to receive the related economic benefit, which for customer relationships is based upon estimated future net cash inflows. The Company has previously determined that its trade name has an indefinite useful life. The Limbach trade name has been in existence since the Company’s founding in 1901 and therefore is an established brand within the industry.

Total amortization expense for these amortizable intangible assets was $0.3 million and $0.4 million for the three and six months ended June 30, 2020 and $0.2 million and $0.4 million for the three and six months ended June 30, 2019.

The Company did not recognize any impairment charges on its goodwill or intangible assets for the three and six months ended June 30, 2020 or June 30, 2019.

Note 7 – Debt

Long-term debt consists of the following obligations as of:

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(in thousands)	June 30, 2020			December 31, 2019
2019 Refinancing Term Loan - term loan payable in quarterly installments of principal, (commencing in September 2020) plus interest through April 2022	$	41,000		$	41,000
Finance leases – collateralized by vehicles, payable in monthly installments of principal, plus interest ranging from 4.85% to 6.45% through 2025	6,285			6,585
Total debt	47,285			47,585
Less - Current portion of long-term debt	(6,414		)	(4,425		)
Less - Unamortized discount and debt issuance costs	(3,350		)	(4,292		)
Long-term debt	$	37,521		$	38,868

Credit Agreement

In 2016, Limbach Facility Services, LLC (“LFS”), a subsidiary of the Company, entered into the Credit Agreement (as amended, the “Credit Agreement”). The Credit Agreement consisted of a $25.0 million revolving line of credit (the “Credit Agreement revolver”) and a $24.0 million term loan (the “Credit Agreement term loan”), both with a maturity date of July 20, 2021. The Credit Agreement was collateralized by substantially all assets of LFS and its subsidiaries. Principal payments of $900,000 on the Credit Agreement term loan were due at the end of each quarter, beginning September 30, 2018, through maturity of the loan, with any remaining amounts due at maturity. Outstanding borrowings on both the Credit Agreement term loan and the Credit Agreement revolver bore interest at either the Base Rate (as defined in the Credit Agreement) or LIBOR (as defined in the Credit Agreement), plus the applicable additional margin, payable monthly. Mandatory prepayments were required upon the occurrence of certain events, including, among other things and subject to certain exceptions, equity issuances, changes of control of the Company, certain debt issuances, assets sales and excess cash flow.

The Credit Agreement included restrictions on, among other things and subject to certain exceptions, the Company and its subsidiaries’ ability to incur additional indebtedness, pay dividends or make other distributions, redeem or purchase capital stock, make investments and loans and enter into certain transactions, including selling assets, engaging in mergers or acquisitions and entering into transactions with affiliates. Loans under the Credit Agreement bore interest, at the borrower's option, at either Adjusted LIBOR (“Eurodollar”) or a Base Rate, in each case, plus an applicable margin. The applicable margin with respect to any Base Rate loan was 5.00% per annum and with respect to a Eurodollar loan was 6.00% per annum.

The borrower was required to make principal payments on the Bridge Term Loan in the amount of $250,000 on the last business day of March, June, September and December of each year. The Bridge Term Loan had a maturity date of April 12, 2019. The Bridge Term Loan was guaranteed by the same guarantors (including Limbach Holdings, Inc., Limbach Facility Services LLC, Limbach Holdings LLC, Limbach Company LLC, Limbach Company LP, Harper Limbach LLC and Harper Limbach Construction LLC) and secured (on a pari passu basis) by the same collateral as the other loans under the Credit Agreement.

The equity interests of the Company’s subsidiaries were pledged as security for the obligations under the Credit Agreement. The Credit Agreement included customary events of default, including, among other items, payment defaults, cross-defaults to other indebtedness, a change of control default and events of default with respect to certain material agreements. Additionally, with respect to the Company, an event of default would have been deemed to have occurred if the Company’s securities ceased to be registered with the SEC pursuant to Section 12(b) of the Exchange Act. In case of an event of default, the administrative agent would have been entitled to, among other things, accelerated payment of amounts due under the Credit Agreement, foreclose on the equity of the Company’s subsidiaries, and exercise all rights of a secured creditor on behalf of the lenders.

The additional margin applied to both the Credit Agreement revolver and Credit Agreement term loan were determined based on levels achieved under the Company’s senior leverage ratio covenant, which reflects the ratio of indebtedness divided by EBITDA for the most recently ended four quarters.

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The following is a summary of the additional margin and commitment fees payable on the available revolving credit commitment:

Level	Senior Leverage Ratio	Additional Margin for Base Rate loans		Additional Margin for Libor Rate loans		Commitment Fee
I	Greater than or equal to 2.50 to 1.00	3.00	%	4.00	%	0.50	%
II	Less than 2.50 to 1.00, but greater than or equal to 2.00 to 1.00	2.75	%	3.75	%	0.50	%
III	Less than 2.00 to 1.00, but greater than or equal to 1.50 to 1.00	2.50	%	3.50	%	0.50	%
IV	Less than 1.50 to 1.00	2.25	%	3.25	%	0.50	%

2019 Refinancing Agreement

On April 12, 2019 (the “Refinancing Closing Date”), LFS entered into a financing agreement (the “2019 Refinancing Agreement”) with the lenders thereto and Cortland Capital Market Services LLC, as collateral agent and administrative agent and CB Agent Services LLC, as origination agent (“CB”). The 2019 Refinancing Agreement consists of (i) a $40.0 million term loan (the “2019 Refinancing Term Loan”) and (ii) a new $25.0 million multi-draw delayed draw term loan (the “2019 Delayed Draw Term Loan” and, collectively with the 2019 Refinancing Term Loan, the “2019 Term Loans”). Proceeds from the 2019 Refinancing Term Loan were used to repay the then existing Credit Agreement, to pay related fees and expenses thereof and to fund working capital of the Borrowers (defined below). Management intends for proceeds of the 2019 Delayed Draw Term Loan to be used to fund permitted acquisitions under the 2019 Refinancing Agreement and related fees and expenses in connection therewith.

LFS, a wholly-owned subsidiary of the Company, and each of its subsidiaries are borrowers (the “Borrowers”) under the 2019 Refinancing Agreement. In addition, the 2019 Refinancing Agreement is guaranteed by the Company and LHLLC (each, a “Guarantor”, and together with the Borrowers, the “Loan Parties”).

The 2019 Refinancing Agreement is secured by a first-priority lien on the real property of the Loan Parties and a second-priority lien on substantially all other assets of the Loan Parties, behind the 2019 ABL Credit Agreement (as defined below). The respective lien priorities of the 2019 Refinancing Agreement and the 2019 ABL Credit Agreement are governed by an intercreditor agreement.

2019 Refinancing Agreement - Interest Rates and Fees

The interest rate on borrowings under the 2019 Refinancing Agreement is, at the Borrowers’ option, either LIBOR (with a 2.00% floor) plus 11.00% or a base rate (with a 3.00% minimum) plus 10.00%. At June 30, 2020, the interest rate in effect on the 2019 Refinancing Term Loan was 13.00%.

2019 Refinancing Agreement - Other Terms and Conditions

The 2019 Refinancing Agreement matures on April 12, 2022, subject to certain adjustment. Required amortization is $1.0 million per quarter commencing with the fiscal quarter ending September 30, 2020. There is an unused line fee of 2.0% per annum on the undrawn portion of the 2019 Delayed Draw Term Loan, and there is a make-whole premium on prepayments made prior to the 19-month anniversary of the Refinancing Closing Date. This make-whole provision guarantees that the Company will pay no less than 18 months’ applicable interest to the lenders under the 2019 Refinancing Agreement. The 2019 Refinancing Agreement contains representations and warranties, and covenants which are customary for debt facilities of this type. Unless the Required Lenders (as defined in the 2019 Refinancing Agreement) otherwise consent in writing, the covenants limit the ability of the Company and its restricted subsidiaries to, among other things, (i) incur additional indebtedness or issue preferred stock, (ii) pay dividends or make distributions to the Company’s stockholders, (iii) purchase or redeem the Company’s equity interests, (iv) make investments, (v) create liens on their assets, (vi) enter into transactions with the Company’s affiliates, (vii) sell assets and (viii) merge or consolidate with, or dispose of substantially all of the Company’s assets to, other companies.

In addition, the 2019 Refinancing Agreement includes customary events of default and other provisions that could require all amounts due thereunder to become immediately due and payable, either automatically or at the option of the lenders, if the Company fails to comply with the terms of the 2019 Refinancing Agreement or if other customary events occur.

Furthermore, the 2019 Refinancing Agreement also contains two financial maintenance covenants for the 2019 Refinancing Term Loan, including a requirement to have sufficient collateral coverage of the aggregate outstanding principal amount of the 2019 Refinancing Term Loans and as of the last day of each month for the total leverage ratio of the Company and its Subsidiaries (the “Total Leverage Ratio ”) not to exceed an amount beginning at 4.25 to 1.00 through June 30, 2019, and stepping down to 2.00 to

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1.00 effective July 1, 2021. From July 1, 2019 through September 30, 2019, the Total Leverage Ratio may not exceed 4.00 to 1.00. As of August 31, 2019, the Company’s Total Leverage Ratio for the preceding twelve consecutive fiscal month period was 4.61 to 1.00, which did not meet the requirement for such ratio not to exceed 4.00 to 1.00. As of September 30, 2019, the Company’s Total Leverage Ratio for the preceding twelve consecutive fiscal month period was 2.85 to 1.00, which was in compliance with the 4.00 to 1.00 requirement. The lender has waived the event of default arising from this noncompliance as of August 31, 2019, while reserving its rights with respect to covenant compliance in future months. In addition, the parties to the 2019 Refinancing Agreement entered into an amendment which, among other changes, revises the maximum permitted Total Leverage Ratio, starting at 3.30 to 1.00 on October 1, 2019 with a peak ratio of 4.25 during March 2020 along with varying monthly rates culminating in the lowest Total Leverage Ratio of 2.00 to 1.00 on April 1, 2021 through the term of such agreement. The 2019 Refinancing Agreement contains a post-closing covenant requiring the remediation of the Company’s material weakness, as described in Item 9A of its 2018 Annual Report on Form 10-K, no later than December 31, 2020 and to provide updates as to the progress of such remediation, provided that, if such remediation has not been completed on or prior to December 31, 2019, (x) the Company shall be required to pay the post-closing fee pursuant to the terms of the Origination Agent Fee Letter (as defined in the 2019 Refinancing Agreement) and (y) the applicable margin shall be increased by 1.00% per annum for the period from January 1, 2020 until the date at which the material weakness is no longer disclosed or required to be disclosed in the Company’s SEC filings or audited financial statements of the Company or related auditor’s reports. As of December 31, 2019, the Company fully remediated its material weakness and the Company removed from its SEC filings disclosure of such material weakness.

In connection with the 2019 Refinancing Amendment Number One and Waiver, dated November 14, 2019, the parties amended certain provisions of the 2019 Refinancing Agreement, including, among other changes to: (i) require, commencing October 1, 2019, a 3.00% increase in the interest rate on borrowings under the 2019 Refinancing Agreement; (ii) require the approval of CB and, generally, the lenders representing at least 50.1% of the aggregate undrawn term loan commitment or unpaid principal amount of the term loans, prior to effecting any permitted acquisition; (iii) revise the maximum permitted Total Leverage Ratio, starting at 3.30 to 1.00 on October 1, 2019 with a peak ratio of 4.25 during March 2020 along with varying monthly rates culminating in the lowest Total Leverage Ratio of 2.00 to 1.00 on April 1, 2021 and thereafter through the term of the 2019 Refinancing Agreement; and (iv) require the liquidity of the loan parties, which is generally calculated by adding (a) unrestricted cash on hand of the Loan Parties maintained in deposit accounts subject to control agreements granting control to the collateral agent for the 2019 ABL Credit Agreement, to (b) the difference between (1) the lesser of (x) $15 million, as adjusted from time to time, and (y) 75% of certain customer accounts resulting from the sale of goods or services in the ordinary course of business minus certain reserves established by the Administrative Agent and (2) the sum of (x) the outstanding principal balance of all revolving loans under the 2019 ABL Credit Agreement plus (y) the aggregate undrawn available amount of all letters of credit then outstanding plus the amount of any obligations that arise from any draw against any letter of credit that have not been reimbursed by the borrowers or funded with a revolving loan under the 2019 ABL Credit Agreement (the “Loan Parties Liquidity”), as of the last day of any fiscal month ending on or after November 30, 2019, of at least $10,000,000. As a condition to executing the 2019 Refinancing Amendment Number One and Waiver, the loan parties will be required to pay a non-refundable waiver fee of $400,000 and a non-refundable amendment fee of $1,000,000 (the “PIK First Amendment Fee”, which shall be paid in kind by adding the PIK First Amendment Fee to the outstanding principal amount of the term loan under the 2019 Refinancing Agreement as additional principal obligations thereunder on and as of the effective date 2019 Refinancing Amendment Number One and Waiver).

2019 Refinancing Agreement - CB Warrants

In connection with the 2019 Refinancing Agreement, on the Refinancing Closing Date, the Company issued to CB and the other lenders under the 2019 Refinancing Agreement warrants (the “CB Warrants”) to purchase up to a maximum of 263,314 shares of the Company's common stock at an exercise price of $7.63 per share subject to certain adjustments, including for stock dividends, stock splits or reclassifications. The actual number of shares of common stock into which the CB Warrants will be exercisable at any given time will be equal to: (i) the product of (x) the number of shares equal to 2% of the Company’s issued and outstanding shares of common stock on the Refinancing Closing Date on a fully diluted basis and (y) the percentage of the total 2019 Delayed Draw Term Loan made as of the exercise date, minus (ii) the number of shares previously issued under the CB Warrants. As of the Refinancing Closing Date through June 30, 2020, no amounts had been drawn on the 2019 Delayed Draw Term Loan, so no portion of the CB Warrants was exercisable. The CB Warrants may be exercised for cash or on a “cashless basis,” subject to certain adjustments, at any time after the Refinancing Closing Date until the expiration of such warrant at 5:00 p.m., New York time, on the earlier of (i) the five (5) year anniversary of the Refinancing Closing Date, or (ii) the liquidation of the Company. 

Accounting for the 2019 Term Loans and CB Warrants

The CB Warrants represent a freestanding financial instrument that is classified as a liability because the CB Warrants meet the definition of a derivative instrument that does not meet the equity scope exception (i.e., the CB Warrants are not indexed to the entity’s own equity). In addition, the material weakness penalty described above was evaluated as an embedded derivative liability and bifurcated from the 2019 Term Loans as it represents a non-credit related embedded feature that provides for net settlement.

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Both the CB Warrants liability and the embedded derivative liability are required to be initially and subsequently measured at fair value. The initial fair values of the CB Warrants liability and the embedded derivative liability approximated $0.9 million and $0.4 million, respectively, on the Refinancing Closing Date. The Company estimated these fair values by using the Black-Scholes-Merton option pricing model and a probability-weighted discounted cash flow approach.

The CB Warrants liability is included in other long-term liabilities. The Company remeasured the fair value of the CB Warrants liability as of June 30, 2020 and recorded any adjustments as other income (expense). At June 30, 2020 and December 31, 2019, the CB Warrants liability was $0.3 million and $0.4 million, respectively. For the three and six months ended June 30, 2020, respectively, the Company recorded other income of $0.1 million and other expenses of $0.1 million to reflect the change in fair value of the CB Warrants liability. For the three and six months ended June 30, 2019, the Company recorded other income of $0.1 million for both periods. At June 30, 2020 and December 31, 2019, the embedded derivative liability was $0.0 million as the Company remediated the material weakness associated with the embedded derivative as of December 31, 2019, and the $0.4 million embedded derivative liability was fully reversed and recorded as other income at that date.

The proceeds for the 2019 Term Loan were first allocated to the CB Warrants liability and embedded derivative liability based on their respective fair values with a corresponding amount of $1.3 million recorded as a debt discount to the 2019 Term Loans. In addition, the Company incurred approximately $2.5 million of debt issuance costs for the 2019 Term Loans that have also been recorded as a debt discount. The combined debt discount from the CB Warrants liability, embedded derivative liability and the debt issuance costs are being amortized into interest expense over the term of the 2019 Term Loans using the effective interest method. The Company recorded interest expense for the amortization of the CB Warrants liability and embedded derivative debt discounts of $0.1 million and $0.2 million for the three and six months ended June 30, 2020, respectively, and recorded an additional $0.4 million and $0.7 million of interest expense for the amortization of the debt issuance costs for the three and six months ended June 30, 2020, respectively. 

The Company recorded interest expense for the amortization of the CB Warrants liability and embedded derivative debt discounts of $0.1 million for the three and six months ended June 30, 2019 and recorded an additional $0.2 million of interest expense for the amortization of the debt issuance costs for the three and six months ended June 30, 2019, respectively. 

2019 ABL Credit Agreement

On the Refinancing Closing Date, LFS also entered into a financing agreement with the lenders thereto and Citizens Bank, N.A., as collateral agent, administrative agent and origination agent (the “2019 ABL Credit Agreement” and, together with the 2019 Refinancing Agreement, the “Refinancing Agreements”). The 2019 ABL Credit Agreement consists of a $15.0 million revolving credit facility (the “2019 Revolving Credit Facility”). Proceeds of the 2019 Revolving Credit Facility may be used for general corporate purposes. On the Refinancing Closing Date, the Company had nothing drawn on the ABL Credit Agreement and $14.0 million of available borrowing capacity thereunder (net of a $1.0 million reserve imposed by the lender).

The Borrowers and Guarantors under the 2019 ABL Credit Agreement are the same as under the 2019 Refinancing Agreement.

The 2019 ABL Credit Agreement is secured by a second-priority lien on the real property of the Loan Parties (behind the 2019 Refinancing Agreement) and a first-priority lien on substantially all other assets of the Loan Parties.

2019 ABL Credit Agreement - Interest Rates and Fees

The interest rate on borrowings under the 2019 ABL Credit Agreement is, at the Borrowers’ option, either LIBOR (with a 2.0% floor) plus an applicable margin ranging from 3.00% to 3.50% or a base rate (with a 3.0% minimum) plus an applicable margin ranging from 2.00% to 2.50%. At June 30, 2020 and June 30, 2019, the interest rates in effect on the 2019 ABL Credit Agreement were 5.25% and 7.50%, respectively.

2019 ABL Credit Agreement - Other Terms and Conditions

The 2019 ABL Credit Agreement matures on April 12, 2022. There is an unused line fee ranging from 0.250% to 0.375% per annum on undrawn amounts.

The 2019 ABL Credit Agreement contains representations and warranties, and covenants which are customary for debt facilities of this type. Unless the Required Lenders otherwise consent in writing, the covenants limit the ability of the Company and its restricted subsidiaries to, among other things, generally, to (i) incur additional indebtedness or issue preferred stock, (ii) pay dividends or make distributions to the Company’s stockholders, (iii) purchase or redeem the Company’s equity interests, (iv) make investments, (v) create liens on their assets, (vi) enter into transactions with the Company’s affiliates, (vii) sell assets other than

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in the ordinary course of business or another permitted disposition of assets and (viii) merge or consolidate with, or dispose of substantially all of the Company’s assets to, other companies.

The 2019 ABL Credit Agreement includes customary events of default and other provisions that could require all amounts due thereunder to become immediately due and payable, either automatically or at the option of the lenders, if the Company fails to comply with the terms of the 2019 ABL Credit Agreement or if other customary events occur.

The 2019 ABL Credit Agreement also contains a financial maintenance covenant for the 2019 Revolving Credit Facility, which is a requirement for the Total Leverage Ratio of the Company and its Subsidiaries not to exceed an amount beginning at 4.00 to 1.00 through September 30, 2019, and stepping down to 1.75 to 1.00 effective July 1, 2021. As of August 31, 2019, the Company’s Total Leverage Ratio for the preceding twelve consecutive fiscal month period was 4.61 to 1.00, which did not meet the requirement for such ratio not to exceed 4.00 to 1.00. As of September 30, 2019, the Company’s Total Leverage Ratio for the preceding twelve consecutive fiscal month period was 2.85 to 1.00, which was in compliance with the 4.00 to 1.00 requirement. The lender has waived the event of default arising from this noncompliance as of August 31, 2019, while reserving its rights with respect to covenant compliance in future months. In addition, the parties to the 2019 ABL Credit Agreement entered into an amendment which, among other changes revises the maximum permitted Total Leverage Ratio, starting at 3.30 to 1.00 on October 1, 2019 with a peak ratio of 4.25 during March 2020 along with varying monthly rates culminating in the lowest Total Leverage Ratio of 2.00 to 1.00 on April 1, 2021 through the term of such agreement.

In connection with the 2019 ABL Credit Amendment Number One and Waiver, the parties amended certain provisions of the 2019 ABL Credit Agreement, including, among other changes to (i) require the approval of the origination agent and, generally, the lenders representing at least 50.1% of the aggregate undrawn revolving loan commitment or unpaid principal amount of the term loans, prior to effecting any permitted acquisition; (ii) revise the maximum permitted Total Leverage Ratio, starting at 3.30 to 1.00 on October 1, 2019 with a peak ratio of 4.25 during March 2020 along with varying monthly rates culminating in the lowest Total Leverage Ratio of 2.00 to 1.00 on April 1, 2021 through the term of the 2019 ABL Credit Agreement; and (iii) require the Loan Parties Liquidity as of the last day of any fiscal month ending on or after November 30, 2019, of at least $10,000,000, as described above in the Amendment Number One to 2019 Refinancing Agreement and Waiver. As a condition to executing the 2019 ABL Credit Amendment Number One and Waiver, the loan parties was required to pay a non-refundable waiver fee of $7,500.

Accounting for the 2019 ABL Credit Agreement

As of June 30, 2020 and December 31, 2019, the Company had no amounts drawn on the 2019 ABL Credit Agreement. In addition, the Company incurred approximately $0.9 million of debt issuance costs for the 2019 ABL Credit Agreement that have been recorded as a non-current deferred asset. The deferred asset is being amortized into interest expense over the term of the 2019 Term ABL Credit Agreement using the effective interest method. The Company recorded interest expense of $0.1 million for the amortization the debt issuance costs for the three and six months ended June 30, 2020 and the three and six months ended June 30, 2019.

Note 8 – Equity

The Company’s second amended and restated certificate of incorporation currently authorizes the issuance of 100,000,000 shares of common stock, par value $0.0001, and 1,000,000 shares of preferred stock, par value $0.0001.

At June 30, 2020 and December 31, 2019, the Company had outstanding warrants exercisable for 4,576,799 shares of common stock, consisting of: (i) 4,600,000 warrants issued as part of units in its initial public offering, each of which is exercisable for one-half of one share of common stock at an exercise price of $11.50 per whole share (“Public Warrants”); (ii) 198,000 warrants, each exercisable for one-half of one share of common stock at an exercise price of $5.75 per half share ($11.50 per whole share) (“Sponsor Warrants”); (iii) 600,000 warrants, each exercisable for one share of common stock at an exercise price of $15.00 per share (“$15 Exercise Price Warrants”); (iv) 631,119 warrants, each exercisable for one share of common stock at an exercise price of $12.50 per share (“Merger Warrants”); and (v) 946,680 warrants, each exercisable for one share of common stock at an exercise price of $11.50 per share (“Additional Merger Warrants”). The Public Warrants, Sponsor Warrants and $15 Exercise Price Warrants were issued under a warrant agreement dated July 15, 2014, between Continental Stock Transfer & Trust Company, as warrant agent, and the Company. The Merger Warrants and Additional Merger Warrants were issued to the sellers of LHLLC.

On July 21, 2014, a total of 300,000 Unit Purchase Options (“UPOs”) were issued by 1347 Capital to a representative of the underwriter and its designees. The 17,100 UPOs that were outstanding at June 30, 2019 expired on July 21, 2019. Each UPO consisted of one share of common stock, one right to purchase one-tenth of one share of common stock and one warrant to purchase one-half of one share of common stock at an exercise price of $11.50 per full share, exercisable on a cash or cashless basis.

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In 2020, the Compensation Committee of the Board of Directors of the Company granted 118,633 restricted stock units (“RSUs”) and 96,500 performance-based RSUs (“PRSUs”) under the Limbach Holdings, Inc. Omnibus Incentive Plan (as amended, the “Omnibus Incentive Plan”) to certain executive officers, non-executive employees and non-employee directors of the Company in the form of an annual ongoing long-term incentive RSU award (the “2020 Ongoing LTI RSU Award”), and an ongoing RSU award to non-employee directors (“2020 Ongoing Director RSU Award”). The 2020 Ongoing LTI RSU Award and 2020 Ongoing Director RSU Award only contains service-based awards.

On May 24, 2020 the Board of Directors approved further amendments to the Company's amended and restated Omnibus Incentive Plan to increase the number of shares of the Company's common stock that may be issued pursuant to awards by 500,000, for a total of 1,650,000 shares, and extend the term of the plan so that it will expire on the tenth anniversary of the date the stockholders approve the Amended Incentive Plan. The amendments were approved by the Company's stockholders at the Annual Meeting held on July 14, 2020.

See Note 17 - Management Incentive Plans for RSUs granted, vested, forfeited and remaining unvested and Note 18 - Subsequent Events.

Upon approval of the Company's stockholders on May 30, 2019, the Company adopted the Limbach Holdings, Inc. 2019 Employee Stock Purchase Plan (“the ESPP”). On January 1, 2020, the ESPP went into effect. The ESPP enables eligible employees, as defined by the ESPP, the right to purchase the Company's common stock through payroll deductions during consecutive subscription periods at a purchase price of 85% of the fair market value of a common share at the end of each offering period. Annual purchases by participants are limited to the number of whole shares that can be purchased by an amount equal to ten percent of the participant's compensation or $5,000, whichever is less. Each offering period of the ESPP lasts six months, commencing on January 1 and July 1 of each year.  The amounts collected from participants during a subscription period are used on the exercise date to purchase full shares of common stock.  Participants may withdraw from an offering before the exercise date and obtain a refund of amounts withheld through payroll deductions. Compensation cost, representing the 15% discount applied to the fair market value of common stock, is recognized on a straight-line basis over the six-month vesting period during which employees perform related services. Under the ESPP 500,000 shares are authorized to be issued. As of June 30, 2020, no shares have been issued under the ESPP.

Note 9 – Fair Value Measurements

The Company measures the fair value of financial assets and liabilities in accordance with ASC Topic 820 – Fair Value Measurements and Disclosures, which defines fair value, establishes a framework for measuring fair value and expands disclosures about fair value measurements. ASC Topic 820 establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value and requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to measurements involving significant unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are as follows:

• Level 1 — inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that are accessible at the measurement date;

• Level 2 — inputs other than quoted prices included in Level 1 that are observable for the asset or liability either directly or indirectly such as quoted prices in active markets for similar assets and liabilities, quoted prices for identical or similar assets or liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of assets or liabilities; and

• Level 3 — unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.

The Company believes that the carrying amounts of its financial instruments, including cash and cash equivalents, trade accounts receivable and accounts payable consist primarily of instruments without extended maturities, which approximate fair value primarily due to their short-term maturities and low risk of counterparty default. We also believe that the carrying value of the 2019 Refinancing Agreement term loan approximates its fair value due to the variable rate on such debt. As of June 30, 2020 and December 31, 2019, the Company determined that the fair value of its 2019 Refinancing Agreement term loan was $41.0 million at each date. Such fair value is determined using discounted estimated future cash flows using level 3 inputs.

In connection with the 2019 Refinancing Agreement, on the Refinancing Closing Date, the Company issued to CB and the other lenders under the CB Warrants to purchase up to a maximum of 263,314 shares of the Company's common stock at an exercise price of $7.63 per share subject to certain adjustments, including for stock dividends, stock splits or reclassifications (refer to Note 7 - Debt). The fair value of the Company’s warrant liability is recorded in the Company’s condensed consolidated financial

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statements and is determined using the Black-Scholes-Merton option pricing model. The valuation inputs include the quoted price of the Company’s common stock in an active market, volatility and expected life of the warrants, which are Level 3 inputs. Volatility is based on the actual market activity of the Company’s stock. The expected life is based on the remaining contractual term of the warrants and the risk-free interest rate is based on the implied yield available on U.S. Treasury Securities with a maturity equivalent to the warrants’ expected life.

The table below sets forth the assumptions used within the Black-Scholes-Merton option pricing model to value the Company's warrant liabilities as of June 30, 2020:

Stock price	$	3.70
Exercise price	$	7.63
Time until expiration (years)	3.79
Expected volatility	70.0		%
Risk-free interest rate	0.3		%
Expected dividend yield	—		%

Note 10 – Earnings per Share

Diluted EPS assumes the dilutive effect of outstanding common stock warrants, UPOs and RSUs, all using the treasury stock method.

	Three months ended June 30,					Six months ended  June 30,
	2020		2019			2020		2019
(in thousands, except per share amounts)			(As Recast)					(As Recast)
EPS numerator:
Net income (loss)	$	2,947	$	(1,289	)	$	2,895	$	559
EPS denominator:
Weighted average shares outstanding – basic	7,846		7,643			7,822		7,643
Impact of dilutive securities	59		—			56		74
Weighted average shares outstanding – diluted	7,905		7,643			7,878		7,717
EPS:
Basic	$	0.38	$	(0.17	)	$	0.37	$	0.07
Diluted	$	0.37	$	(0.17	)	$	0.37	$	0.07

The following table summarizes the securities that were antidilutive or out-of-the-money, and therefore, were not included in the computations of diluted loss per common share:

	Three months ended June 30,		Six months ended June 30,
	2020	2019	2020	2019
Out-of-the money warrants (see Note 8)	4,576,799	4,576,799	4,576,799	4,576,799
Service-based RSUs (See Note 17)	463	138,782	1,255	2,867
Performance and market-based RSUs(1)	9,674	—	—	—
Out-of-the money UPOs (See Note 8)	—	27,360	—	27,360
Total	4,586,936	4,742,941	4,578,054	4,607,026

⁽¹⁾ For the three and six months ended June 30, 2020 and 2019, certain PRSUs and MRSUs (both as defined below) were not included in the computation of diluted loss per share because the performance and market conditions were not satisfied during the periods and would not be satisfied if the reporting date was at the end of the contingency periods.

Note 11 – Income Taxes

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The Company is taxed as a C corporation.

For interim periods, the provision for income taxes (including federal, state, local and foreign taxes) is calculated based on the estimated annual effective tax rate, adjusted for certain discrete items for the full fiscal year. Cumulative adjustments to the Company's estimate are recorded in the interim period in which a change in the estimated annual effective rate is determined. Each quarter we update our estimate of the annual effective tax rate, and if our estimated tax rate changes, we make a cumulative adjustment. The provision (benefit) for income taxes consist of the following:

No valuation allowance was required as of June 30, 2020 or December 31, 2019.

The Company has recorded a liability for unrecognized tax benefits of $0.5 million and $0.4 million as of June 30, 2020 and December 31, 2019, respectively, which were included in accrued expenses and other current liabilities. These unrecognized tax benefits are related to tax positions taken on its various income tax returns in open tax periods.

The effective tax rate for the three and six months ended June 30, 2020 was 27.4% and 14.1%, respectively, and the effective tax rate for the three and six months ended June 30, 2019 was (26.9%) and 31.8%, respectively. The difference in the effective rate for the six months ended June 30, 2020 as compared to the six months ended June 30, 2019 is primarily due to the CARES Act allowing the Company to carryback net operating losses (“NOLs”) generated in 2018 and 2019 (originally valued at a 21% federal tax rate) to prior years and generate a tax refund based on the higher 34% federal tax rate in those prior years.

On March 27, 2020, the CARES Act was signed into law making several changes to the Internal Revenue Code. The CARES Act, among other things, permits NOL carryovers to offset 100% of taxable income for tax years beginning before 2021. In addition, the CARES Act allows NOLs incurred in 2018, 2019 and 2020 to be carried back to each of the five preceding years to generate a $1.6 million refund of previously paid income taxes. The CARES Act contains modification on the limitation of business interest for tax years beginning in 2019 and 2020. The modifications to Section 163(j) increase the allowable business interest deduction from 30% of adjusted taxable income to 50% of adjusted taxable income. The CARES Act also accelerates the refund of AMT credits that were previously accumulated.

Note 12 – Operating Segments

The Company determined its operating segments on the same basis that it assesses performance and makes operating decisions. The Company manages and measures the performance of its business in two distinct operating segments: Construction and Service. These segments are reflective of how the Company’s Chief Operating Decision Maker (“CODM”) reviews operating results for the purposes of allocating resources and assessing performance. The Company's CODM is comprised of its Chief Executive Officer, Chief Financial Officer and Chief Operating Officer.

The accounting policies of the segments are the same as those described in the summary of significant accounting policies. The CODM evaluates performance based on income from operations of the respective segments after the allocation of Corporate office operating expenses. In accordance with ASC Topic 280 – Segment Reporting, the Company has elected to aggregate all of the construction branches into one Construction reportable segment and all of the service branches into one Service reportable segment. All transactions between segments are eliminated in consolidation. Our Corporate department provides general and administrative support services to our two operating segments. The CODM allocates costs between segments for selling, general and administrative expenses and depreciation expense.

All of the Company’s identifiable assets are located in the United States, which is where the Company is domiciled. The Company does not have sales outside the United States. The Company does not identify capital expenditures and total assets by segment in its internal financial reports due in part to the shared use of a centralized fleet of vehicles and specialized equipment. Interest expense is not allocated to segments because of the corporate management of debt service including interest.

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Condensed consolidated segment information for the periods presented is as follows:

	Three months ended June 30,
	2020			2019
(in thousands)				(As Recast)
Statement of Operations Data:
Revenue:
Construction	$	105,937		$	104,759
Service	29,248			27,844
Total revenue	135,185			132,603
Gross profit:
Construction	12,213			10,683
Service	8,122			7,012
Total gross profit	20,335			17,695
Selling, general and administrative expenses:(1)
Construction	8,024			11,229
Service	5,588			5,335
Corporate	140			515
Total selling, general and administrative expenses	13,752			17,079
Amortization of intangibles	274			175
Operating income	$	6,309		$	441
Operating income for reportable segments	$	6,309		$	441
Less unallocated amounts:
Interest expense, net	(2,137		)	(1,597		)
Gain (loss) on sale of property and equipment	(13		)	9
Loss on debt extinguishment	—			(513		)
Gain on change in fair value of warrant liability	(102		)	(103		)
Total unallocated amounts	(2,252		)	(2,204		)
Total consolidated income (loss) before income taxes	$	4,057		$	(1,763	)
Other Data:
Depreciation and amortization:
Construction	$	1,032		$	1,003
Service	330			282
Corporate	274			175
Total other data	$	1,636		$	1,460

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	Six months ended June 30,
	2020			2019
(in thousands)				(As Recast)
Statement of Operations Data:
Revenue:
Construction	$	215,423		$	209,219
Service	58,534			57,131
Total revenue	273,957			266,350
Gross profit:
Construction	23,195			23,599
Service	15,364			13,720
Total gross profit	38,559			37,319
Selling, general and administrative expenses:(1)
Construction	18,200			21,681
Service	11,917			10,561
Corporate	435			882
Total selling, general and administrative expenses	30,552			33,124
Amortization of intangibles	417			350
Operating income	$	7,590		$	3,845
Operating income for reportable segments	$	7,590		$	3,845
Less unallocated amounts:
Interest expense, net	(4,295		)	(2,430		)
Gain on sale of property and equipment	17			21
Loss on debt extinguishment	—			(513		)
Gain on change in fair value of warrant liability	59			(103		)
Total unallocated amounts	(4,219		)	(3,025		)
Total consolidated income (loss) before income taxes	$	3,371		$	820
Other Data:
Depreciation and amortization:
Construction	$	2,062		$	1,976
Service	661			547
Corporate	417			350
Total other data	$	3,140		$	2,873

(1) Starting January 1, 2020, we changed the methodology in which we present our corporate selling, general and administrative expenses to our CODM to better reflect the way the business is managed. Under this new methodology, all corporate expenses except for stock-based compensation are allocated to our Construction and Service segments. For comparability purposes, we reclassified our selling, general and administrative expense segment amounts for the three and six months ended June 30, 2019 to align with this updated allocation methodology.

Note 13 - Leases

The Company leases real estate, trucks and other equipment. The determination of whether an arrangement is, or contains, a lease is performed at the inception of the arrangement. Classification and initial measurement of the right-of-use asset and lease liability are determined at the lease commencement date. The Company elected the short-term lease measurement and recognition

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exemption; therefore, leases with an initial term of 12 months or less are not recorded on the condensed consolidated balance sheets.

The Company's arrangements include certain non-lease components such as common area and other maintenance for leased real estate, as well as mileage, fuel and maintenance costs related to leased vehicles. For all leased asset classes, the Company has elected to not separate non-lease components from lease components and will account for each separate lease component and non-lease component associated with the lease as a single lease component. The Company does not guarantee any residual value in its lease agreements, and there are no material restrictions or covenants imposed by lease arrangements. Real estate leases typically include one or more options to extend the lease. The Company regularly evaluates the renewal options, and when they are reasonably certain of exercise, the Company includes the renewal period in its lease term. For our leased vehicles, the Company uses the interest rate implicit in its leases with the lessor to discount lease payments at the lease commencement date. When the implicit rate is not readily available, as is the case with our real estate leases, the Company uses quoted borrowing rates on our secured debt.

The following table summarizes the lease amounts included in our condensed consolidated balance sheets:

(in thousands)	Classification on the Condensed Consolidated Balance Sheets	June 30, 2020		December 31, 2019
Assets
Operating	Operating lease right-of-use assets (a)	$	19,616	$	21,056
Finance	Property and equipment, net (b)	6,088		6,412
Total lease assets		$	25,704	$	27,468
Liabilities
Current
Operating	Current operating lease liabilities	$	3,681	$	3,750
Finance	Current portion of long-term debt	2,414		2,424
Noncurrent
Operating	Long-term lease liabilities	16,502		18,247
Finance	Long-term debt	3,871		4,161
Total lease liabilities		$	26,468	$	28,582

(a) Operating lease assets are recorded net of accumulated amortization of $9.9 million at June 30, 2020 and $8.5 million at December 31, 2019.

(b) Finance lease assets are recorded net of accumulated amortization of $4.9 million at June 30, 2020 and $4.7 million at December 31, 2019.

The following table summarizes the lease costs included in our condensed consolidated statements of operations for the three months ended:

		For the Three months ended June 30,				For the Six months ended June 30,
(in thousands)	Classification on the Condensed Consolidated Statement of Operations	2020		2019		2020		2019
Operating lease cost	Cost of revenue(a)	$	893	$	853	$	1,777	1,667
Operating lease cost	Selling, general and administrative expenses(a)	376		346		757		671
Finance lease cost
Amortization	Cost of revenue(b)	645		613		1,311		1,183
Interest	Interest expense, net(b)	86		79		179		154
Total lease cost		$	2,000	$	1,891	$	4,024	$	3,675

(a) Operating lease costs recorded in cost of sales includes $0.1 million and $0.2 million of variable lease costs for the three months ended June 30, 2020 and 2019, respectively. In addition, $0.1 million of variable lease costs are included in Selling, general and administrative expenses for both the three months ended June 30, 2020 and 2019. Operating lease costs recorded in cost of sales includes $0.4 million of variable lease costs for the six months ended June 30, 2020 and 2019. In addition, $0.1 million of variable lease costs are included in Selling, general and administrative expenses for the six months ended June 30, 2020 and 2019.

(b) Finance lease costs recorded in cost of revenue for the three months ended June 30, 2020 and 2019 includes $0.5 million and $0.7 million of variable leases costs. Finance lease costs recorded in cost of revenue for the six months ended June 30, 2020 and 2019 includes $1.2 million and $1.4 million of variable lease costs. These variable lease costs consist of fuel, maintenance, and sales tax charges. No variable lease costs for finance leases were recorded in selling, general and administrative expenses.

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Future minimum commitments for finance and operating leases that have non-cancelable lease terms in excess of one year as of June 30, 2020 were as follows:

Year ending (in thousands):	Finance Leases			Operating Leases
Remainder of 2020	$	1,429		$	2,294
2021	2,426			4,565
2022	1,898			4,305
2023	902			3,303
2024	162			2,701
Thereafter	1			6,169
Total minimum lease payments	$	6,818		$	23,337
Amounts representing interest	(533		)
Present value of net minimum lease payments	$	6,285

The following is a summary of the lease terms and discount rates:

	June 30, 2020		December 31, 2019
Weighted average lease term (in years)
Operating	5.93		6.20
Finance	2.83		2.96
Weighted average discount rate
Operating	4.81	%	4.80	%
Finance	5.64	%	5.69	%

The following is a summary of other information and supplemental cash flow information related to finance and operating leases for the six months ended:

(in thousands)	June 30, 2020			June 30, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	2,910		$	2,273
Operating cash flows from finance leases	179			154
Financing cash flows from finance leases	1,285			1,140
Right-of-use assets exchanged for lease liabilities:
Operating leases	$	—		$	3,022
Finance leases	1,050			1,630
Right-of-use assets disposed or adjusted modifying operating leases liabilities	$	586		$	1,651
Right-of-use assets disposed or adjusted modifying finance leases liabilities	$	(64	)	$	—

Note 14 – Self-Insurance

The Company purchases workers’ compensation and general liability insurance under policies with per-incident deductibles of $250 thousand and a $4.6 million maximum aggregate deductible loss limit per year.

The components of the self-insurance liability as of June 30, 2020 and December 31, 2019 are as follows:

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(in thousands)	As of June 30, 2020		As of December 31, 2019
Current liability — workers’ compensation and general liability	$	514	$	703
Current liability — medical and dental	511		821
Non-current liability	452		382
Total liability shown in Accrued expenses and other current liabilities	$	1,477	$	1,906
Restricted cash	$	113	$	113

The restricted cash balance represents an imprest cash balance set aside for the funding of workers' compensation and general liability insurance claims. This amount is replenished either when depleted or at the beginning of each month.

Note 15 – Commitments and Contingencies

Legal. The Company is continually engaged in administrative proceedings, arbitrations, and litigation with owners, general contractors, suppliers, and other unrelated parties, all arising in the ordinary courses of business. In the opinion of the Company’s management, the results of these actions will not have a material adverse effect on the financial position, results of operations, or cash flows of the Company.

LFS and Harper, wholly-owned subsidiaries of the Company, were parties to a lawsuit involving a Harper employee who was alleged to be in the course and scope of his employment at the time the personal car he was operating collided with another car causing injuries to three persons and one fatality. On or about October 12, 2018, the plaintiffs agreed to settle and dismiss the lawsuit in exchange for an aggregate payment of $30.0 million from LFS and Harper, which amounts were paid entirely by the Company’s insurance carriers. The Company will not have any monetary exposure. The $30.0 million amounts due from the Company’s insurance carriers and due to the plaintiffs were included in the captions labeled as other current assets and accrued expenses and other current liabilities, respectively, in the consolidated balance sheet as of December 31, 2018 and were paid in February 2019.

On November 13, 2019, claimant, Lanzo Trenchless Technologies, Inc. - North, filed a Demand for Arbitration in the state of Michigan against our wholly-owned subsidiary, Limbach Company LLC.  The demand seeks damages in excess of $0.4 million based upon the allegation that Limbach breached a construction contract by improperly terminating Lanzo’s subcontract, and for withholding payment from Lanzo based upon deficient performance.  Limbach has asserted a counterclaim seeking damages caused by Lanzo’s deficient performance.  A binding arbitration proceeding is anticipated later in 2020.

On January 23, 2020, plaintiff, Bernards Bros. Inc., filed a complaint against Limbach Holdings, Inc. in Superior Court of the State of California for the County of Los Angeles against Limbach Holdings, Inc.  The complaint alleges that our Southern California operations refused to honor a proposal made to Bernards to act as a subcontractor on a construction project, and that, as a result of the wrongful failure to honor the proposal, Bernards suffered damages in excess of $3.0 million, including alleged increased costs for hiring a different subcontractor to perform the work.  The Company intends to vigorously defend the suit.  The schedule of these proceedings has been delayed due to COVID-19 related court-closings, such that a date for trial is currently uncertain.

On April 17, 2020, plaintiff, LA Excavating, Inc., filed a complaint against our wholly-owned subsidiary, Limbach Company LP, and several other parties, in Superior Court of the State of California, for the County of Los Angeles. The complaint seeks damages of approximately $1.0 million for alleged failure to pay contract balances and extra work ordered by Limbach, as well as seeks to enforce payment obligations under payment and stop notice release bonds. The Company disputes the allegations and intends to vigorously defend the suit. The schedule of these proceedings has been delayed due to COVID-19 related court-closings, such that a date for trial is currently uncertain.

Surety. The terms of our construction contracts frequently require that we obtain from surety companies, and provide to our customers, payment and performance bonds (“Surety Bonds”) as a condition to the award of such contracts. The Surety Bonds secure our payment and performance obligations under such contracts, and we have agreed to indemnify the surety companies for amounts, if any, paid by them in respect of Surety Bonds issued on our behalf. In addition, at the request of labor unions representing certain of our employees, Surety Bonds are sometimes provided to secure obligations for wages and benefits payable to or for such employees. Public sector contracts require Surety Bonds more frequently than private sector contracts, and accordingly, our bonding requirements typically increase as the amount of public sector work increases. As of June 30, 2020, the Company had approximately $128.6 million in surety bonds outstanding. The Surety Bonds are issued by surety companies in return for premiums, which vary depending on the size and type of bond.

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Collective Bargaining Agreements. Many of the Company’s craft labor employees are covered by collective bargaining agreements. The agreements require the Company to pay specified wages, provide certain benefits and contribute certain amounts to multi-employer pension plans. If the Company withdraws from any of the multi-employer pension plans or if the plans were to otherwise become underfunded, the Company could incur additional liabilities related to these plans. Although the Company has been informed that some of the multi-employer pension plans to which it contributes have been classified as “critical” status, the Company is not currently aware of any significant liabilities related to this issue.

Note 16 – Remaining Performance Obligations

Remaining performance obligations represent the transaction price of firm orders for which work has not been performed and exclude unexercised contract options. The Company’s remaining performance obligations includes projects that have a written award, a letter of intent, a notice to proceed or an agreed upon work order to perform work on mutually accepted terms and conditions.

As of June 30, 2020, the aggregate amount of the transaction prices allocated to the remaining performance obligations of the Company's Construction and Service segment contracts were $408.8 million and $46.6 million, respectively. As of December 31, 2019, the aggregate amount of the transaction prices allocated to the remaining performance obligations of the Company's Construction and Service segment contracts were $504.2 million and $41.9 million, respectively.

We estimate that 56% and 100% of our Construction and Service segment remaining performance obligations as of June 30, 2020, respectively, will be recognized as revenue during 2020, with the substantial majority of remaining performance obligations to be recognized within 24 months, although the timing of the Company's performance is not always under its control.

Additionally, the difference between remaining performance obligations and backlog is due to the exclusion of a portion of the Company’s service agreements under certain contract types from the Company’s remaining performance obligations as these contracts can be canceled for convenience at any time by the Company or the customer without considerable cost incurred by the customer. Additional information related to backlog is provided in “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations” of this Quarterly Report on Form 10-Q.

Note 17 – Management Incentive Plans

The Company initially adopted the Omnibus Incentive Plan on July 20, 2016 for the purpose of: (a) encouraging the profitability and growth of the Company through short-term and long-term incentives that are consistent with the Company’s objectives; (b) giving participants an incentive for excellence in individual performance; (c) promoting teamwork among participants; and (d) giving the Company a significant advantage in attracting and retaining key employees, directors and consultants. To accomplish such purposes, the Omnibus Incentive Plan provides that the Company may grant options, stock appreciation rights, restricted shares, restricted stock units, performance-based awards (including performance-based restricted shares and restricted stock units), other share based awards, other cash-based awards or any combination of the foregoing.

Following the further amendment and restatement of the Omnibus Incentive Plan upon approval of the Company's stockholders on July 14, 2020, the Company has reserved a total of 1,650,000 shares of its common stock for issuance under the Omnibus Incentive Plan. The number of shares issued or reserved pursuant to the Omnibus Incentive Plan will be adjusted by the plan administrator, as they deem appropriate and equitable, as a result of stock splits, stock dividends, and similar changes in the Company’s common stock. In connection with the grant of an award, the plan administrator may provide for the treatment of such award in the event of a change in control. All awards are made in the form of shares only. See Note 18 - Subsequent Events.

Service-Based Awards

During the first six months of 2020, the Company granted 118,633 service-based RSUs to its executives, certain employees, and non-employee directors under the Omnibus Incentive Plan.

The following table summarizes our service-based RSU activity for the six months ended June 30, 2020:

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	Awards		Weighted-Average Grant Date Fair Value
Unvested at December 31, 2019	328,575		$	7.83
Granted	118,633		3.48
Vested	(167,085	)	8.95
Forfeited	(10,109	)	6.80
Unvested at June 30, 2020	270,014		$	5.34

Performance-Based Awards

During the first six months of 2020, the Company granted 96,500 performance-based RSUs (“PRSUs”) to its executives and certain employees under the Omnibus Incentive Plan. The Company will recognize stock-based compensation expense for these awards over the vesting period based on the projected probability of achievement of certain performance conditions as of the end of each reporting period during the performance period and may periodically adjust the recognition of such expense, as necessary, in response to any changes in the Company’s forecasts with respect to the performance conditions. For the three and six months ended June 30, 2020, the Company recognized $0.1 million of stock-based compensation expense related to outstanding PRSUs. For the three and six months ended June 30, 2019, the Company did not recognize any stock-based compensation expense related to any outstanding PRSUs.

The following table summarizes our PRSU activity for the six months ended June 30, 2020:

	Awards		Weighted-Average Grant Date Fair Value
Unvested at December 31, 2019	62,307		$	12.62
Granted	96,500		3.67
Vested	—		—
Forfeited	(13,250	)	11.31
Unvested at June 30, 2020	145,557		$	6.80

Market-Based Awards

The following table summarizes our market-based RSU (“MRSUs”) activity for the six months ended June 30, 2020:

	Awards		Weighted-Average Grant Date Fair Value
Unvested at December 31, 2019	125,000		$	6.58
Granted	—		—
Vested	—		—
Forfeited	(22,500	)	6.58
Unvested at June 30, 2020	102,500		$	6.58

Total recognized stock-based compensation expense amounted to $0.1 million and $0.4 million for the three and six months ended June 30, 2020, respectively, and $0.5 million and $0.9 million for the three and six months ended June 30, 2019, respectively. The aggregate fair value as of the vest date of RSUs that vested during the six months ended June 30, 2020 and 2019 was $0.6 million and $0.2 million, respectively. Total unrecognized stock-based compensation expense related to unvested RSUs which are probable of vesting was $0.6 million at June 30, 2020. These costs are expected to be recognized over a weighted average period of 1.28 years.

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Upon approval of the Company's stockholders on May 30, 2019, the Company adopted the Limbach Holdings, Inc. 2019 Employee Stock Purchase Plan (“the ESPP”). On January 1, 2020, the ESPP went into effect. The ESPP enables eligible employees, as defined by the ESPP, the right to purchase the Company's common stock through payroll deductions during consecutive subscription periods at a purchase price of 85% of the fair market value of a common share at the end of each offering period. Annual purchases by participants are limited to the number of whole shares that can be purchased by an amount equal to ten percent of the participant's compensation or $5,000, whichever is less. Each offering period of the ESPP lasts six months, commencing on January 1st and July 1st of each year.  The amounts collected from participants during a subscription period are used on the exercise date to purchase full shares of common stock.  Participants may withdraw from an offering before the exercise date and obtain a refund of amounts withheld through payroll deductions. Compensation cost, representing the 15% discount applied to the fair market value of common stock, is recognized on a straight-line basis over the six-month vesting period during which employees perform related services. Under the ESPP 500,000 shares are authorized to be issued. As of June 30, 2020, no shares have been issued under the ESPP. See Note 18 - Subsequent Events.

Note 18 – Subsequent Events

At the 2020 Annual Meeting, held on July 14, 2020, the stockholders approved the further amendments to the Company's amended and restated Omnibus Incentive Plan to increase the number of shares of the Company's common stock that may be issued pursuant to awards by 500,000, for a total of 1,650,000 shares, and extend the term of the plan so that it will expire on the tenth anniversary of the date the stockholders approve the Amended Incentive Plan.

In July 2020, we issued 30,825 shares of our common stock to participants in the ESPP who contributed to the plan through June 30, 2020. Stock compensation expense related to the ESPP was $17 thousand for the three and six months ended June 30, 2020.

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

The following discussion should be read in conjunction with the condensed consolidated financial statements and related notes thereto included elsewhere in this Quarterly Report on Form 10-Q. In addition to historical information, this discussion contains forward-looking statements that involve risks, uncertainties and assumptions that could cause actual results to differ materially from our management’s expectations. Factors that could cause such differences are discussed in “Forward-Looking Statements” and “Risk Factors” in our Annual Report on Form 10-K for the fiscal year ended December 31, 2019 and in subsequent Quarterly Reports on Form 10-Q. We assume no obligation to update any of these forward-looking statements.

Overview

We are an industry-leading commercial specialty contractor in the areas of heating, ventilation, and air conditioning (“HVAC”), plumbing, electrical and building controls through design and construction of new and renovated buildings, maintenance services, energy retrofits and equipment upgrades for private customers and federal, state, and local public agencies in Florida, California, Massachusetts, New Jersey, Pennsylvania, Delaware, Maryland, Washington, D.C., Virginia, West Virginia, Ohio and Michigan. We operate our business in two segments, (i) Construction, in which we generally manage large construction or renovation projects that involve primarily HVAC, plumbing or electrical services, and (ii) Service, in which we provide facility maintenance or services primarily on HVAC, plumbing or electrical systems. Our branches and corporate headquarters are located in the United States.

JOBS Act

We ceased to qualify as an “emerging growth company” pursuant to the Jumpstart Our Business Startups Act on December 31, 2019, at which time we reached the last day of the fiscal year following the fifth anniversary of our initial public offering of common equity securities.

Key Components of Condensed Consolidated Statements of Operations

Revenue

We generate revenue principally from fixed-price construction contracts to deliver HVAC, plumbing, and electrical construction services to our customers. The duration of our contracts generally ranges from six months to two years. Revenue from fixed price contracts is recognized on the cost-to-cost method, measured by the relationship of total cost incurred to total estimated contract costs. Revenue from time and materials contracts is recognized as services are performed. We believe that our extensive experience in HVAC, plumbing, and electrical projects, and our internal cost review procedures during the bidding process, enable us to reasonably estimate costs and mitigate the risk of cost overruns on fixed price contracts.

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We generally invoice customers on a monthly basis, based on a schedule of values that breaks down the contract amount into discrete billing items. Costs and estimated earnings in excess of billings on uncompleted contracts are recorded as a contract asset until billable under the contract terms. Billings in excess of costs and estimated earnings on uncompleted contracts are recorded as a contract liability until the related revenue is recognizable.

Cost of Revenue

Cost of revenue primarily consists of the labor, equipment, material, subcontract, and other job costs in connection with fulfilling the terms of our contracts. Labor costs consist of wages plus taxes, fringe benefits, and insurance. Equipment costs consist of the ownership and operating costs of company-owned assets, in addition to outside-rented equipment. If applicable, job costs include estimated contract losses to be incurred in future periods. Due to the varied nature of our services, and the risks associated therewith, contract costs as a percentage of contract revenue have historically fluctuated and we expect this fluctuation to continue in future periods.

Selling, General and Administrative Expenses

Selling, general and administrative expenses consist primarily of personnel costs for our administrative, estimating, human resources, safety, information technology, legal, finance and accounting employees and executives. Also included are non-personnel costs, such as travel-related expenses, legal and other professional fees and other corporate expenses to support the growth of our business and to meet the compliance requirements associated with operating as a public company. Those costs include accounting, human resources, information technology, legal personnel, additional consulting, legal and audit fees, insurance costs, board of directors’ compensation and the costs of achieving and maintaining compliance with Section 404 of the Sarbanes-Oxley Act.

Starting January 1, 2020, we changed the methodology in which we present our corporate selling, general and administrative expenses to our CODM (as defined below) to better reflect the way the business is managed. Under this new methodology, all corporate expenses except for stock-based compensation are allocated to our Construction and Service segments. For comparability purposes, we reclassified our selling, general and administrative expense segment amounts for the three and six months ended June 30, 2019 to align with this updated allocation methodology.

Amortization of Intangibles

Amortization expense represents periodic non-cash charges that consist of amortization of various intangible assets, primarily including leasehold interests, customer relationships - Service and backlog - Construction.

Other Income/Expense

Other income/expense, net consists primarily of interest expense incurred in connection with our debt, net of interest income and gains and losses on the sale of property and equipment and change in fair value of warrant liability. Deferred financing costs are amortized to interest expense using the effective interest method.

Income Taxes

We are taxed as a C corporation and our financial results include the effects of federal income taxes which are paid at the parent level.

For interim periods, the provision for income taxes (including federal, state and local taxes) is calculated based on the estimated annual effective tax rate. The Company accounts for income taxes in accordance with ASC Topic 740 - Income Taxes, which requires the use of the asset and liability method. Under this method, deferred tax assets and liabilities and income or expense are recognized for the expected future tax consequences of temporary differences between the financial statement carrying values and their respective tax bases, using enacted tax rates expected to be applicable in the years in which the temporary differences are expected to reverse. Changes in deferred tax assets and liabilities are recorded in the provision for income taxes.

Operating Segments

We manage and measure the performance of our business in two operating segments: Construction and Service. These segments are reflective of how the Company’s Chief Operating Decision Makers (“CODM”) reviews its operating results for the purposes of allocating resources and assessing performance. Our CODM is comprised of our Chief Executive Officer, Chief Financial Officer and Chief Operating Officer. The CODM evaluates performance and allocates resources based on operating income, which is profit or loss from operations before “other” corporate expenses, income tax provision (benefit), if any.

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The accounting policies of the segments are the same as those described in the summary of significant accounting policies. The CODM evaluates performance based on income from operations of the respective branches after the allocation of corporate office operating expenses. In accordance with ASC Topic 280 – Segment Reporting, the Company has elected to aggregate all of the construction branches into one Construction reportable segment and all of the service branches into one Service reportable segment. All transactions between segments are eliminated in consolidation. Our corporate department provides general and administrative support services to our two operating segments. We allocate costs between segments for selling, general and administrative expenses and depreciation expense. See Note 12 – Operating Segments in the notes to condensed consolidated financial statements.

We do not identify capital expenditures and total assets by segment in our internal financial reports due in part to the shared use of a centralized fleet of vehicles and specialized equipment. Interest expense is not allocated to segments because of the corporate management of debt service.

Comparison of Results of Operations for the three months ended June 30, 2020 and June 30, 2019

The following table presents operating results for the three months ended June 30, 2020 and June 30, 2019 in dollars and expressed as a percentage of total revenue (except as indicated below), as compared below:

	Three months ended June 30,
	2020						2019
							(As Recast)
(in thousands except for percentages)	($)			(%)			($)			(%)
Statement of Operations Data:
Revenue:
Construction	$	105,937		78.4	%		$	104,759		79.0	%
Service	29,248			21.6	%		27,844			21.0	%
Total revenue	135,185			100.0	%		132,603			100.0	%
Gross profit:
Construction	12,213			11.5	%	(1)	10,683			10.2	%	(1)
Service	8,122			27.8	%	(2)	7,012			25.2	%	(2)
Total gross profit	20,335			15.0	%		17,695			13.3	%
Selling, general and administrative:(3)
Construction	8,024			7.6	%	(1)	11,229			10.7	%	(1)
Service	5,588			19.1	%	(2)	5,335			19.2	%	(2)
Corporate	140			0.1	%		515			0.4	%
Total selling, general and administrative expenses	13,752			10.2	%		17,079			12.9	%
Amortization of intangibles (Corporate)	274			0.2	%		175			0.1	%
Operating income (loss):
Construction	4,189			4.0	%	(1)	(546		)	(0.5	)%	(1)
Service	2,534			8.7	%	(2)	1,677			6.0	%	(2)
Corporate	(414		)	—	%		(690		)	—	%
Total operating income	6,309			4.7	%		441			0.3	%
Other expenses (Corporate)	(2,252		)	(1.7	)%		(2,204		)	(1.7	)%
Total consolidated income (loss) before income taxes	4,057			3.0	%		(1,763		)	(1.3	)%
Income tax provision (benefit)	1,110			0.8	%		(474		)	(0.4	)%
Net income (loss)	$	2,947		2.2	%		$	(1,289	)	(1.0	)%

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(1) As a percentage of Construction revenue.

(2) As a percentage of Service revenue.

(3) Starting January 1, 2020, we changed the methodology in which we present our corporate selling, general and administrative expenses to our CODM to better reflect the way the business is managed. Under this new methodology, all corporate expenses except for stock-based compensation are allocated to our Construction and Service segments. For comparability purposes, we reclassified our selling, general and administrative expense segment amounts for the three months ended June 30, 2019 to align with this updated allocation methodology.

Revenue

	Three months ended June 30,
	2020	2019	Increase/(Decrease)
		(As Recast)
(in thousands except for percentages)	$	$	$	%
Revenue:
Construction	105,937	104,759	1,178	1.1	%
Service	29,248	27,844	1,404	5.0	%
Total revenue	135,185	132,603	2,582	1.9	%

Revenue for the three months ended June 30, 2020 increased by $2.6 million compared to the revenue for the three months ended June 30, 2019, as recast for the adoption of ASC Topic 606. Construction revenue increased by $1.2 million, or 1.1% while Service revenue increased by $1.4 million, or 5.0%. The increase in Construction revenue was primarily driven by revenue increases at the Michigan, Southern California and Ohio regions. These increases were partially offset by revenue decreases in the Florida and New England regions largely due to project shutdowns due to COVID-19 and Western and Eastern Pennsylvania regions due to the substantial completion of projects in the second quarter of 2020 compared to the same prior year quarter. Florida and Mid-Atlantic regions' Service revenue increased quarter over quarter nearly offset by declines in Service revenue in Michigan, Eastern Pennsylvania and New England. Maintenance contract revenue, a component of Service revenue, remained relatively flat at $3.7 million for both the three months ended June 30, 2020 and June 30, 2019.

Gross Profit

	Three months ended June 30,
	2020		2019		Increase/(Decrease)
			(As Recast)
(in thousands except for percentages)	$		$		$	%
Gross Profit:
Construction	12,213		10,683		1,530	14.3	%
Service	8,122		7,012		1,110	15.8	%
Total gross profit	20,335		17,695		2,640	14.9	%
Total gross profit as a percentage of consolidated total revenue	15.0	%	13.3	%

Our gross profit for the three months ended June 30, 2020 increased by $2.6 million compared to our gross profit for the three months ended June 30, 2019. Construction gross profit increased $1.5 million or 14.3%. Service gross profit increased $1.1 million, or 15.8% due to more favorable project pricing. The total gross profit percentage increased from 13.3% for the three months ended June 30, 2019 to 15.0% for the same period ended in 2020, mainly driven by the mix of higher margin Service to Construction projects and more favorable pricing of those projects year over year.

We recorded revisions in our contract estimates for certain construction projects. For projects having revisions with a material gross profit impact, this resulted in gross profit write downs on four construction projects of $1.5 million for the three months ended June 30, 2020, two of which were within the Southern California region for a total of $0.7 million. No material project revisions resulting in gross profit write ups were recorded for the three months ended June 30, 2020.

For the three months ended June 30, 2019, we recorded revisions in our contract estimates for certain construction and service projects. For individual projects with revisions having a material gross profit impact, this resulted in gross profit write ups totaling

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$0.3 million on one construction project and $0.3 million on one service project. We also recorded revisions in contract estimates that resulted in project write downs totaling $1.9 million on three construction projects for our Southern California region.

Selling, General and Administrative Expenses

	Three months ended June 30,
	2020		2019		Increase/(Decrease)
			(As Recast)
(in thousands except for percentages)	$		$		$		%
Selling, general and administrative expenses:
Construction	8,024		11,229		(3,205	)	(28.5	)%
Service	5,588		5,335		253		4.7	%
Corporate	140		515		(375	)	(72.8	)%
Total selling, general and administrative expenses	13,752		17,079		(3,327	)	(19.5	)%
Selling, general and administrative expenses as a percentage of consolidated total revenue	10.2	%	12.9	%

Our total selling, general and administrative (“SG&A”) expenses decreased by approximately $3.3 million to $13.8 million for the three months ended June 30, 2020 compared to $17.1 million for the three months ended June 30, 2019. Total SG&A expense decreased during the current quarter by $3.3 million primarily related to $0.7 million in net headcount reductions throughout the Company, $0.8 million related to company-wide reduction in travel and entertainment expenses, a $0.2 million reduction in professional service fees and a $0.4 million reduction on pre-sale engineering expenses. Corporate SG&A decreased to $0.1 million for the three months ended June 30, 2020 from $0.5 million for the three months ended June 30, 2019 due to lower expense related to stock-based compensation awards. Additionally, total SG&A as a percentage of revenues were 10.2% for the three months ended June 30, 2020 and 12.9% for the three months ended June 30, 2019.

Amortization of Intangibles

	Three months ended June 30,
	2020	2019	Increase/(Decrease)
(in thousands except for percentages)	$	$	$	%
Amortization of intangibles (Corporate)	274	175	99	56.6	%

Total amortization expense for the amortizable intangible assets was $0.3 million for the three months ended June 30, 2020 and $0.2 million for the three months ended June 30, 2019. This increase was attributable to $0.1 million of accelerated amortization of our favorable leasehold interests intangible asset in conjunction with the Western Pennsylvania office relocation during the three months ended June 30, 2020.

Other Expenses

	Three months ended June 30,
	2020		2019		Increase/(Decrease)
(in thousands except for percentages)	$		$		$		%
Other income (expenses):
Interest expense, net	(2,137	)	(1,597	)	(540	)	33.8	%
Gain on disposition of property and equipment	(13	)	9		(22	)	(244.4	)%
Loss on debt extinguishment	—		(513	)	513		(100.0	)%
Gain (loss) on fair value of warrant liability	(102	)	(103	)	1		(1.0	)%
Total other expenses	(2,252	)	(2,204	)	(48	)	2.2	%

Other expenses, consisting primarily of interest expense, were $2.3 million for the three months ended June 30, 2020 and $2.2 million for the three months ended June 30, 2019. The increase in interest expense was primarily due to the Company's higher interest rates on the refinanced debt obligations at 13.0% in the second quarter of 2020 compared to 10.5% in the second quarter

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of 2019, including debt issuance and discount amortization, associated with the 2019 Refinancing Agreement that occurred on April 12, 2019. Accordingly, a loss on debt extinguishment of $0.5 million was recognized on that same date. The Company also recorded other income of $0.1 million to reflect the change in fair value of the CB Warrants liability for both the three months ended June 30, 2020 and June 30, 2019.

Income Taxes

For the three months ended June 30, 2020, the Company recorded a $1.0 million current tax provision and a $0.2 million deferred income tax benefit for the three months ended June 30, 2020. For the three months ended June 30, 2019, the Company recorded a $0.1 million current federal tax benefit. In addition, the Company recorded a $0.5 million deferred federal income tax benefit for the three months ended June 30, 2019.

The effective tax rate for the three months ended June 30, 2020 was 27.4% and the effective tax rate for the three months ended June 30, 2019 was (26.9%). The difference in the effective rate for the three months ended June 30, 2020 as compared to 2019 is primarily due to the CARES Act allowing the Company to carryback net operating losses generated in 2018 and 2019 (originally valued at a 21% federal tax rate) to prior tax years and generate a tax refund based on the higher 34% federal tax rate in those prior years. The refund generated by this carryback has been netted against income taxes payable and has been included in income tax receivable as $0.7 million in the condensed consolidated balance sheet at June 30, 2020.

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Comparison of Results of Operations for the six months ended June 30, 2020 and June 30, 2019

The following table presents operating results for the six months ended June 30, 2020 and June 30, 2019 in dollars and expressed as a percentage of total revenue (except as indicated below), as compared below:

	Six months ended June 30,
	2020						2019
							(As Recast)
(in thousands except for percentages)	($)			(%)			($)			(%)
Statement of Operations Data:
Revenue:
Construction	$	215,423		78.6	%		$	209,219		78.6	%
Service	58,534			21.4	%		57,131			21.4	%
Total revenue	273,957			100.0	%		266,350			100.0	%
Gross profit:
Construction	23,195			10.8	%	(1)	23,599			11.3	%	(1)
Service	15,364			26.2	%	(2)	13,720			24.0	%	(2)
Total gross profit	38,559			14.1	%		37,319			14.0	%
Selling, general and administrative:(3)
Construction	18,200			8.4	%	(1)	21,681			10.4	%	(1)
Service	11,917			20.4	%	(2)	10,561			18.5	%	(2)
Corporate	435			0.2	%		882			0.3	%
Total selling, general and administrative expenses	30,552			11.2	%		33,124			12.4	%
Amortization of intangibles (Corporate)	417			0.2	%		350			0.1	%
Operating income (loss):
Construction	4,995			2.3	%	(1)	1,918			0.9	%	(1)
Service	3,447			5.9	%	(2)	3,159			5.5	%	(2)
Corporate	(852		)	—	%		(1,232		)	—	%
Total operating income	7,590			2.8	%		3,845			1.4	%
Other expenses (Corporate)	(4,219		)	(1.5	)%		(3,025		)	(1.1	)%
Total consolidated income (loss) before income taxes	3,371			1.2	%		820			0.3	%
Income tax provision (benefit)	476			0.2	%		261			0.1	%
Net income (loss)	$	2,895		1.1	%		$	559		0.2	%

(1) As a percentage of Construction revenue.

(2) As a percentage of Service revenue.

(3) Starting January 1, 2020, we changed the methodology in which we present our corporate selling, general and administrative expenses to our CODM to better reflect the way the business is managed. Under this new methodology, all corporate expenses except for stock-based compensation are allocated to our Construction and Service segments. For comparability purposes, we reclassified our selling, general and administrative expense segment amounts for the six months ended June 30, 2019 to align with this updated allocation methodology.

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Revenue

	Six months ended June 30,
	2020	2019	Increase/(Decrease)
		(As Recast)
(in thousands except for percentages)	$	$	$	%
Revenue:
Construction	215,423	209,219	6,204	3.0	%
Service	58,534	57,131	1,403	2.5	%
Total revenue	273,957	266,350	7,607	2.9	%

Revenue for the six months ended June 30, 2020 increased by $7.6 million compared to the revenue for the six months ended June 30, 2019, as recast for the adoption of ASC Topic 606. Construction revenue increased by $6.2 million, or 3.0%. The increase in Construction revenue was primarily driven by revenue increases at the Michigan and Southern California regions. These increases were partially offset by revenue decreases in all other regions, particularly, the Florida and New England regions due to project shutdowns due to COVID-19 and Western and Eastern Pennsylvania regions due to the substantial completion of projects in the first half of the year of 2020 compared to the same period in the prior year. Ohio, Florida and Mid-Atlantic regions' Service revenue increased year over year offset by declines in Service revenue in all other regions, resulting in a net Service revenue of $1.4 million. Maintenance contract revenue, a component of Service revenue, was $7.5 million for the six months ended June 30, 2020 and $7.4 million for the six months ended June 30, 2019, remaining relatively flat year over year.

Gross Profit

	Six months ended June 30,
	2020		2019		Increase/(Decrease)
			(As Recast)
(in thousands except for percentages)	$		$		$		%
Gross Profit:
Construction	23,195		23,599		(404	)	(1.7	)%
Service	15,364		13,720		1,644		12.0	%
Total gross profit	38,559		37,319		1,240		3.3	%
Total gross profit as a percentage of consolidated total revenue	14.1	%	14.0	%

Our gross profit for the six months ended June 30, 2020 increased by $1.2 million compared to our gross profit for the six months ended June 30, 2019. Construction gross profit decreased $0.4 million or (1.7)% due to the project write downs referenced in the succeeding paragraph. Service gross profit increased $1.6 million, or 12.0% due to more favorable project pricing. The total gross profit percentage was 14.0% for the six months ended June 30, 2019 as compared to 14.1% for the same period ended in 2020, remaining relatively flat.

For the six months ended June 30, 2020, we recorded revisions in our contract estimates for certain construction projects. We recorded gross profit write downs on eight construction projects and two gross profit write ups on construction projects for the six months ended June 30, 2020, each of which had a material gross profit impact, for an aggregate revision of $5.2 million and $1.2 million, respectively.

For the six months ended June 30, 2019, we recorded revisions in our contract estimates for certain construction and service projects. For individual projects with revisions having a material gross profit impact, this resulted in gross profit write ups totaling $3.0 million on six projects, including three projects totaling $1.0 million for our Mid-Atlantic region. One of these project write ups in the amount of $1.4 million resulted from our settlement of a significant Michigan project. We also recorded revisions in contract estimates that resulted in project write downs totaling $3.5 million on seven projects, including four projects totaling $2.2 million in our Southern California region and one project for $0.5 million in our Mid-Atlantic region. Revisions in our contract estimates on one service project resulted in a gross profit write up of $0.3 million on a Mid-Atlantic project and one Southern California project resulted in a gross profit write down of $0.3 million for the first six months of 2019.

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Selling, General and Administrative Expenses

	Six months ended June 30,
	2020		2019		Increase/(Decrease)
			(As Recast)
(in thousands except for percentages)	$		$		$		%
Selling, general and administrative expenses:
Construction	18,200		21,681		(3,481	)	(16.1	)%
Service	11,917		10,561		1,356		12.8	%
Corporate	435		882		(447	)	(50.7	)%
Total selling, general and administrative expenses	30,552		33,124		(2,572	)	(7.8	)%
Selling, general and administrative expenses as a percentage of consolidated total revenue	11.2	%	12.4	%

Our total SG&A expenses decreased by approximately $2.6 million to $30.6 million for the six months ended June 30, 2020 compared to $33.1 million for the six months ended June 30, 2019. Total SG&A expense decreased during the first half of the year by $2.6 million primarily related to reductions of $1.1 million in company-wide travel and entertainment expenses, $0.4 million in pre-sales engineering expenses, $0.2 million for medical and workers' compensation expense, $0.1 million in rent-related expense and a $0.5 million decrease in professional fees offset by a $1.0 million increase in payroll related expenses due to the timing of headcount for the first half of the year as compared to prior year. Corporate SG&A decreased to $0.4 million for the six months ended June 30, 2020 from $0.9 million for the six months ended June 30, 2019 due to lower expense related to stock-based compensation awards. Additionally, total SG&A as a percentage of revenues were 11.2% for the six months ended June 30, 2020 and 12.4% for the six months ended June 30, 2019.

Amortization of Intangibles

	Six months ended June 30,
	2020	2019	Increase/(Decrease)
(in thousands except for percentages)	$	$	$	%
Amortization of intangibles (Corporate)	417	350	67	19.1	%

Total amortization expense for the amortizable intangible assets was $0.4 million for the six months ended June 30, 2020 and $0.4 million for the six months ended June 30, 2019. This increase was attributable to a $0.1 million accelerated amortization of our favorable leasehold interests intangible asset in conjunction with the Western Pennsylvania office relocation offset by lower amortization of the Customer Relationships - Service intangible asset for the six months ended June 30, 2020 than for the six months ended June 30, 2019.

Other Expenses

	Six months ended June 30,
	2020		2019		Increase/(Decrease)
(in thousands except for percentages)	$		$		$		%
Other income (expenses):
Interest expense, net	(4,295	)	(2,430	)	(1,865	)	76.7	%
Gain on disposition of property and equipment	17		21		(4	)	(19.0	)%
Loss on debt extinguishment	—		(513	)	513		(100.0	)%
Gain (loss) on fair value of warrant liability	59		(103	)	162		(157.3	)%
Total other expenses	(4,219	)	(3,025	)	(1,194	)	39.5	%

Other expenses, consisting primarily of interest expense, were $4.2 million for the six months ended June 30, 2020 and $3.0 million for the six months ended June 30, 2019. The increase in interest expense was primarily due to the Company's higher interest rates on the refinanced debt obligations, including debt issuance and discount amortization, associated with the 2019 Refinancing Agreement that occurred on April 12, 2019. The Company also recorded other income of $0.5 million for a loss on debt

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extinguishment also related to the refinancing and $0.1 million to reflect the change in fair value of the CB Warrants liability for the six months ended June 30, 2019.

Income Taxes

The Company recorded a $0.2 million current federal tax benefit and a $0.1 million current state and local income tax benefit for the six months ended June 30, 2020. In addition, the Company recorded a $0.7 million deferred federal income tax provision and a $0.1 million deferred state and local income tax provision for the six months ended June 30, 2020.

For the six months ended June 30, 2019, the Company recorded a $0.1 million current federal and state and local current tax provision. In addition, the Company recorded a $0.6 million deferred federal income tax provision and a $0.1 million deferred state and local income tax provision for the six months ended June 30, 2019.

The effective tax benefit rate for the six months ended June 30, 2020 was 14.1% and the effective tax provision rate for the six months ended June 30, 2019 was 31.8%. The difference in the effective rate for the six months ended June 30, 2020 as compared to 2019 is primarily due to the CARES Act allowing the Company to carryback net operating losses generated in 2018 and 2019 (originally valued at a 21% federal tax rate) to prior tax years and generate a tax refund based on the higher 34% federal tax rate in those prior years. The total refund generated by this carryback was $1.6 million and has been included in income tax receivable in the condensed consolidated balance sheet at June 30, 2020.

Construction and Service Backlog Information

We refer to our estimated revenue on uncompleted contracts, including the amount of revenue on contracts for which work has not begun, less the revenue we have recognized under such contracts, as “backlog.” Backlog includes unexercised contract options. Our backlog includes projects that have a written award, a letter of intent, a notice to proceed or an agreed upon work order to perform work on mutually accepted terms and conditions. Additionally, the difference between our backlog and remaining performance obligations is due to the portion of unexercised contract options that are excluded, under certain contract types, from our remaining performance obligations as these contracts can be canceled for convenience at any time by us or the customer without considerable cost incurred by the customer. Additional information related to our remaining performance obligations is provided in Note 16 — Remaining Performance Obligations in the accompanying notes to our consolidated financial statements.

Given the multi-year duration of many of our contracts, revenue from backlog is expected to be earned over a period that will extend beyond one year. Many of our contracts contain provisions that allow the contract to be canceled at any time; however, if this occurs, we can generally recover costs incurred up to the date of cancellation.

Construction backlog as of June 30, 2020 was $408.8 million compared to $504.2 million at December 31, 2019. In addition, Service backlog as of June 30, 2020 was $61.8 million compared to $57.0 million at December 31, 2019 as a result of incremental Service sales generated from the Company’s investment in Service sales staff over the past few years. Of the total backlog at June 30, 2020, we expect to recognize approximately $275.9 million by the end of 2020.

Seasonality, Cyclicality and Quarterly Trends

Severe weather can impact our operations. In the northern climates where we operate, and to a lesser extent the southern climates as well, severe winters can slow our productivity on construction projects, which shifts revenue and gross profit recognition to a later period. Our maintenance operations may also be impacted by mild or severe weather. Mild weather tends to reduce demand for our maintenance services, whereas severe weather may increase the demand for our maintenance and spot services. Our operations also experience mild cyclicality, as building owners typically work through maintenance and capital projects at an increased level during the third and fourth calendar quarters of each year.

Effect of Inflation and Tariffs

The prices of products such as steel, pipe, copper and equipment from manufacturers are subject to fluctuation and the imposition of or increases in tariffs. While it is difficult to accurately measure the impact of inflation and tariffs due to the imprecise nature of the estimates required, we believe these effects of inflation, if any, on our results of operations and financial condition have been immaterial. When appropriate, we include cost escalation factors into our bids and proposals. In addition, we are often able to mitigate the impact of future price increases by entering into fixed price purchase orders for materials and equipment and subcontracts on our projects.

Liquidity and Capital Resources

Cash Flows

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Our liquidity needs relate primarily to the provision of working capital (defined as current assets less current liabilities) to support operations, funding of capital expenditures, and investment in strategic opportunities. Historically, liquidity has been provided by operating activities and borrowings from commercial banks and institutional lenders.

The following table presents summary cash flow information for the periods indicated:

	Six months ended June 30,
	2020			2019
(in thousands)				(As Recast)
Net cash provided by (used in):
Operating activities	$	22,457		$	(15,661	)
Investing activities	(597		)	(1,151		)
Financing activities	(1,375		)	16,204
Net increase in cash and cash equivalents	$	20,485		$	(608	)
Noncash investing and financing transactions:
Right of use assets obtained in exchange for new operating lease liabilities	$	—		$	3,022
Right of use assets obtained in exchange for new finance lease liabilities	1,050			1,630
Right of use assets disposed or adjusted modifying operating lease liabilities	586			1,651
Right of use assets disposed or adjusted modifying finance lease liabilities	(64		)	—
Interest paid	$	3,250		$	1,621

Our cash flows are primarily impacted from period to period by fluctuations in working capital. Factors such as our contract mix, commercial terms, days sales outstanding (“DSO”) and delays in the start of projects may impact our working capital. In line with industry practice, we accumulate costs during a given month then bill those costs in the current month for many of our contracts. While labor costs associated with these contracts are paid weekly and salary costs associated with the contracts are paid bi-weekly, certain subcontractor costs are generally not paid until we receive payment from our customers (contractual “pay-if-paid” terms). We have not historically experienced a large volume of write-offs related to our receivables and contract assets. We regularly assess our receivables for collectability and provide allowances for doubtful accounts where appropriate. We believe that our reserves for doubtful accounts are appropriate as of June 30, 2020 and December 31, 2019, but adverse changes in the economic environment may impact certain of our customers’ ability to access capital and compensate us for our services, as well as impact project activity for the foreseeable future.

The Company's existing current backlog is projected to provide substantial coverage of forecasted construction revenue for one year from the date of the financial statement issuance. Our current cash balance, together with cash we expect to generate from future operations (inclusive of actions we are taking to reduce costs and spending across our organization, in response to the COVID-19 pandemic) along with borrowings available under our 2019 Refinancing Agreement and 2019 ABL Credit Agreement, is expected to be sufficient to finance our short- and long-term capital requirements (or meet working capital requirements) for the next twelve months. In addition to the future operating cash flows of the Company, along with its existing borrowing availability and access to financial markets, the Company believes it will be able to meet any working capital and future operating requirements, and capital investment forecast opportunities for the next twelve months. If current economic conditions decline materially from information presently available or if project shutdowns recur in the fourth quarter of 2020 or the first quarter of 2021, the Company could be unable to meet its financial covenants, which would cause an event of default thereby classifying its debt as current. If the lenders were to call the debt, the Company might not have the available working capital to satisfy its outstanding debt obligations.

The following table represents our summarized working capital information:

(in thousands, except ratios)	As of June 30, 2020			As of December 31, 2019
Current assets	$	207,685		$	195,380
Current liabilities	(164,840		)	(156,869		)
Net working capital	$	42,845		$	38,511
Current ratio*	1.26			1.25

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* Current ratio is calculated by dividing current assets by current liabilities.

As discussed above and in Note 7 to the accompanying condensed consolidated financial statements, as of June 30, 2020, the Company was in compliance with all debt covenants as required by the 2019 Refinancing Credit Agreement.

Cash Flows Provided by (Used in) Operating Activities

Cash flows provided by operating activities were $22.5 million for the six months ended June 30, 2020 compared to cash flows used in operating activities of $15.7 million for the six months ended June 30, 2019. For the six months ended June 30, 2020, the key components included cash inflows of $3.6 million related to our accounts receivable, $4.9 million related to our contract assets, $16.3 million for our contract liabilities shifting from an underbilled to an overbilled position consistent with our renewed focus on project cash flows and $9.4 million related to accrued expenses and other current liabilities. These cash inflows were offset by outflows of $19.5 million related to our accounts payable, including retainage.

Cash flows used in operating activities were $15.7 million for the six months ended June 30, 2019. For the six months ended June 30, 2019, our cash usage in operating activities was significantly impacted by a $5.7 million increase in accounts receivable, a $4.7 million decrease in accounts payable, a $4.5 million decrease in contract assets, a $4.7 million increase in contract liabilities. The accounts receivable increase resulted primarily from our lower revenue volume and billing during the second quarter of 2019 in comparison to stronger revenue and billings for the fourth quarter of 2018. The reduction in accounts payable is consistent with our decrease in accounts receivable and attributable to our second quarter 2019 revenue volume decrease, as well as tighter management of our payable balances. Our decrease of $9.2 million in net contract assets resulted primarily from the combination of 2019 unbilled costs incurred on a Southern California region Construction project on which a claim and change orders are pending, additional work performed on a previously overbilled Florida Construction project that is nearing completion, the final settlement of a significant Michigan region project, and the effects of our second quarter 2019 overall revenue reduction as compared to the fourth quarter of 2018. The significant decreases in other current assets and accrued expenses and other current liabilities are primarily attributable to the $30.0 million lawsuit settlement payments referenced in Note 14 to the accompanying condensed consolidated financial statements. The settlement of this matter was entirely covered by the Company's insurance carriers.

Non-cash charges for depreciation and amortization were $3.1 million for the six months ended June 30, 2020 and $2.9 million for the six months ended June 30, 2019.

Cash Flows Used in Investing Activities

Cash flows used in investing activities were $0.6 million for the six months ended June 30, 2020 and $1.2 million for the six months ended June 30, 2019. The majority of our cash used for investing activities in both periods was for capital additions pertaining to tools and equipment, computer software and hardware purchases, office furniture and office related leasehold improvements.

Cash Flows Provided by (Used in) Financing Activities

Cash flows used in financing activities were $1.4 million for the six months ended June 30, 2020. Cash provided by financing activities was $16.2 million for the six months ended June 30, 2019. For the six months ended June 30, 2020, we borrowed and repaid $7.3 million on the 2019 Revolving Credit Facility and made capital lease payments of $1.3 million.

For the six months ended June 30, 2019, we both borrowed and repaid a total of $17.5 million on the Credit Agreement revolver (as defined below), and another $7.5 million on the 2019 Revolving Credit Facility. The Company also borrowed $38.6 million on its 2019 Refinancing Term Loan, which was used to repay, in its entirety, $14.3 million on the Credit Agreement Term Loan, $7.7 million on the Bridge Term Loan and $10.5 million on the Credit Agreement Revolver. The Company also recorded fair values of the CB Warrants liability and the embedded derivative liability which approximated $0.9 million and $0.4 million, respectively, on the Refinancing Closing Date. The Company also made capital lease payments of $1.1 million and payments of $3.3 million related to debt issuance costs for our April 2019 Refinancing Agreement. For the six months ended June 30, 2019, the Company's bank overdraft increased by $2.8 million, representing an increase in the Company's short-term obligation to its bank. Bank overdrafts represent outstanding checks in excess of cash on hand with a specific financial institution as of any balance sheet date.

Debt and Other Obligations

Credit Agreement

In 2016, LFS, a subsidiary of the Company, entered into the Credit Agreement (as amended, the “Credit Agreement”). The Credit Agreement consisted of a $25.0 million revolving line of credit (the “Credit Agreement revolver”) and a $24.0 million term loan

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(the “Credit Agreement term loan”), both with a maturity date of July 20, 2021. The Credit Agreement was collateralized by substantially all assets of LFS and its subsidiaries. Principal payments of $900,000 on the Credit Agreement term loan were due at the end of each quarter, beginning September 30, 2018, through maturity of the loan, with any remaining amounts due at maturity. Outstanding borrowings on both the Credit Agreement term loan and the Credit Agreement revolver bore interest at either the Base Rate (as defined in the Credit Agreement) or LIBOR (as defined in the Credit Agreement), plus the applicable additional margin, payable monthly. Mandatory prepayments were required upon the occurrence of certain events, including, among other things and subject to certain exceptions, equity issuances, changes of control of the Company, certain debt issuances, assets sales and excess cash flow.

The Credit Agreement included restrictions on, among other things and subject to certain exceptions, the Company and its subsidiaries’ ability to incur additional indebtedness, pay dividends or make other distributions, redeem or purchase capital stock, make investments and loans and enter into certain transactions, including selling assets, engaging in mergers or acquisitions and entering into transactions with affiliates. Loans under the Credit Agreement bore interest, at the borrower’s option, at either Adjusted LIBOR (“Eurodollar”) or a Base Rate, in each case, plus an applicable margin. The applicable margin with respect to any Base Rate loan was 5.00% per annum and with respect to a Eurodollar loan was 6.00% per annum.

The borrower was required to make principal payments on the Bridge Term Loan in the amount of $250,000 on the last business day of March, June, September and December of each year. The Bridge Term Loan had a maturity date of April 12, 2019. The Bridge Term Loan was guaranteed by the same guarantors (including Limbach Holdings, Inc., Limbach Facility Services LLC, Limbach Holdings LLC, Limbach Company LLC, Limbach Company LP, Harper Limbach LLC and Harper Limbach Construction LLC) and secured (on a pari passu basis) by the same collateral as the other loans under the Credit Agreement.

2019 Refinancing Agreement

On April 12, 2019 (the “Refinancing Closing Date”), LFS entered into a financing agreement (the “2019 Refinancing Agreement”) with the lenders thereto and Cortland Capital Market Services LLC, as collateral agent and administrative agent and CB Agent Services LLC, as origination agent (“CB”). The 2019 Refinancing Agreement consists of (i) a $40.0 million term loan (the “2019 Refinancing Term Loan”) and (ii) a new $25.0 million multi-draw delayed draw term loan (the “2019 Delayed Draw Term Loan” and, collectively with the 2019 Refinancing Term Loan, the “2019 Term Loans”). Proceeds from the 2019 Refinancing Term Loan were used to repay the then existing Credit Agreement, to pay related fees and expenses thereof and to fund working capital of the Borrowers (defined below). Management intends for proceeds of the 2019 Delayed Draw Term Loan to be used to fund permitted acquisitions under the 2019 Refinancing Agreement and related fees and expenses in connection therewith.

LFS, a wholly-owned subsidiary of the Company, and each of its subsidiaries are borrowers (the “Borrowers”) under the 2019 Refinancing Agreement. In addition, the 2019 Refinancing Agreement is guaranteed by the Company and LHLLC (each, a “Guarantor”, and together with the Borrowers, the “Loan Parties”).

The 2019 Refinancing Agreement is secured by a first-priority lien on the real property of the Loan Parties and a second-priority lien on substantially all other assets of the Loan Parties, behind the 2019 ABL Credit Agreement (as defined below). The respective lien priorities of the 2019 Refinancing Agreement and the 2019 ABL Credit Agreement are governed by an intercreditor agreement.

2019 Refinancing Agreement - Interest Rates and Fees

The interest rate on borrowings under the 2019 Refinancing Agreement is, at the Borrowers’ option, either LIBOR (with a 2.00% floor) plus 11.00% or a base rate (with a 3.00% minimum) plus 10.00%. At June 30, 2020 and June 30, 2019, the interest rates in effect on the 2019 Refinancing Term Loan were 13.00% and 10.54%, respectively.

2019 Refinancing Agreement - Other Terms and Conditions

The 2019 Refinancing Agreement matures on April 12, 2022, subject to certain adjustment. Required amortization is $1.0 million per quarter commencing with the fiscal quarter ending September 30, 2020. There is an unused line fee of 2.0% per annum on the undrawn portion of the 2019 Delayed Draw Term Loan, and there is a make-whole premium on prepayments made prior to the 19-month anniversary of the Refinancing Closing Date. This make-whole provision guarantees that the Company will pay no less than 18 months’ applicable interest to the lenders under the 2019 Refinancing Agreement. The 2019 Refinancing Agreement contains representations and warranties, and covenants which are customary for debt facilities of this type. Unless the Required Lenders (as defined in the 2019 Refinancing Agreement) otherwise consent in writing, the covenants limit the ability of the Company and its restricted subsidiaries to, among other things, (i) incur additional indebtedness or issue preferred stock, (ii) pay dividends or make distributions to the Company’s stockholders, (iii) purchase or redeem the Company’s equity interests, (iv) make

43

investments, (v) create liens on their assets, (vi) enter into transactions with the Company’s affiliates, (vii) sell assets and (viii) merge or consolidate with, or dispose of substantially all of the Company’s assets to, other companies.

In addition, the 2019 Refinancing Agreement includes customary events of default and other provisions that could require all amounts due thereunder to become immediately due and payable, either automatically or at the option of the lenders, if the Company fails to comply with the terms of the 2019 Refinancing Agreement or if other customary events occur.

Furthermore, the 2019 Refinancing Agreement also contains two financial maintenance covenants for the 2019 Refinancing Term Loan, including a requirement to have sufficient collateral coverage of the aggregate outstanding principal amount of the 2019 Refinancing Term Loans and as of the last day of each month for the total leverage ratio of the Company and its Subsidiaries (the “Total Leverage Ratio ”) not to exceed an amount beginning at 4.25 to 1.00 through June 30, 2019, and stepping down to 2.00 to 1.00 effective July 1, 2021. From July 1, 2019 through September 30, 2019, the Total Leverage Ratio may not exceed 4.00 to 1.00. As of August 31, 2019, the Company’s Total Leverage Ratio for the preceding twelve consecutive fiscal month period was 4.61 to 1.00, which did not meet the requirement for such ratio not to exceed 4.00 to 1.00. As of September 30, 2019, the Company’s Total Leverage Ratio for the preceding twelve consecutive fiscal month period was 2.85 to 1.00, which was in compliance with the 4.00 to 1.00 requirement. The lender has waived the event of default arising from this noncompliance as of August 31, 2019, while reserving its rights with respect to covenant compliance in future months. In addition, the parties to the 2019 Refinancing Agreement entered into an amendment which, among other changes, revises the maximum permitted Total Leverage Ratio, starting at 3.30 to 1.00 on October 1, 2019 with a peak ratio of 4.25 during March 2020 along with varying monthly rates culminating in the lowest Total Leverage Ratio of 2.00 to 1.00 on April 1, 2021 through the term of such agreement. The 2019 Refinancing Agreement contains a post-closing covenant requiring the remediation of the Company’s material weakness, as described in Item 9A of its 2018 Annual Report on Form 10-K, no later than December 31, 2020 and to provide updates as to the progress of such remediation, provided that, if such remediation has not been completed on or prior to December 31, 2019, (x) the Company shall be required to pay the post-closing fee pursuant to the terms of the Origination Agent Fee Letter (as defined in the 2019 Refinancing Agreement) and (y) the applicable margin shall be increased by 1.00% per annum for the period from January 1, 2020 until the date at which the material weakness is no longer disclosed or required to be disclosed in the Company’s SEC filings or audited financial statements of the Company or related auditor’s reports. As of December 31, 2019, the Company fully remediated its material weakness eliminating its disclosure in the Company's SEC filings, audited financial statements or related auditor’s reports.

In connection with the 2019 Refinancing Amendment Number One and Waiver, the parties amended certain provisions of the 2019 Refinancing Agreement, including, among other changes to: (i) require, commencing October 1, 2019, a 3.00% increase in the interest rate on borrowings under the 2019 Refinancing Agreement; (ii) require the approval of CB and, generally, the lenders representing at least 50.1% of the aggregate undrawn term loan commitment or unpaid principal amount of the term loans, prior to effecting any permitted acquisition; (iii) revise the maximum permitted Total Leverage Ratio, starting at 3.30 to 1.00 on October 1, 2019 with a peak ratio of 4.25 during March 2020 along with varying monthly rates culminating in the lowest Total Leverage Ratio of 2.00 to 1.00 on April 1, 2021 and thereafter through the term of the 2019 Refinancing Agreement; and (iv) require the liquidity of the loan parties, which is generally calculated by adding (a) unrestricted cash on hand of the Loan Parties maintained in deposit accounts subject to control agreements granting control to the collateral agent for the 2019 ABL Credit Agreement, to (b) the difference between (1) the lesser of (x) $15 million, as adjusted from time to time, and (y) 75% of certain customer accounts resulting from the sale of goods or services in the ordinary course of business minus certain reserves established by the Administrative Agent and (2) the sum of (x) the outstanding principal balance of all revolving loans under the 2019 ABL Credit Agreement plus (y) the aggregate undrawn available amount of all letters of credit then outstanding plus the amount of any obligations that arise from any draw against any letter of credit that have not been reimbursed by the borrowers or funded with a revolving loan under the 2019 ABL Credit Agreement (the “Loan Parties Liquidity”), as of the last day of any fiscal month ending on or after November 30, 2019, of at least $10,000,000. As a condition to executing the 2019 Refinancing Amendment Number One and Waiver, the loan parties will be required to pay a non-refundable waiver fee of $400,000 and a non-refundable amendment fee of $1,000,000 (the “PIK First Amendment Fee”, which shall be paid in kind by adding the PIK First Amendment Fee to the outstanding principal amount of the term loan under the 2019 Refinancing Agreement as additional principal obligations thereunder on and as of the effective date 2019 Refinancing Amendment Number One and Waiver).

2019 Refinancing Agreement - CB Warrants

In connection with the 2019 Refinancing Agreement, on the Refinancing Closing Date, the Company issued to CB and the other lenders under the 2019 Refinancing Agreement warrants (the “CB Warrants”) to purchase up to a maximum of 263,314 shares of the Company's common stock at an exercise price of $7.63 per share subject to certain adjustments, including for stock dividends, stock splits or reclassifications. The actual number of shares of common stock into which the CB Warrants will be exercisable at any given time will be equal to: (i) the product of (x) the number of shares equal to 2% of the Company’s issued and outstanding shares of common stock on the Refinancing Closing Date on a fully diluted basis and (y) the percentage of the total 2019 Delayed Draw Term Loan made as of the exercise date, minus (ii) the number of shares previously issued under the CB Warrants. As of

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the Refinancing Closing Date and June 30, 2020, no amounts had been drawn on the 2019 Delayed Draw Term Loan, so no portion of the CB Warrants was exercisable. The CB Warrants may be exercised for cash or on a “cashless basis,” subject to certain adjustments, at any time after the Refinancing Closing Date until the expiration of such warrant at 5:00 p.m., New York time, on the earlier of (i) the five (5) year anniversary of the Refinancing Closing Date, or (ii) the liquidation of the Company. 

Accounting for the 2019 Term Loans and CB Warrants

The CB Warrants represent a freestanding financial instrument that is classified as a liability because the CB Warrants meet the definition of a derivative instrument that does not meet the equity scope exception (i.e., the CB Warrants are not indexed to the entity’s own equity). In addition, the material weakness penalty described above was evaluated as an embedded derivative liability and bifurcated from the 2019 Term Loans as it represents a non-credit related embedded feature that provides for net settlement. Both the CB Warrants liability and the embedded derivative liability are required to be initially and subsequently measured at fair value. The initial fair values of the CB Warrants liability and the embedded derivative liability approximated $0.9 million and $0.4 million, respectively, on the Refinancing Closing Date. The Company estimated these fair values by using the Black-Scholes-Merton option pricing model and a probability-weighted discounted cash flow approach, respectively.

The CB Warrants liability is included in other long-term liabilities. The Company remeasured the fair value of the CB Warrants liability as of June 30, 2020 and recorded any adjustments as other income (expense). At June 30, 2020 and December 31, 2019, the CB Warrants liability was $0.3 million and $0.4 million, respectively. For the six months ended June 30, 2020, the Company recorded other income of $0.2 million to reflect the change in fair value of the CB Warrants liability. At June 30, 2020 and December 31, 2019, the embedded derivative liability was $0.0 million as the Company remediated the material weakness associated with the embedded derivative as of December 31, 2019, and the $0.4 million embedded derivative liability was fully reversed into other income at that date.

The proceeds for the 2019 Term Loan were first allocated to the CB Warrants liability and embedded derivative liability based on their respective fair values with a corresponding amount of $1.3 million recorded as a debt discount to the 2019 Term Loans. In addition, the Company incurred approximately $2.5 million of debt issuance costs for the 2019 Term Loans that have also been recorded as a debt discount. The combined debt discount from the CB Warrants liability, embedded derivative liability and the debt issuance costs are being amortized into interest expense over the term of the 2019 Term Loans using the effective interest method. The Company recorded interest expense for the amortization of the CB Warrants liability and embedded derivative debt discounts of $0.1 million for the six months ended June 30, 2020 and recorded an additional $0.4 million of interest expense for the amortization of the debt issuance costs for the six months ended June 30, 2020. The Company also recorded interest expense for the amortization of the CB Warrants liability and embedded derivative debt discounts of $0.1 million for the three months ended June 30, 2019 and recorded an additional $0.2 million of interest expense for the amortization of the debt issuance costs for the three months ended June 30, 2019.

2019 ABL Credit Agreement

On the Refinancing Closing Date, LFS also entered into a financing agreement with the lenders thereto and Citizens Bank, N.A., as collateral agent, administrative agent and origination agent (the “2019 ABL Credit Agreement” and, together with the 2019 Refinancing Agreement, the “Refinancing Agreements”). The 2019 ABL Credit Agreement consists of a $15.0 million revolving credit facility (the “2019 Revolving Credit Facility”). Proceeds of the 2019 Revolving Credit Facility may be used for general corporate purposes. On the Refinancing Closing Date, the Company had nothing drawn on the ABL Credit Agreement and $14.0 million of available borrowing capacity thereunder (net of a $1.0 million reserve imposed by the lender).

The Borrowers and Guarantors under the 2019 ABL Credit Agreement are the same as under the 2019 Refinancing Agreement.

The 2019 ABL Credit Agreement is secured by a second-priority lien on the real property of the Loan Parties (behind the 2019 Refinancing Agreement) and a first-priority lien on substantially all other assets of the Loan Parties.

2019 ABL Credit Agreement - Interest Rates and Fees

The interest rate on borrowings under the 2019 ABL Credit Agreement is, at the Borrowers’ option, either LIBOR (with a 2.0% floor) plus an applicable margin ranging from 3.00% to 3.50% or a base rate (with a 3.0% minimum) plus an applicable margin ranging from 2.00% to 2.50%. At June 30, 2020, the interest rate in effect on the 2019 ABL Credit Agreement was 5.25%.

2019 ABL Credit Agreement - Other Terms and Conditions

45

The 2019 ABL Credit Agreement matures on April 12, 2022. There is an unused line fee ranging from 0.250% to 0.375% per annum on undrawn amounts.

The 2019 ABL Credit Agreement contains representations and warranties, and covenants which are customary for debt facilities of this type. Unless the Required Lenders otherwise consent in writing, the covenants limit the ability of the Company and its restricted subsidiaries to, among other things, generally, to (i) incur additional indebtedness or issue preferred stock, (ii) pay dividends or make distributions to the Company’s stockholders, (iii) purchase or redeem the Company’s equity interests, (iv) make investments, (v) create liens on their assets, (vi) enter into transactions with the Company’s affiliates, (vii) sell assets other than in the ordinary course of business or another permitted disposition of assets and (viii) merge or consolidate with, or dispose of substantially all of the Company’s assets to, other companies.

The 2019 ABL Credit Agreement includes customary events of default and other provisions that could require all amounts due thereunder to become immediately due and payable, either automatically or at the option of the lenders, if the Company fails to comply with the terms of the 2019 ABL Credit Agreement or if other customary events occur.

The 2019 ABL Credit Agreement also contains a financial maintenance covenant for the 2019 Revolving Credit Facility, which is a requirement for the Total Leverage Ratio of the Company and its Subsidiaries not to exceed an amount beginning at 4.00 to 1.00 through September 30, 2019, and stepping down to 1.75 to 1.00 effective July 1, 2021. As of August 31, 2019, the Company’s Total Leverage Ratio for the preceding twelve consecutive fiscal month period was 4.61 to 1.00, which did not meet the requirement for such ratio not to exceed 4.00 to 1.00. As of September 30, 2019, the Company’s Total Leverage Ratio for the preceding twelve consecutive fiscal month period was 2.85 to 1.00, which was in compliance with the 4.00 to 1.00 requirement. The lender has waived the event of default arising from this noncompliance as of August 31, 2019, while reserving its rights with respect to covenant compliance in future months. In addition, the parties to the 2019 ABL Credit Agreement entered into an amendment which, among other changes revises the maximum permitted Total Leverage Ratio, starting at 3.30 to 1.00 on October 1, 2019 with a peak ratio of 4.25 during March 2020 along with varying monthly rates culminating in the lowest Total Leverage Ratio of 2.00 to 1.00 on April 1, 2021 through the term of such agreement.

In connection with the 2019 ABL Credit Amendment Number One and Waiver, the parties amended certain provisions of the 2019 ABL Credit Agreement, including, among other changes to (i) require the approval of the origination agent and, generally, the lenders representing at least 50.1% of the aggregate undrawn revolving loan commitment or unpaid principal amount of the term loans, prior to effecting any permitted acquisition; (ii) revise the maximum permitted Total Leverage Ratio, starting at 3.30 to 1.00 on October 1, 2019 with a peak ratio of 4.25 during March 2020 along with varying monthly rates culminating in the lowest Total Leverage Ratio of 2.00 to 1.00 on April 1, 2021 through the term of the 2019 ABL Credit Agreement; and (iii) require the Loan Parties Liquidity as of the last day of any fiscal month ending on or after November 30, 2019, of at least $10,000,000, as described above in the Amendment Number One to 2019 Refinancing Agreement and Waiver. As a condition to executing the 2019 ABL Credit Amendment Number One and Waiver, the loan parties was required to pay a non-refundable waiver fee of $7,500.

Accounting for the 2019 ABL Credit Agreement

As of June 30, 2020 and December 31, 2019, the Company had no amounts drawn on the 2019 ABL Credit Agreement. In addition, the Company incurred approximately $0.9 million of debt issuance costs for the 2019 ABL Credit Agreement that have been recorded as a non-current deferred asset. The deferred asset is being amortized into interest expense over the term of the 2019 Term ABL Credit Agreement using the effective interest method. The Company recorded interest expense of $0.1 million for the amortization the debt issuance costs for the six months ended June 30, 2020.

At June 30, 2020, the Company had total irrevocable letters of credit in the amount of $3.5 million under its self-insurance program as compared to $3.3 million at December 31, 2019.

The following table reflects our available funding capacity as of June 30, 2020:

(in thousands)
Cash & cash equivalents				$	28,829
Credit agreement:
Revolving credit facility	$	14,000
Outstanding revolving credit facility	—
Outstanding letters of credit	(3,510		)
Net credit agreement capacity available				10,490
Total available funding capacity				$	39,319

46

Cash Flow Summary

Management continues to devote additional resources to its billing and collection efforts, which has resulted in positive cash flow from operating activities for the six months ended June 30, 2020. Management continues to expect that growth in its service business, which is less sensitive to the cash flow issues presented by large construction projects, will positively impact our cash flow trends.

Provided that the Company’s lenders continue to provide working capital funding, we believe based on the Company's current reforecast that our current cash and cash equivalents of $28.8 million as of June 30, 2020, cash payments to be received from existing and new customers, and availability of borrowing under the revolving line of credit under our 2019 Refinancing Agreement (pursuant to which we had $14.0 million of availability as of June 30, 2020) will be sufficient to meet our working capital and capital expenditure requirements for at least the next 12 months. See Note 1 - Organization and Plan of Business Operations.

Surety Bonding

In connection with our business, we are occasionally required to provide various types of surety bonds that provide an additional measure of security to our customers for our performance under certain government and private sector contracts. Our ability to obtain surety bonds depends upon our capitalization, working capital, past performance, management expertise and external factors, including the capacity of the overall surety market. Surety companies consider such factors in light of the amount of our backlog that we have currently bonded and their current underwriting standards, which may change from time-to-time. The bonds we provide typically reflect the contract value. As of June 30, 2020 and December 31, 2019, the Company had approximately $128.6 million and $116.0 million in surety bonds outstanding, respectively. We believe that our $700.0 million bonding capacity provides us with a significant competitive advantage relative to many of our competitors which have limited bonding capacity.

Insurance and Self-Insurance

We purchase workers’ compensation and general liability insurance under policies with per-incident deductibles of $250,000 per occurrence. Losses incurred over primary policy limits are covered by umbrella and excess policies up to specified limits with multiple excess insurers. We accrue for the unfunded portion of costs for both reported claims and claims incurred but not reported. The liability for unfunded reported claims and future claims is reflected on the Condensed Consolidated Balance Sheets as current and non-current liabilities. The liability is computed by determining a reserve for each reported claim on a case-by-case basis based on the nature of the claim and historical loss experience for similar claims plus an allowance for the cost of incurred but not reported claims. The current portion of the liability is included in accrued expenses and other current liabilities on the Condensed Consolidated Balance Sheets. The non-current portion of the liability is included in other long-term liabilities on the Condensed Consolidated Balance Sheets.

We are self-insured related to medical and dental claims under policies with annual per-claimant and annual aggregate stop-loss limits. We accrue for the unfunded portion of costs for both reported claims and claims incurred but not reported. The liability for unfunded reported claims and future claims is reflected on the Condensed Consolidated Balance Sheets as a current liability in accrued expenses and other current liabilities.

The components of the self-insurance liability are reflected below as of June 30, 2020 and December 31, 2019:

(in thousands)	June 30, 2020		December 31, 2019
Current liability – workers’ compensation and general liability	$	514	$	703
Current liability – medical and dental	511		821
Non-current liability	452		382
Total liability	$	1,477	$	1,906
Restricted cash	$	113	$	113

The restricted cash balance represents cash set aside for the funding of workers’ compensation and general liability insurance claims. This amount is replenished when depleted, or at the beginning of each month.

Multiemployer Pension Plans

We participate in approximately 40 multiemployer pension plans (“MEPPs”) that provide retirement benefits to certain union employees in accordance with various collective bargaining agreements (“CBAs”). As one of many participating employers in these MEPPs, we are responsible with the other participating employers for any plan underfunding. Our contributions to a particular

47

MEPP are established by the applicable CBAs; however, required contributions may increase based on the funded status of an MEPP and legal requirements of the Pension Protection Act of 2006 (the “PPA”), which requires substantially underfunded MEPPs to implement a funding improvement plan (“FIP”) or a rehabilitation plan (“RP”) to improve their funded status. Factors that could impact funded status of an MEPP include, without limitation, investment performance, changes in the participant demographics, decline in the number of contributing employers, changes in actuarial assumptions and the utilization of extended amortization provisions. Assets contributed to the MEPPs by us may be used to provide benefits to employees of other participating employers. If a participating employer stops contributing to an MEPP, the unfunded obligations of the MEPP may be borne by the remaining participating employers.

An FIP or RP requires a particular MEPP to adopt measures to correct its underfunding status. These measures may include, but are not limited to an increase in a company’s contribution rate as a signatory to the applicable CBA, or changes to the benefits paid to retirees. In addition, the PPA requires that a 5.0% surcharge be levied on employer contributions for the first year commencing shortly after the date the employer receives notice that the MEPP is in critical status and a 10.0% surcharge on each succeeding year until a CBA is in place with terms and conditions consistent with the RP.

We could also be obligated to make payments to MEPPs if we either cease to have an obligation to contribute to the MEPP or significantly reduce our contributions to the MEPP because we reduce the number of employees who are covered by the relevant MEPP for various reasons, including, but not limited to, layoffs or closure of a subsidiary assuming the MEPP has unfunded vested benefits. The amount of such payments (known as a complete or partial withdrawal liability) would equal our proportionate share of the MEPPs’ unfunded vested benefits. We believe that certain of the MEPPs in which we participate may have unfunded vested benefits. Due to uncertainty regarding future factors that could trigger withdrawal liability, we are unable to determine (a) the amount and timing of any future withdrawal liability, if any, and (b) whether our participation in these MEPPs could have a material adverse impact on our financial condition, results of operations or liquidity.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

We are a smaller reporting company as defined in Rule 12b-2 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”); therefore, pursuant to Item 301(c) of Regulation S-K, we are not required to provide the information required by this Item.

Item 4. Controls and Procedures

Conclusion Regarding the Effectiveness of Disclosure Controls and Procedures

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of our disclosure controls and procedures, as defined in Rule 13a-15(e) under the Exchange Act. Based on that evaluation as of June 30, 2020, our Chief Executive Officer and Chief Financial Officer concluded that our Company’s disclosure controls and procedures were effective.

Changes in Internal Control over Financial Reporting

There was no change in our internal control over financial reporting identified in connection with the evaluation required by Rule 13a-15(d) and 15d-15(d) of the Exchange Act that occurred during the period covered by this Quarterly Report on Form 10-Q that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

As a result of the COVID-19 pandemic, certain employees began working remotely in March 2020 and continue to do so. Notwithstanding these changes to the working environment, we have not identified any material changes in our internal control over financial reporting. We will continue to monitor and assess the COVID-19 situation to determine any potential impact on the design and operating effectiveness of our internal controls over financial reporting.

Inherent Limitations on Effectiveness of Controls

In designing and evaluating the disclosure controls and procedures, management recognizes that any controls and procedures, no matter how well designed and operated, cannot provide absolute assurance of achieving the desired control objectives. Our management recognizes that any control system, no matter how well designed and operated, is based upon certain judgments and assumptions and cannot provide absolute assurance that its objectives will be met. Similarly, an evaluation of controls cannot provide absolute assurance that misstatements due to error or fraud will not occur or that all control issues and instances of fraud, if any, have been detected.

48

Part II

Item 1. Legal Proceedings

Lanzo Litigation

On November 13, 2019, claimant, Lanzo Trenchless Technologies, Inc. - North, filed a Demand for Arbitration in the state of Michigan against our wholly-owned subsidiary, Limbach Company LLC.  The demand seeks damages in excess of $0.4 million based upon the allegation that Limbach breached a construction contract by improperly terminating Lanzo’s subcontract, and for withholding payment from Lanzo based upon deficient performance.  Limbach has asserted a counterclaim seeking damages caused by Lanzo’s deficient performance. A binding arbitration proceeding is anticipated later in 2020.

Bernards Litigation

On January 23, 2020, plaintiff, Bernards Bros. Inc., filed a complaint in Superior Court of the State of California for the County of Los Angeles against Limbach Holdings, Inc.  The complaint alleges that our Southern California operations refused to honor a proposal made to Bernards to act as a subcontractor on a construction project, and that, as a result of the wrongful failure to honor the proposal, Bernards suffered damages in excess of $3.0 million, including alleged increased costs for hiring a different subcontractor to perform the work.  The Company intends to vigorously defend the suit.  The schedule of these proceedings has been delayed due to COVID-19 related court-closings, such that a date for trial is currently uncertain.

LA Excavating Litigation

On April 17, 2020, plaintiff, LA Excavating, Inc., filed a complaint against our wholly-owned subsidiary, Limbach Company LP, and several other parties, in Superior Court of the State of California, for the County of Los Angeles. The complaint seeks damages of approximately $1.0 million for alleged failure to pay contract balances and extra work ordered by Limbach, as well as seeking to enforce payment obligations under payment and stop notice release bonds. The Company disputes the allegations and intends to vigorously defend the suit. The schedule of these proceedings has been delayed due to COVID-19 related court-closings, such that a date for trial is currently uncertain.

Item 1A. Risk Factors

There have been no material changes to our risk factors previously disclosed in Part I, Item 1A of our 2019 Annual Report on Form 10-K. 

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

None.

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

None.

49

Item 6. Exhibits

Exhibit	Description
10.1	Offer Letter, dated May 11, 2020, between the Company and Michael M. McCann
31.1	Certification of the Chief Executive Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2	Certification of the Chief Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1	Certification of the Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of the Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS	XBRL Instance Document.
101.SCH	XBRL Taxonomy Extension Schema Document.
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document.
101.LAB	XBRL Taxonomy Extension Label Linkbase Document.
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document.
101.DEF	XBRL Taxonomy Extension Definition Document.

50

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	LIMBACH HOLDINGS, INC.
	/s/ Charles A. Bacon, III
	Charles A. Bacon, III
	Chief Executive Officer
	(Principal Executive Officer)
	/s/ Jayme L. Brooks
	Jayme L. Brooks
	Chief Financial Officer
	(Principal Financial and Accounting Officer)
Date: August 13, 2020

51

EX-10.1

EX-31.1

EXHIBIT 31.1

CERTIFICATION PURSUANT TO SECTION 302

CERTIFICATION OF CEO

I, Charles A. Bacon, III, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q for the quarter ended June 30, 2020 of Limbach Holdings, Inc. (the "registrant");

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

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

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

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

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

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

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

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

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

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

	/s/ Charles A. Bacon, III
	Charles A. Bacon, III
	Chief Executive Officer
Date: August 13, 2020

EX-31.2

EXHIBIT 31.2

CERTIFICATION PURSUANT TO SECTION 302

CERTIFICATION OF CFO

I, Jayme L. Brooks, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q for the quarter ended June 30, 2020 of Limbach Holdings, Inc. (the "registrant");

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

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

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

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

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

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

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

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

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

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

	/s/ Jayme L. Brooks
	Jayme L. Brooks
	Chief Financial Officer
Date: August 13, 2020

EX-32.1

EXHIBIT 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of Limbach Holdings, Inc. (the “Company”) for the quarter ended June 30, 2020 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned Charles A. Bacon, III, the Chief Executive Officer of the Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of the undersigned’s knowledge and belief:

(1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. Section 78m(a) or 78o(d)); and

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

Date: August 13, 2020
By	/s/ Charles A. Bacon, III
Charles A. Bacon, III, Chief Executive Officer
(Principal Executive Officer)

EX-32.2

EXHIBIT 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of Limbach Holdings, Inc. (the “Company”) for the quarter ended June 30, 2020 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned Jayme L. Brooks, the Chief Financial Officer of the Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of the undersigned’s knowledge and belief:

(1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. Section 78m(a) or 78o(d)); and

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

Date: August 13, 2020
By	/s/ Jayme L. Brooks
Jayme L. Brooks, Chief Financial Officer
(Principal Financial Officer)

XML

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2020	Aug. 12, 2020
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Entity Registrant Name	Limbach Holdings, Inc.
Entity Central Index Key	0001606163
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		7,884,202
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Shell Company	false

XML

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 28,829	$ 8,344
Restricted cash	113	113
Accounts receivable, net	101,451	105,067
Contract assets	72,287	77,188
Income tax receivable	665	494
Other current assets	4,340	4,174
Total current assets	207,685	195,380
Property and equipment, net	20,161	21,287
Intangible assets, net	11,894	12,311
Goodwill	6,129	6,129
Operating lease right-of-use assets	19,616	21,056
Deferred tax asset	3,988	4,786
Other assets	530	668
Total assets	270,003	261,617
Current liabilities
Current portion of long-term debt	6,414	4,425
Current operating lease liabilities	3,681	3,750
Accounts payable, including retainage	66,748	86,267
Contract liabilities	58,624	42,370
Accrued expenses and other current liabilities	29,373	20,057
Total current liabilities	164,840	156,869
Long-term debt	37,521	38,868
Long-term operating lease liabilities	16,502	18,247
Other long-term liabilities	940	763
Total liabilities	219,803	214,747
Commitments and contingencies
STOCKHOLDERS’ EQUITY
Common stock, $0.0001 par value; 100,000,000 shares authorized, 7,853,377 issued and outstanding at June 30, 2020 and 7,688,958 at December 31, 2019	1	1
Additional paid-in capital	56,992	56,557
Accumulated deficit	(6,793)	(9,688)
Total stockholders’ equity	50,200	46,870
Total liabilities and stockholders’ equity	$ 270,003	$ 261,617

XML

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Common stock, par or stated value per share (in usd per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares, issued (in shares)	7,853,377	7,688,958
Common stock, shares, outstanding (in shares)	7,853,377	7,688,958

XML

Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Statement [Abstract]
Revenue	$ 135,185	$ 132,603	$ 273,957	$ 266,350
Cost of revenue	114,850	114,908	235,398	229,031
Gross profit	20,335	17,695	38,559	37,319
Operating expenses:
Selling, general and administrative expenses	13,752	17,079	30,552	33,124
Amortization of intangibles	274	175	417	350
Total operating expenses	14,026	17,254	30,969	33,474
Operating income	6,309	441	7,590	3,845
Other income (expenses):
Interest expense, net	(2,137)	(1,597)	(4,295)	(2,430)
Gain (loss) on disposition of property and equipment	(13)	9	17	21
Loss on debt extinguishment	0	(513)	0	(513)
Gain (loss) on change in fair value of warrant liability	(102)	(103)	59	(103)
Total other expenses	(2,252)	(2,204)	(4,219)	(3,025)
Income (loss) before income taxes	4,057	(1,763)	3,371	820
Income tax provision (benefit)	1,110	(474)	476	261
Net income (loss)	$ 2,947	$ (1,289)	$ 2,895	$ 559
Income (loss) per common share:
Basic (in usd per share)	$ 0.38	$ (0.17)	$ 0.37	$ 0.07
Diluted (in usd per share)	$ 0.37	$ (0.17)	$ 0.37	$ 0.07
Weighted average number of shares outstanding:
Basic (in shares)	7,845,515	7,643,133	7,821,594	7,643,133
Diluted (in shares)	7,905,368	7,643,133	7,878,246	7,717,484

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Condensed Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional paid-in capital	Accumulated deficit
Beginning balance at Dec. 31, 2018	$ 46,368	$ 1	$ 54,791	$ (8,424)
Beginning balance (in shares) at Dec. 31, 2018		7,592,911
Stock-based compensation	367		367
Shares issued related to vested restricted stock units	0
Shares issued related to vested restricted stock units (in shares)		50,222
Net income (loss)	1,847			1,847
Ending balance at Mar. 31, 2019	49,093	$ 1	55,158	(6,066)
Ending balance (in shares) at Mar. 31, 2019		7,643,133
Beginning balance at Dec. 31, 2018	46,368	$ 1	54,791	(8,424)
Beginning balance (in shares) at Dec. 31, 2018		7,592,911
Net income (loss)	559
Net income (loss) | Accounting Standards Update 2016-02	0
Ending balance at Jun. 30, 2019	48,319	$ 1	55,673	(7,355)
Ending balance (in shares) at Jun. 30, 2019		7,643,133
Beginning balance at Mar. 31, 2019	49,093	$ 1	55,158	(6,066)
Beginning balance (in shares) at Mar. 31, 2019		7,643,133
Stock-based compensation	515		515
Net income (loss)	(1,289)			(1,289)
Net income (loss) | Accounting Standards Update 2016-02	0
Ending balance at Jun. 30, 2019	48,319	$ 1	55,673	(7,355)
Ending balance (in shares) at Jun. 30, 2019		7,643,133
Beginning balance at Dec. 31, 2019	46,870	$ 1	56,557	(9,688)
Beginning balance (in shares) at Dec. 31, 2019		7,688,958
Stock-based compensation	295		295
Shares issued related to vested restricted stock units	0
Shares issued related to vested restricted stock units (in shares)		104,905
Net income (loss)	(52)			(52)
Ending balance at Mar. 31, 2020	47,113	$ 1	56,852	(9,740)
Ending balance (in shares) at Mar. 31, 2020		7,793,863
Beginning balance at Dec. 31, 2019	46,870	$ 1	56,557	(9,688)
Beginning balance (in shares) at Dec. 31, 2019		7,688,958
Net income (loss)	2,895
Ending balance at Jun. 30, 2020	50,200	$ 1	56,992	(6,793)
Ending balance (in shares) at Jun. 30, 2020		7,853,377
Beginning balance at Mar. 31, 2020	47,113	$ 1	56,852	(9,740)
Beginning balance (in shares) at Mar. 31, 2020		7,793,863
Stock-based compensation	140		140
Shares issued related to vested restricted stock units	0
Shares issued related to vested restricted stock units (in shares)		59,514
Net income (loss)	2,947			2,947
Ending balance at Jun. 30, 2020	$ 50,200	$ 1	$ 56,992	$ (6,793)
Ending balance (in shares) at Jun. 30, 2020		7,853,377

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Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net income	$ 2,895	$ 559
Adjustments to reconcile net income to cash provided by (used in) operating activities:
Depreciation and amortization	3,140	2,873
Provision for doubtful accounts	27	33
Stock-based compensation expense	435	882
Noncash operating lease expense	2,025	1,818
Amortization of debt issuance costs	1,080	510
Deferred income tax (benefit) provision	798	214
Gain on sale of property and equipment	(17)	(21)
Loss on debt extinguishment	0	513
Gain on change in fair value of warrant liability	(59)	103
Changes in operating assets and liabilities:
Accounts receivable	3,588	(5,737)
Contract assets	4,901	(4,476)
Other current assets	(166)	30,138
Accounts payable, including retainage	(19,519)	(4,651)
Prepaid income taxes	(171)	85
Accrued taxes payable	(11)	10
Contract liabilities	16,254	(4,686)
Operating lease liabilities	(2,399)	(1,818)
Accrued expenses and other current liabilities	9,419	(31,923)
Other long-term liabilities	237	(87)
Net cash provided by (used in) operating activities	22,457	(15,661)
Cash flows from investing activities:
Proceeds from sale of property and equipment	64	77
Advances to joint ventures	(1)	1
Purchase of property and equipment	(660)	(1,229)
Net cash used in investing activities	(597)	(1,151)
Cash flows from financing activities:
Increase in bank overdrafts	0	2,783
Payments on Credit Agreement term loan	0	(14,335)
Proceeds from Credit Agreement revolver	0	17,500
Payments on Credit Agreement revolver	0	(17,500)
Proceeds from 2019 Revolving Credit Facility	7,250	7,500
Payments on 2019 Revolving Credit Facility	(7,250)	(7,500)
Proceeds from 2019 refinancing Term Loan, net of debt discount	0	38,643
Warrants issued in conjunction with the 2019 Refinancing Term Loan	0	969
Embedded derivative associated with the 2019 Refinancing Term Loan	0	388
Payments on Bridge Term Loan	0	(7,736)
Payments on finance leases	(1,285)	(1,140)
Payments of debt issuance costs	0	(3,339)
Taxes paid related to net-share settlement of equity awards	(90)	(29)
Net cash (used in) provided by financing activities	(1,375)	16,204
Increase in cash, cash equivalents and restricted cash	20,485	(608)
Cash, cash equivalents and restricted cash, beginning of period	8,457	1,732
Cash, cash equivalents and restricted cash, end of period	28,942	1,124
Noncash investing and financing transactions:
Right of use assets obtained in exchange for new operating lease liabilities	0	3,022
Right of use assets obtained in exchange for new finance lease liabilities	1,050	1,630
Right-of-use assets disposed or adjusted modifying operating leases liabilities	586	1,651
Right-of-use assets disposed or adjusted modifying finance leases liabilities	(64)	0
Interest paid	$ 3,250	$ 1,621

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Organization and Plan of Business Operations

6 Months Ended

Jun. 30, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization and Plan of Business Operations

Organization and Plan of Business Operations

Limbach Holdings, Inc. (the “Company,” “we” or “us”), is a Delaware corporation headquartered in Pittsburgh, Pennsylvania that was formed on July 20, 2016, as a result of a business combination with Limbach Holdings LLC (“LHLLC”). The Company’s condensed consolidated financial statements include the accounts of Limbach Holdings, Inc. and its wholly-owned subsidiaries, including LHLLC, Limbach Facility Services LLC, Limbach Company LLC, Limbach Company LP, Harper Limbach LLC, and Harper Limbach Construction LLC.

We operate in two segments, (i) Construction, in which we generally manage large construction or renovation projects that involve primarily heating, ventilation, and air conditioning (“HVAC”), plumbing, or electrical services, and (ii) Service, in which we provide maintenance or service primarily on HVAC, plumbing or electrical systems. This work is primarily performed under fixed price, modified fixed price, and time and material contracts over periods of typically less than two years. The Company's customers operate in several different industries, including healthcare, education, sports and entertainment, infrastructure, government, hospitality, commercial, manufacturing, mission critical, and industrial manufacturing. The Company operates primarily in the Northeast, Mid-Atlantic, Southeast, Midwest, and Southwestern regions of the United States.

Emerging Growth Company

Section 102(b)(1) of the Jumpstart Our Business Startups Act (“JOBS Act”) exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a registration statement under the Securities Act of 1933, as amended, declared effective or do not have a class of securities registered under the Securities Exchange Act of 1934, as amended (the “Exchange Act”) are required to comply with the new or revised financial accounting standards. The JOBS Act provides that a company can elect to opt out of the extended transition period and comply with the requirements that apply to non-emerging growth companies but any such election to opt out is irrevocable. We ceased to qualify as an emerging growth company on December 31, 2019. Accordingly, we are required to comply with new or revised financial accounting standards as a public business entity.

Impact of the COVID-19 Pandemic

In March 2020, the World Health Organization declared the outbreak of COVID-19 a global pandemic. The COVID-19 pandemic has caused significant disruption and volatility on a global scale resulting in, among other things, an economic slowdown and the possibility of a continued economic recession. In response to the COVID-19 outbreak, national and local governments around the world instituted certain measures, including travel bans, prohibitions on group events and gatherings, shutdowns of certain non-essential businesses, curfews, shelter-in-place orders and recommendations to practice social distancing. The various governmental actions have been and remain applicable to Limbach's operations in different ways, often varying by state. In some instances, these orders continued to result in shutdowns of certain projects in our Construction and Service segments into the three months ended June 30, 2020. In limited instances, projects chose to shutdown work irrespective of the existence or applicability of government action. In most markets, construction is considered an essential business and Limbach continued to staff its projects and perform work during the three months ended June 30, 2020 and has since then seen most all of the projects that were in progress restart. As Limbach's operations have been deemed essential, we have taken several measures to combat the COVID-19 downturn. The duration or recurrence of these measures and the impact of COVID-19 is unknown and may be extended, and additional measures may be necessary. The New England region was the only branch where all construction activity was prohibited for a period of time. In addition to project suspensions in the New England region, each of our other branches experienced select project suspensions and were adversely impacted by COVID-19 related regulation. In May, much of the COVID-19 regulations that caused shutdowns of projects in the New England region were lifted and all of the projects that were suspended in that region resumed operations, as well as the other projects that were impacted by similar suspensions in each of our other branches also resumed. In the Service segment, the branches are currently experiencing a slowdown in some types of work due to restrictions on building access but began to see improvement start in the month of July. As building access returns, the branches are expecting building owners to maintain or retrofit current facilities in lieu of funding larger capital projects.

During the first half of 2020, we took several actions to combat the COVID-19 outbreak induced downturn in our business including, but not limited to, the following:

• Identification of projects that have been shut down and methods for seeking to preserve any contractual entitlement that may exist;

• Establishment of a task force to identify possible types and areas of impact from COVID-19 for both shutdown and continuing operations;

• Examination of the Company's productivity and potential impact on gross profit as a result of COVID-19;

• Implementation of the Company's pandemic response plan;

• Implemented our furlough and work schedule reduction plans, as well as permanent reductions in force;

• Suspended substantially all discretionary, non-essential expenditures, including but not limited to, auto allowances, deferral of rent ranging between 1 and 3 months, 10% salary reduction for a select group of corporate and regional management and cost reduction opportunities identified by our external consultant; and

• Continued our hiring freeze.

During the month of July 2020, with the return of project and service work, we removed the 10% salary reduction for the select group of corporate and regional management, returned auto allowances, reinstated positions, removed schedule reduction plans and discontinued our hiring freeze.

In addition to the above actions taken during the initial impacts of COVID-19, we continue to take steps to minimize the adverse impacts of the COVID-19 pandemic on our business and to protect the safety of our employees and continue to emphasize more frequent washing of hands and tools, social distancing, wearing masks and work protocols. Limbach's COVID-19 policy is written based on the best practices provided by the Centers for Disease Control and Prevention (“CDC”) and Occupational Safety and Health Administration for essential workers. Our updated Work From Home Policy, along with the Company's business continuity planning and information technology enhancements have enabled an orderly transition to remote work and facilitated social distancing for salaried employees.

Testing and inpatient treatment for COVID-19 is covered under our medical plan and fees have been waived since the onset of the pandemic. Counseling is available through our employee assistance plan to assist employees with financial, mental and emotional stress related to the virus and other issues.  

Management continues to perform a reforecast of its 2020 and 2021 financial plans on a monthly basis. For the period ended June 30, 2020, we assessed a variety of factors, including but not limited to projects in our Construction and Service segments currently being impacted or delayed, construction industry financial forecasts for the remainder of 2020, and the impact of certain cost-cutting measures implemented during the end of the our first fiscal quarter. Based on these factors we assumed a measured recovery in revenue and gross profit that commenced in May and returning to normal revenue and gross profit levels in Q4 2020. However, it is difficult to identify the nature and extent of the COVID-19 impacts and fully estimate any costs associated with its impacts. We believe these impacts will become more defined over time and any actual cost impacts are expected to be more readily discernible as projects continue to progress towards completion. Based on management's current reforecast, management projects compliance with the financial covenants associated with its current credit agreements for the next 12 months.

While management has used all currently available information in its forecasts, the ultimate impact of the COVID-19 pandemic on our business, results of operations, financial condition and cash flows is highly uncertain, cannot be accurately predicted and is dependent on future developments, including the duration of the pandemic and the related length of its impact on the global economy, such as a lengthy or severe recession or any other negative trend in the U.S. or global economy, and any new information that may emerge concerning the COVID-19 outbreak and the actions to contain it or treat its impact. The continued impact on our business as a result of COVID-19 pandemic could result in a material adverse effect on our business, results of operations, financial condition, liquidity and prospects in the near-term and beyond 2020.

On March 27, 2020, the Coronavirus Aid Relief and Economic Security Act (the “CARES Act”) was signed into law. The CARES Act provides opportunities for additional liquidity, loan guarantees and other government programs to support companies affected by the COVID-19 pandemic and their employees. The Company elected to utilize the option to defer payment of certain payroll taxes and utilize certain income tax updates (i.e. NOL carryback).

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Significant Accounting Policies

6 Months Ended

Jun. 30, 2020

Accounting Policies [Abstract]

Significant Accounting Policies

Significant Accounting Policies

Basis of Presentation

Condensed Consolidated Financial Statements

The accompanying unaudited Condensed Consolidated Financial Statements have been prepared in accordance with instructions to the Quarterly Report on Form 10-Q and Rule 8-03 of Regulation S-X for smaller reporting companies. Consequently, certain information and note disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”) have been condensed or omitted pursuant to those rules and regulations, although the Company believes that the disclosures made are adequate to make the information not misleading. Readers of this report should refer to the consolidated financial statements and the notes thereto included in our most recent Annual Report on Form 10-K filed with the Securities and Exchange Commission (the “SEC”) on May 12, 2020. 

Unaudited Interim Financial Information

The accompanying interim Condensed Consolidated Balance Sheets, Condensed Consolidated Statements of Operations, Condensed Consolidated Statements of Stockholders’ Equity and Condensed Consolidated Statements of Cash Flows for the periods presented are unaudited. Also, within the notes to the Condensed Consolidated Financial Statements, we have included unaudited information for these interim periods. These unaudited interim Condensed Consolidated Financial Statements have been prepared in accordance with GAAP. In our opinion, the accompanying unaudited Condensed Consolidated Financial Statements contain all normal and recurring adjustments necessary for a fair statement of the Company’s financial position as of June 30, 2020, and its results of operations and its cash flows for the six months ended June 30, 2020. The results for the six months ended June 30, 2020 are not necessarily indicative of the results to be expected for the year ending December 31, 2020.

The Condensed Consolidated Balance Sheet as of December 31, 2019 was derived from our audited financial statements included in our Annual Report on Form 10-K filed with the SEC on May 12, 2020, but is presented as condensed and does not contain all of the footnote disclosures from the annual financial statements.

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Accounting Standards

6 Months Ended

Jun. 30, 2020

Accounting Changes and Error Corrections [Abstract]

Accounting Standards

Accounting Standards

Recently Adopted Accounting Standards

New Revenue Recognition Standard

In May 2014, the FASB issued Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers (Topic 606), as amended by subsequent ASUs (collectively, “ASC Topic 606”) which amends the existing accounting standards for revenue recognition and establishes principles for recognizing revenue upon the transfer of promised goods or services to customers based on the expected consideration to be received in exchange for those goods or services. Effective December 31, 2019, management adopted ASC Topic 606 for the annual and quarterly periods beginning after January 1, 2019 using a modified retrospective transition approach. The financial information for the three and six months ended June 30, 2019 has been recast to conform to the new standard.

The adoption of ASC Topic 606 did not have an impact on revenue of our fixed-price and other service contracts. However, it did impact revenue of our construction-type contracts within our construction and service segments specifically in accounting for warranties. For many of our construction-type contracts, we previously included assurance-type warranties in total estimated project costs. Under ASC Topic 606, the estimated cost of satisfying assurance-type warranties is accrued in accordance with the guidance in ASC Topic 460, Guarantees. Upon adoption of ASC Topic 606, we removed estimated and actual warranty costs at the contract level and recognized a warranty liability and expense in direct proportion to the cost-to-cost method progress towards completion of the associated contract, which had a $0.6 million effect on our opening accumulated deficit balance at January 1, 2019.

The Company also offers service-type warranties on certain construction-type projects. These service-type warranties were not accounted for as a separate performance obligation prior to the adoption of ASC Topic 606. Upon adoption of ASC Topic 606, we allocated a portion of the contract's transaction price to the service-type warranty based on its estimated standalone selling price. The accounting for service-type warranties under ASC Topic 606 did not have a material impact on the condensed consolidated financial statements.

In addition, as of January 1, 2019, we began to separately present contract assets and liabilities on the consolidated balance sheets. Contract assets include amounts due under contractual retainage provisions that were previously included in accounts receivable as well as costs and estimated earnings in excess of billings on uncompleted contracts that were previously separately presented. Contract liabilities include billings in excess of costs and estimated earnings on uncompleted contracts that were previously separately presented and provisions for losses. See Note 5 - Contract Assets and Liabilities for further information.

The adoption of ASC Topic 606 had no impact on the cash flows provided by operating activities in the Company's condensed consolidated statements of cash flows.

Notes 2, 4, 5, and 16 include additional information relating to our adoption of ASC Topic 606. Note 12 includes information regarding our revenue disaggregated by segment.

Refer to the section, Effects of Adoption of ASC 606 and ASC 842 on Condensed Consolidated Financial Statements, below for additional disclosures around the quantitative impacts that the adoption of ASC Topic 606 had on our condensed consolidated financial statements.

New Leasing Standard

In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-02, Leases (Topic 842), as amended and supplemented by subsequent ASUs (collectively, “ASC Topic 842”). ASC Topic 842 amends the existing guidance in Accounting Standards Codification (“ASC”) 840, Leases. This ASU requires, among other things, the recognition of lease right-of-use (“ROU”) assets and lease liabilities by lessees for those leases currently classified as operating leases. Effective December 31, 2019, management adopted ASC Topic 606 for the annual and quarterly periods beginning after January 1, 2019 using a modified retrospective transition approach. The financial information for the quarter-ended June 30, 2019 has been recast to conform to the new standard.

The Company elected the package of practical expedients which provides relief from having to reassess (1) whether any expired or existing contracts contain leases, (2) lease classification (as operating or financing) for any expired or existing leases, and (3) initial direct costs for any existing leases. The Company also elected not to separate non-lease components from lease components and did not elect the hindsight practical expedient.

The adoption of ASC Topic 842 had no impact to the Company's condensed consolidated statements of operations or the consolidated cash flows provided by operating and financing activities in the Company's condensed consolidated statements of cash flows.

Refer to Note 13 - Leases for additional information regarding the impact of the adoption of ASC Topic 842 on the Company's financial position.

Additionally, refer to the section, Effects of Adoption of ASC 606 and ASC 842 on Condensed Consolidated Financial Statements, below for additional disclosures around the quantitative impacts that the adoption of ASC Topic 842 had on our condensed consolidated financial statements.

Effects of Adoption of ASC 606 and ASC 842 on Condensed Consolidated Financial Statements

The effect of the changes made to the Company's condensed consolidated June 30, 2019 balance sheet and condensed consolidated statement of operations for the three and six month periods ended June 30, 2019 for the adoption of ASC Topic 606 and ASC Topic 842 were as follows:

CONDENSED CONSOLIDATED BALANCE SHEET
(Unaudited)
(in thousands)	Previously Reported Balance as of June 30, 2019(a)		Adjustments due to ASC Topic 606		Adjustments due to ASC Topic 842		Balance as of June 30, 2019 (As Recast)
Assets
Accounts receivable, net (b)	142,761		(31,236	)	—		111,525
Contract assets	—		68,285		—		68,285
Costs and estimated earnings in excess of billings on uncompleted contracts	36,030		(36,030	)	—		—
Other current assets	4,637		1		—		4,638
Operating lease right-of-use assets (c)	—		—		22,685		22,685
Deferred tax asset	4,170		(207	)	—		3,963
Liabilities
Contract liabilities	—		44,131		—		44,131
Billings in excess of costs and estimated earnings on uncompleted contracts	46,536		(46,536	)	—		—
Accrued expenses and other current liabilities	24,575		2,663		—		27,238
Current portion of long-term debt	2,173		—		62		2,235
Current operating lease liabilities (c)	—		—		3,824		3,824
Long-term debt	39,983		—		65		40,048
Long-term operating lease liabilities (c)	—		—		19,656		19,656
Other long-term liabilities	2,498		—		(794	)	1,704
Stockholders' Equity
Accumulated deficit	(7,782	)	555		(128	)	(7,355	)

(a) Balances as previously reported on the Company's Quarterly Report on Form 10-Q for the quarter ended June 30, 2019.

(b) Prior to the adoption of ASC Topic 606, retainage receivable was included within accounts receivable, net.

(c) Prior to the adoption of ASC Topic 842, operating lease right-of-use assets and current and long-term operating lease liabilities were not recorded on the Company's condensed consolidated balance sheets.

CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS
(Unaudited)
	Three months ended June 30, 2019
(in thousands)	Previously Reported(a)			Adjustments due to ASC Topic 606			Adjustments due to ASC Topic 842		As Recast
Revenue
Construction	$	104,925		$	(166	)	—		$	104,759
Service	27,828			16			—		27,844
Total revenue	132,753			(150		)	—		132,603
Cost of revenue
Construction	94,503			(427		)	—		94,076
Service	20,849			(17		)	—		20,832
Total cost of revenue	115,352			(444		)	—		114,908
Gross profit	17,401			294			—		17,695
Operating expenses:
Selling, general and administrative expenses	17,079			—			—		17,079
Amortization of intangibles	175			—			—		175
Total operating expenses	17,254			—			—		17,254
Operating income	147			294			—		441
Other income (expenses):
Interest expense, net	(1,597		)	—			—		(1,597		)
Gain on disposition of property and equipment	9			—			—		9
Loss on debt extinguishment	(513		)	—			—		(513		)
Loss on change in fair value of warrant liability	(103		)	—			—		(103		)
Total other expenses	(2,204		)	—			—		(2,204		)
Income before income taxes	(2,057		)	294			—		(1,763		)
Income tax provision (benefit)	(553		)	79			—		(474		)
Net loss	$	(1,504	)	$	215		$	—	$	(1,289	)

(a) Balances as previously reported on the Company's Quarterly Report on Form 10-Q for the three months ended June 30, 2019.

CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS
(Unaudited)
	Six months ended June 30, 2019
(in thousands)	Previously Reported(a)			Adjustments due to ASC Topic 606			Adjustments due to ASC Topic 842		As Recast
Revenue
Construction	$	209,599		$	(380	)	$	—	$	209,219
Service	57,105			26			—		57,131
Total revenue	266,704			(354		)	—		266,350
Cost of revenue
Construction	185,864			(244		)	—		185,620
Service	43,406			5			—		43,411
Total cost of revenue	229,270			(239		)	—		229,031
Gross profit	37,434			(115		)	—		37,319
Operating expenses:
Selling, general and administrative expenses	33,124			—			—		33,124
Amortization of intangibles	350			—			—		350
Total operating expenses	33,474			—			—		33,474
Operating income	3,960			(115		)	—		3,845
Other income (expenses):
Interest expense, net	(2,430		)	—			—		(2,430		)
Gain on disposition of property and equipment	21			—			—		21
Loss on debt extinguishment	(513		)	—			—		(513		)
Loss on change in fair value of warrant liability	(103		)	—			—		(103		)
Total other expenses	(3,025		)	—			—		(3,025		)
Income before income taxes	935			(115		)	—		820
Income tax provision (benefit)	293			(32		)	—		261
Net income	$	642		$	(83	)	$	—	$	559

(a) Balances as previously reported on the Company's Quarterly Report on Form 10-Q for the six months ended June 30, 2019.

Recent Accounting Pronouncements

In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments, which introduced an expected credit loss methodology for the measurement and recognition of credit losses on most financial instruments, including trade receivables and off-balance sheet credit exposure. Under this guidance, an entity is required to consider a broader range of information to estimate expected credit losses, which may result in earlier recognition of losses. This ASU also requires disclosure of information regarding how a company developed its allowance, including changes in the factors that influenced management’s estimate of expected credit losses and the reasons for those changes. The guidance is effective for smaller reporting companies on January 1, 2023 with early adoption permitted. The adoption of this standard will be through a cumulative-effect adjustment to retained earnings as of the effective date. Based on our historical experience, the Company does not expect that this pronouncement will have a significant impact in its financial statements or on the estimate of the allowance for doubtful accounts.

In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740), which affects general principles within Topic 740, and is meant to simplify and reduce the cost of accounting for income taxes. It removes certain exceptions to the general principles in Topic 740 and simplifies areas including franchise taxes that are partially based on income, transactions with a government that result in a step up in the tax basis of goodwill, the incremental approach for intraperiod tax allocation, interim period income tax accounting for year-to-date losses that exceed anticipated losses and enacted changes in tax laws in interim periods. The changes are effective for annual periods beginning after December 15, 2020. Management is currently assessing the impact of this pronouncement on its condensed consolidated financial statements.

In March 2020, the FASB issued ASU 2020-03, Codification Improvements to Financial Instruments, which makes improvements to financial instruments guidance. The amendments make the Codification easier to understand and easier to apply by eliminating inconsistencies and providing clarifications. With regard to amendments related to Issue 1, Issue 2, Issue 4 and Issue 5, for public business entities, the amendments are effective upon issuance of this final ASU. With regard to amendments related to Issue 6 and Issue 7, for entities that have not yet adopted the guidance in Update 2016-13, the effective dates and the transition requirements for these amendments are the same as the effective date and transition requirements in ASU 2016-13. For entities that have adopted the guidance in ASU 2016-13, the amendments are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. We do not expect the adoption of this pronouncement to have a material impact on our condensed consolidated financial statements or presentation thereof.

The FASB also issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting in March 2020. The new guidance provides optional expedients for applying GAAP to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. The guidance is effective prospectively as of March 12, 2020 through December 31, 2022 and interim periods within those fiscal years. We do not expect the adoption of this ASU to have a material impact on our condensed consolidated financial statements or presentation thereof.

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Accounts Receivable and Allowance for Doubtful Accounts

6 Months Ended

Jun. 30, 2020

Receivables [Abstract]

Accounts Receivable and Allowance for Doubtful Accounts

Accounts Receivable and Allowance for Doubtful Accounts

Accounts receivable and the allowance for doubtful accounts are comprised of the following:

(in thousands)	June 30, 2020			December 31, 2019
Accounts receivable - trade	$	101,717		$	105,373
Allowance for doubtful accounts	(266		)	(306		)
Accounts receivable, net	$	101,451		$	105,067

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Contract Assets and Liabilities

6 Months Ended

Jun. 30, 2020

Revenue from Contract with Customer [Abstract]

Contract Assets and Liabilities

Contract Assets and Liabilities

The Company classifies contract assets and liabilities that may be settled beyond one year from the balance sheet date as current, consistent with the length of time of the Company’s project operating cycle.

Contract assets include amounts due under retainage provisions and costs and estimated earnings in excess of billings. The components of the contract asset balances as of the respective dates were as follows:

(in thousands)	June 30, 2020		December 31, 2019		Change
Contract assets
Costs in excess of billings and estimated earnings	$	39,898	$	44,315	$	(4,417	)
Retainage receivable	32,389		32,873		(484		)
Total contract assets	$	72,287	$	77,188	$	(4,901	)

Retainage receivable represents amounts invoiced to customers where payments have been partially withheld, typically 10%, pending the completion of certain milestones, satisfaction of other contractual conditions or the completion of the project. Retainage agreements vary from project to project and balances could be outstanding for several months or years depending on a number of circumstances such as contract-specific terms, project performance and other variables that may arise as the Company makes progress towards completion.

Contract assets represent the excess of contract costs and profits (or contract revenue) over the amount of contract billings to date and are classified as a current asset. Contract assets result when either: 1) the appropriate contract revenue amount has been recognized over time in accordance with ASC Topic 606, but a portion of the revenue recorded cannot be currently billed due to the billing terms defined in the contract, or 2) costs are incurred related to certain claims and unapproved change orders. Claims occur when there is a dispute regarding both a change in the scope of work and the price associated with that change. Unapproved change orders occur when a change in the scope of work results in additional work being performed before the parties have agreed on the corresponding change in the contract price. The Company routinely estimates recovery related to claims and unapproved change orders as a form of variable consideration at the most likely amount it expects to receive and to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is resolved. Claims and unapproved change orders are billable upon the agreement and resolution between the contractual parties and after the execution of contractual amendments. Increases in claims and unapproved change orders typically result from costs being incurred against existing or new positions; decreases normally result from resolutions and subsequent billings.

The current estimated net realizable value on such claims and unapproved change orders as recorded in contract assets and contract liabilities in the condensed consolidated balance sheets was $39.4 million and $38.4 million as of June 30, 2020 and December 31, 2019, respectively. The Company anticipates that the majority of such amounts will be approved or executed within one year. The resolution of these claims and unapproved change orders may require litigation or other forms of dispute resolution proceedings.

Contract liabilities include billings in excess of contract costs and provisions for losses. The components of the contract liability balances as of the respective dates were as follows:

(in thousands)	June 30, 2020		December 31, 2019		Change
Contract liabilities
Billings in excess of costs and estimated earnings	$	57,874	$	40,662	$	17,212
Provisions for losses	750		1,708		(958		)
Total contract liabilities	$	58,624	$	42,370	$	16,254

Billings in excess of costs represent the excess of contract billings to date over the amount of contract costs and profits (or contract revenue) recognized to date. The balance may fluctuate depending on the timing of contract billings and the recognition of contract revenue.

Provisions for losses are recognized in the condensed consolidated statements of operations at the uncompleted performance obligation level for the amount of total estimated losses in the period that evidence indicates that the estimated total cost of a performance obligation exceeds its estimated total revenue.

The net (overbilling) underbilling position for contracts in process consist of the following:

(in thousands)	June 30, 2020			December 31, 2019
Revenue earned on uncompleted contracts	$	755,456		$	726,215
Less: Billings to date	(773,432		)	(722,562		)
Net (overbilling) underbilling	$	(17,976	)	$	3,653
(in thousands)	June 30, 2020			December 31, 2019
Costs in excess of billings and estimated earnings	$	39,898		$	44,315
Billings in excess of costs and estimated earnings	(57,874		)	(40,662		)
Net (overbilling) underbilling	$	(17,976	)	$	3,653

We recorded revisions in our contract estimates for certain construction projects. For projects having revisions with a material gross profit impact, this resulted in gross profit write downs on four construction projects of $1.5 million for the three months ended June 30, 2020, two of which were within the Southern California region for a total of $0.7 million. No material project revisions resulting in gross profit write ups were recorded for the three months ended June 30, 2020.

For the six months ended June 30, 2020, we recorded revisions in our contract estimates for certain construction projects. We recorded gross profit write downs on eight construction projects and two gross profit write ups on construction projects for the six months ended June 30, 2020, each of which had a material gross profit impact, for an aggregate revision of $5.2 million and $1.2 million, respectively.

For the three months ended June 30, 2019, we recorded revisions in our contract estimates for certain construction and service projects. For individual projects with revisions having a material gross profit impact, this resulted in gross profit write ups totaling $0.3 million on one construction project and $0.3 million on one service project. We also recorded revisions in contract estimates that resulted in project write downs totaling $1.9 million on three construction projects for our Southern California region.

For the six months ended June 30, 2019, we recorded revisions in our contract estimates for certain construction and service projects. For individual projects with revisions having a material gross profit impact, this resulted in gross profit write ups totaling $3.0 million on six projects, including three projects totaling $1.0 million for our Mid-Atlantic region. One of these project write ups in the amount of $1.4 million resulted from our settlement of a significant Michigan project. We also recorded revisions in contract estimates that resulted in project write downs totaling $3.5 million on seven projects, including four projects totaling $2.2 million in our Southern California region and one project for $0.5 million in our Mid-Atlantic region. Revisions in our contract estimates on one service project resulted in a gross profit write up of $0.3 million on a Mid-Atlantic project during this period and one Southern California project resulted in a gross profit write down of $0.3 million.

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Goodwill and Intangibles

6 Months Ended

Jun. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangibles

Goodwill and Intangibles

Goodwill was $6.1 million at June 30, 2020 and December 31, 2019. The goodwill is associated with the Company's Service segment. Intangible assets are comprised of the following:

(in thousands)	Gross carrying amount		Accumulated amortization			Net intangible assets, excluding goodwill
June 30, 2020
Amortized intangible assets:
Customer Relationships – Service	$	4,710	$	(2,906	)	$	1,804
Favorable Leasehold Interests	530		(400		)	130
Total amortized intangible assets	5,240		(3,306		)	1,934
Unamortized intangible assets:
Trade Name	9,960		—			9,960
Total unamortized intangible assets	9,960		—			9,960
Total amortized and unamortized assets, excluding goodwill	$	15,200	$	(3,306	)	$	11,894

(in thousands)	Gross carrying amount		Accumulated amortization			Net intangible assets, excluding goodwill
December 31, 2019
Amortized intangible assets:
Customer Relationships – Service	$	4,710	$	(2,655	)	$	2,055
Favorable Leasehold Interests	530		(234		)	296
Total amortized intangible assets	5,240		(2,889		)	2,351
Unamortized intangible assets:
Trade Name	9,960		—			9,960
Total unamortized intangible assets	9,960		—			9,960
Total amortized and unamortized assets, excluding goodwill	$	15,200	$	(2,889	)	$	12,311

The definite-lived intangible assets are amortized over the period the Company expects to receive the related economic benefit, which for customer relationships is based upon estimated future net cash inflows. The Company has previously determined that its trade name has an indefinite useful life. The Limbach trade name has been in existence since the Company’s founding in 1901 and therefore is an established brand within the industry.

Total amortization expense for these amortizable intangible assets was $0.3 million and $0.4 million for the three and six months ended June 30, 2020 and $0.2 million and $0.4 million for the three and six months ended June 30, 2019.

The Company did not recognize any impairment charges on its goodwill or intangible assets for the three and six months ended June 30, 2020 or June 30, 2019.

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Debt

6 Months Ended

Jun. 30, 2020

Debt Disclosure [Abstract]

Debt

Debt

Long-term debt consists of the following obligations as of:

(in thousands)	June 30, 2020			December 31, 2019
2019 Refinancing Term Loan - term loan payable in quarterly installments of principal, (commencing in September 2020) plus interest through April 2022	$	41,000		$	41,000
Finance leases – collateralized by vehicles, payable in monthly installments of principal, plus interest ranging from 4.85% to 6.45% through 2025	6,285			6,585
Total debt	47,285			47,585
Less - Current portion of long-term debt	(6,414		)	(4,425		)
Less - Unamortized discount and debt issuance costs	(3,350		)	(4,292		)
Long-term debt	$	37,521		$	38,868

Credit Agreement

In 2016, Limbach Facility Services, LLC (“LFS”), a subsidiary of the Company, entered into the Credit Agreement (as amended, the “Credit Agreement”). The Credit Agreement consisted of a $25.0 million revolving line of credit (the “Credit Agreement revolver”) and a $24.0 million term loan (the “Credit Agreement term loan”), both with a maturity date of July 20, 2021. The Credit Agreement was collateralized by substantially all assets of LFS and its subsidiaries. Principal payments of $900,000 on the Credit Agreement term loan were due at the end of each quarter, beginning September 30, 2018, through maturity of the loan, with any remaining amounts due at maturity. Outstanding borrowings on both the Credit Agreement term loan and the Credit Agreement revolver bore interest at either the Base Rate (as defined in the Credit Agreement) or LIBOR (as defined in the Credit Agreement), plus the applicable additional margin, payable monthly. Mandatory prepayments were required upon the occurrence of certain events, including, among other things and subject to certain exceptions, equity issuances, changes of control of the Company, certain debt issuances, assets sales and excess cash flow.

The Credit Agreement included restrictions on, among other things and subject to certain exceptions, the Company and its subsidiaries’ ability to incur additional indebtedness, pay dividends or make other distributions, redeem or purchase capital stock, make investments and loans and enter into certain transactions, including selling assets, engaging in mergers or acquisitions and entering into transactions with affiliates. Loans under the Credit Agreement bore interest, at the borrower's option, at either Adjusted LIBOR (“Eurodollar”) or a Base Rate, in each case, plus an applicable margin. The applicable margin with respect to any Base Rate loan was 5.00% per annum and with respect to a Eurodollar loan was 6.00% per annum.

The borrower was required to make principal payments on the Bridge Term Loan in the amount of $250,000 on the last business day of March, June, September and December of each year. The Bridge Term Loan had a maturity date of April 12, 2019. The Bridge Term Loan was guaranteed by the same guarantors (including Limbach Holdings, Inc., Limbach Facility Services LLC, Limbach Holdings LLC, Limbach Company LLC, Limbach Company LP, Harper Limbach LLC and Harper Limbach Construction LLC) and secured (on a pari passu basis) by the same collateral as the other loans under the Credit Agreement.

The equity interests of the Company’s subsidiaries were pledged as security for the obligations under the Credit Agreement. The Credit Agreement included customary events of default, including, among other items, payment defaults, cross-defaults to other indebtedness, a change of control default and events of default with respect to certain material agreements. Additionally, with respect to the Company, an event of default would have been deemed to have occurred if the Company’s securities ceased to be registered with the SEC pursuant to Section 12(b) of the Exchange Act. In case of an event of default, the administrative agent would have been entitled to, among other things, accelerated payment of amounts due under the Credit Agreement, foreclose on the equity of the Company’s subsidiaries, and exercise all rights of a secured creditor on behalf of the lenders.

The additional margin applied to both the Credit Agreement revolver and Credit Agreement term loan were determined based on levels achieved under the Company’s senior leverage ratio covenant, which reflects the ratio of indebtedness divided by EBITDA for the most recently ended four quarters.

The following is a summary of the additional margin and commitment fees payable on the available revolving credit commitment:

Level	Senior Leverage Ratio	Additional Margin for Base Rate loans		Additional Margin for Libor Rate loans		Commitment Fee
I	Greater than or equal to 2.50 to 1.00	3.00	%	4.00	%	0.50	%
II	Less than 2.50 to 1.00, but greater than or equal to 2.00 to 1.00	2.75	%	3.75	%	0.50	%
III	Less than 2.00 to 1.00, but greater than or equal to 1.50 to 1.00	2.50	%	3.50	%	0.50	%
IV	Less than 1.50 to 1.00	2.25	%	3.25	%	0.50	%

2019 Refinancing Agreement

On April 12, 2019 (the “Refinancing Closing Date”), LFS entered into a financing agreement (the “2019 Refinancing Agreement”) with the lenders thereto and Cortland Capital Market Services LLC, as collateral agent and administrative agent and CB Agent Services LLC, as origination agent (“CB”). The 2019 Refinancing Agreement consists of (i) a $40.0 million term loan (the “2019 Refinancing Term Loan”) and (ii) a new $25.0 million multi-draw delayed draw term loan (the “2019 Delayed Draw Term Loan” and, collectively with the 2019 Refinancing Term Loan, the “2019 Term Loans”). Proceeds from the 2019 Refinancing Term Loan were used to repay the then existing Credit Agreement, to pay related fees and expenses thereof and to fund working capital of the Borrowers (defined below). Management intends for proceeds of the 2019 Delayed Draw Term Loan to be used to fund permitted acquisitions under the 2019 Refinancing Agreement and related fees and expenses in connection therewith.

LFS, a wholly-owned subsidiary of the Company, and each of its subsidiaries are borrowers (the “Borrowers”) under the 2019 Refinancing Agreement. In addition, the 2019 Refinancing Agreement is guaranteed by the Company and LHLLC (each, a “Guarantor”, and together with the Borrowers, the “Loan Parties”).

The 2019 Refinancing Agreement is secured by a first-priority lien on the real property of the Loan Parties and a second-priority lien on substantially all other assets of the Loan Parties, behind the 2019 ABL Credit Agreement (as defined below). The respective lien priorities of the 2019 Refinancing Agreement and the 2019 ABL Credit Agreement are governed by an intercreditor agreement.

2019 Refinancing Agreement - Interest Rates and Fees

The interest rate on borrowings under the 2019 Refinancing Agreement is, at the Borrowers’ option, either LIBOR (with a 2.00% floor) plus 11.00% or a base rate (with a 3.00% minimum) plus 10.00%. At June 30, 2020, the interest rate in effect on the 2019 Refinancing Term Loan was 13.00%.

2019 Refinancing Agreement - Other Terms and Conditions

The 2019 Refinancing Agreement matures on April 12, 2022, subject to certain adjustment. Required amortization is $1.0 million per quarter commencing with the fiscal quarter ending September 30, 2020. There is an unused line fee of 2.0% per annum on the undrawn portion of the 2019 Delayed Draw Term Loan, and there is a make-whole premium on prepayments made prior to the 19-month anniversary of the Refinancing Closing Date. This make-whole provision guarantees that the Company will pay no less than 18 months’ applicable interest to the lenders under the 2019 Refinancing Agreement. The 2019 Refinancing Agreement contains representations and warranties, and covenants which are customary for debt facilities of this type. Unless the Required Lenders (as defined in the 2019 Refinancing Agreement) otherwise consent in writing, the covenants limit the ability of the Company and its restricted subsidiaries to, among other things, (i) incur additional indebtedness or issue preferred stock, (ii) pay dividends or make distributions to the Company’s stockholders, (iii) purchase or redeem the Company’s equity interests, (iv) make investments, (v) create liens on their assets, (vi) enter into transactions with the Company’s affiliates, (vii) sell assets and (viii) merge or consolidate with, or dispose of substantially all of the Company’s assets to, other companies.

In addition, the 2019 Refinancing Agreement includes customary events of default and other provisions that could require all amounts due thereunder to become immediately due and payable, either automatically or at the option of the lenders, if the Company fails to comply with the terms of the 2019 Refinancing Agreement or if other customary events occur.

Furthermore, the 2019 Refinancing Agreement also contains two financial maintenance covenants for the 2019 Refinancing Term Loan, including a requirement to have sufficient collateral coverage of the aggregate outstanding principal amount of the 2019 Refinancing Term Loans and as of the last day of each month for the total leverage ratio of the Company and its Subsidiaries (the “Total Leverage Ratio ”) not to exceed an amount beginning at 4.25 to 1.00 through June 30, 2019, and stepping down to 2.00 to 1.00 effective July 1, 2021. From July 1, 2019 through September 30, 2019, the Total Leverage Ratio may not exceed 4.00 to 1.00. As of August 31, 2019, the Company’s Total Leverage Ratio for the preceding twelve consecutive fiscal month period was 4.61 to 1.00, which did not meet the requirement for such ratio not to exceed 4.00 to 1.00. As of September 30, 2019, the Company’s Total Leverage Ratio for the preceding twelve consecutive fiscal month period was 2.85 to 1.00, which was in compliance with the 4.00 to 1.00 requirement. The lender has waived the event of default arising from this noncompliance as of August 31, 2019, while reserving its rights with respect to covenant compliance in future months. In addition, the parties to the 2019 Refinancing Agreement entered into an amendment which, among other changes, revises the maximum permitted Total Leverage Ratio, starting at 3.30 to 1.00 on October 1, 2019 with a peak ratio of 4.25 during March 2020 along with varying monthly rates culminating in the lowest Total Leverage Ratio of 2.00 to 1.00 on April 1, 2021 through the term of such agreement. The 2019 Refinancing Agreement contains a post-closing covenant requiring the remediation of the Company’s material weakness, as described in Item 9A of its 2018 Annual Report on Form 10-K, no later than December 31, 2020 and to provide updates as to the progress of such remediation, provided that, if such remediation has not been completed on or prior to December 31, 2019, (x) the Company shall be required to pay the post-closing fee pursuant to the terms of the Origination Agent Fee Letter (as defined in the 2019 Refinancing Agreement) and (y) the applicable margin shall be increased by 1.00% per annum for the period from January 1, 2020 until the date at which the material weakness is no longer disclosed or required to be disclosed in the Company’s SEC filings or audited financial statements of the Company or related auditor’s reports. As of December 31, 2019, the Company fully remediated its material weakness and the Company removed from its SEC filings disclosure of such material weakness.

In connection with the 2019 Refinancing Amendment Number One and Waiver, dated November 14, 2019, the parties amended certain provisions of the 2019 Refinancing Agreement, including, among other changes to: (i) require, commencing October 1, 2019, a 3.00% increase in the interest rate on borrowings under the 2019 Refinancing Agreement; (ii) require the approval of CB and, generally, the lenders representing at least 50.1% of the aggregate undrawn term loan commitment or unpaid principal amount of the term loans, prior to effecting any permitted acquisition; (iii) revise the maximum permitted Total Leverage Ratio, starting at 3.30 to 1.00 on October 1, 2019 with a peak ratio of 4.25 during March 2020 along with varying monthly rates culminating in the lowest Total Leverage Ratio of 2.00 to 1.00 on April 1, 2021 and thereafter through the term of the 2019 Refinancing Agreement; and (iv) require the liquidity of the loan parties, which is generally calculated by adding (a) unrestricted cash on hand of the Loan Parties maintained in deposit accounts subject to control agreements granting control to the collateral agent for the 2019 ABL Credit Agreement, to (b) the difference between (1) the lesser of (x) $15 million, as adjusted from time to time, and (y) 75% of certain customer accounts resulting from the sale of goods or services in the ordinary course of business minus certain reserves established by the Administrative Agent and (2) the sum of (x) the outstanding principal balance of all revolving loans under the 2019 ABL Credit Agreement plus (y) the aggregate undrawn available amount of all letters of credit then outstanding plus the amount of any obligations that arise from any draw against any letter of credit that have not been reimbursed by the borrowers or funded with a revolving loan under the 2019 ABL Credit Agreement (the “Loan Parties Liquidity”), as of the last day of any fiscal month ending on or after November 30, 2019, of at least $10,000,000. As a condition to executing the 2019 Refinancing Amendment Number One and Waiver, the loan parties will be required to pay a non-refundable waiver fee of $400,000 and a non-refundable amendment fee of $1,000,000 (the “PIK First Amendment Fee”, which shall be paid in kind by adding the PIK First Amendment Fee to the outstanding principal amount of the term loan under the 2019 Refinancing Agreement as additional principal obligations thereunder on and as of the effective date 2019 Refinancing Amendment Number One and Waiver).

2019 Refinancing Agreement - CB Warrants

In connection with the 2019 Refinancing Agreement, on the Refinancing Closing Date, the Company issued to CB and the other lenders under the 2019 Refinancing Agreement warrants (the “CB Warrants”) to purchase up to a maximum of 263,314 shares of the Company's common stock at an exercise price of $7.63 per share subject to certain adjustments, including for stock dividends, stock splits or reclassifications. The actual number of shares of common stock into which the CB Warrants will be exercisable at any given time will be equal to: (i) the product of (x) the number of shares equal to 2% of the Company’s issued and outstanding shares of common stock on the Refinancing Closing Date on a fully diluted basis and (y) the percentage of the total 2019 Delayed Draw Term Loan made as of the exercise date, minus (ii) the number of shares previously issued under the CB Warrants. As of the Refinancing Closing Date through June 30, 2020, no amounts had been drawn on the 2019 Delayed Draw Term Loan, so no portion of the CB Warrants was exercisable. The CB Warrants may be exercised for cash or on a “cashless basis,” subject to certain adjustments, at any time after the Refinancing Closing Date until the expiration of such warrant at 5:00 p.m., New York time, on the earlier of (i) the five (5) year anniversary of the Refinancing Closing Date, or (ii) the liquidation of the Company. 

Accounting for the 2019 Term Loans and CB Warrants

The CB Warrants represent a freestanding financial instrument that is classified as a liability because the CB Warrants meet the definition of a derivative instrument that does not meet the equity scope exception (i.e., the CB Warrants are not indexed to the entity’s own equity). In addition, the material weakness penalty described above was evaluated as an embedded derivative liability and bifurcated from the 2019 Term Loans as it represents a non-credit related embedded feature that provides for net settlement. Both the CB Warrants liability and the embedded derivative liability are required to be initially and subsequently measured at fair value. The initial fair values of the CB Warrants liability and the embedded derivative liability approximated $0.9 million and $0.4 million, respectively, on the Refinancing Closing Date. The Company estimated these fair values by using the Black-Scholes-Merton option pricing model and a probability-weighted discounted cash flow approach.

The CB Warrants liability is included in other long-term liabilities. The Company remeasured the fair value of the CB Warrants liability as of June 30, 2020 and recorded any adjustments as other income (expense). At June 30, 2020 and December 31, 2019, the CB Warrants liability was $0.3 million and $0.4 million, respectively. For the three and six months ended June 30, 2020, respectively, the Company recorded other income of $0.1 million and other expenses of $0.1 million to reflect the change in fair value of the CB Warrants liability. For the three and six months ended June 30, 2019, the Company recorded other income of $0.1 million for both periods. At June 30, 2020 and December 31, 2019, the embedded derivative liability was $0.0 million as the Company remediated the material weakness associated with the embedded derivative as of December 31, 2019, and the $0.4 million embedded derivative liability was fully reversed and recorded as other income at that date.

The proceeds for the 2019 Term Loan were first allocated to the CB Warrants liability and embedded derivative liability based on their respective fair values with a corresponding amount of $1.3 million recorded as a debt discount to the 2019 Term Loans. In addition, the Company incurred approximately $2.5 million of debt issuance costs for the 2019 Term Loans that have also been recorded as a debt discount. The combined debt discount from the CB Warrants liability, embedded derivative liability and the debt issuance costs are being amortized into interest expense over the term of the 2019 Term Loans using the effective interest method. The Company recorded interest expense for the amortization of the CB Warrants liability and embedded derivative debt discounts of $0.1 million and $0.2 million for the three and six months ended June 30, 2020, respectively, and recorded an additional $0.4 million and $0.7 million of interest expense for the amortization of the debt issuance costs for the three and six months ended June 30, 2020, respectively. 

The Company recorded interest expense for the amortization of the CB Warrants liability and embedded derivative debt discounts of $0.1 million for the three and six months ended June 30, 2019 and recorded an additional $0.2 million of interest expense for the amortization of the debt issuance costs for the three and six months ended June 30, 2019, respectively. 

2019 ABL Credit Agreement

On the Refinancing Closing Date, LFS also entered into a financing agreement with the lenders thereto and Citizens Bank, N.A., as collateral agent, administrative agent and origination agent (the “2019 ABL Credit Agreement” and, together with the 2019 Refinancing Agreement, the “Refinancing Agreements”). The 2019 ABL Credit Agreement consists of a $15.0 million revolving credit facility (the “2019 Revolving Credit Facility”). Proceeds of the 2019 Revolving Credit Facility may be used for general corporate purposes. On the Refinancing Closing Date, the Company had nothing drawn on the ABL Credit Agreement and $14.0 million of available borrowing capacity thereunder (net of a $1.0 million reserve imposed by the lender).

The Borrowers and Guarantors under the 2019 ABL Credit Agreement are the same as under the 2019 Refinancing Agreement.

The 2019 ABL Credit Agreement is secured by a second-priority lien on the real property of the Loan Parties (behind the 2019 Refinancing Agreement) and a first-priority lien on substantially all other assets of the Loan Parties.

2019 ABL Credit Agreement - Interest Rates and Fees

The interest rate on borrowings under the 2019 ABL Credit Agreement is, at the Borrowers’ option, either LIBOR (with a 2.0% floor) plus an applicable margin ranging from 3.00% to 3.50% or a base rate (with a 3.0% minimum) plus an applicable margin ranging from 2.00% to 2.50%. At June 30, 2020 and June 30, 2019, the interest rates in effect on the 2019 ABL Credit Agreement were 5.25% and 7.50%, respectively.

2019 ABL Credit Agreement - Other Terms and Conditions

The 2019 ABL Credit Agreement matures on April 12, 2022. There is an unused line fee ranging from 0.250% to 0.375% per annum on undrawn amounts.

The 2019 ABL Credit Agreement contains representations and warranties, and covenants which are customary for debt facilities of this type. Unless the Required Lenders otherwise consent in writing, the covenants limit the ability of the Company and its restricted subsidiaries to, among other things, generally, to (i) incur additional indebtedness or issue preferred stock, (ii) pay dividends or make distributions to the Company’s stockholders, (iii) purchase or redeem the Company’s equity interests, (iv) make investments, (v) create liens on their assets, (vi) enter into transactions with the Company’s affiliates, (vii) sell assets other than in the ordinary course of business or another permitted disposition of assets and (viii) merge or consolidate with, or dispose of substantially all of the Company’s assets to, other companies.

The 2019 ABL Credit Agreement includes customary events of default and other provisions that could require all amounts due thereunder to become immediately due and payable, either automatically or at the option of the lenders, if the Company fails to comply with the terms of the 2019 ABL Credit Agreement or if other customary events occur.

The 2019 ABL Credit Agreement also contains a financial maintenance covenant for the 2019 Revolving Credit Facility, which is a requirement for the Total Leverage Ratio of the Company and its Subsidiaries not to exceed an amount beginning at 4.00 to 1.00 through September 30, 2019, and stepping down to 1.75 to 1.00 effective July 1, 2021. As of August 31, 2019, the Company’s Total Leverage Ratio for the preceding twelve consecutive fiscal month period was 4.61 to 1.00, which did not meet the requirement for such ratio not to exceed 4.00 to 1.00. As of September 30, 2019, the Company’s Total Leverage Ratio for the preceding twelve consecutive fiscal month period was 2.85 to 1.00, which was in compliance with the 4.00 to 1.00 requirement. The lender has waived the event of default arising from this noncompliance as of August 31, 2019, while reserving its rights with respect to covenant compliance in future months. In addition, the parties to the 2019 ABL Credit Agreement entered into an amendment which, among other changes revises the maximum permitted Total Leverage Ratio, starting at 3.30 to 1.00 on October 1, 2019 with a peak ratio of 4.25 during March 2020 along with varying monthly rates culminating in the lowest Total Leverage Ratio of 2.00 to 1.00 on April 1, 2021 through the term of such agreement.

In connection with the 2019 ABL Credit Amendment Number One and Waiver, the parties amended certain provisions of the 2019 ABL Credit Agreement, including, among other changes to (i) require the approval of the origination agent and, generally, the lenders representing at least 50.1% of the aggregate undrawn revolving loan commitment or unpaid principal amount of the term loans, prior to effecting any permitted acquisition; (ii) revise the maximum permitted Total Leverage Ratio, starting at 3.30 to 1.00 on October 1, 2019 with a peak ratio of 4.25 during March 2020 along with varying monthly rates culminating in the lowest Total Leverage Ratio of 2.00 to 1.00 on April 1, 2021 through the term of the 2019 ABL Credit Agreement; and (iii) require the Loan Parties Liquidity as of the last day of any fiscal month ending on or after November 30, 2019, of at least $10,000,000, as described above in the Amendment Number One to 2019 Refinancing Agreement and Waiver. As a condition to executing the 2019 ABL Credit Amendment Number One and Waiver, the loan parties was required to pay a non-refundable waiver fee of $7,500.

Accounting for the 2019 ABL Credit Agreement

As of June 30, 2020 and December 31, 2019, the Company had no amounts drawn on the 2019 ABL Credit Agreement. In addition, the Company incurred approximately $0.9 million of debt issuance costs for the 2019 ABL Credit Agreement that have been recorded as a non-current deferred asset. The deferred asset is being amortized into interest expense over the term of the 2019 Term ABL Credit Agreement using the effective interest method. The Company recorded interest expense of $0.1 million for the amortization the debt issuance costs for the three and six months ended June 30, 2020 and the three and six months ended June 30, 2019.

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Equity

6 Months Ended

Jun. 30, 2020

Stockholders' Equity Note [Abstract]

Equity

Equity

The Company’s second amended and restated certificate of incorporation currently authorizes the issuance of 100,000,000 shares of common stock, par value $0.0001, and 1,000,000 shares of preferred stock, par value $0.0001.

At June 30, 2020 and December 31, 2019, the Company had outstanding warrants exercisable for 4,576,799 shares of common stock, consisting of: (i) 4,600,000 warrants issued as part of units in its initial public offering, each of which is exercisable for one-half of one share of common stock at an exercise price of $11.50 per whole share (“Public Warrants”); (ii) 198,000 warrants, each exercisable for one-half of one share of common stock at an exercise price of $5.75 per half share ($11.50 per whole share) (“Sponsor Warrants”); (iii) 600,000 warrants, each exercisable for one share of common stock at an exercise price of $15.00 per share (“$15 Exercise Price Warrants”); (iv) 631,119 warrants, each exercisable for one share of common stock at an exercise price of $12.50 per share (“Merger Warrants”); and (v) 946,680 warrants, each exercisable for one share of common stock at an exercise price of $11.50 per share (“Additional Merger Warrants”). The Public Warrants, Sponsor Warrants and $15 Exercise Price Warrants were issued under a warrant agreement dated July 15, 2014, between Continental Stock Transfer & Trust Company, as warrant agent, and the Company. The Merger Warrants and Additional Merger Warrants were issued to the sellers of LHLLC.

On July 21, 2014, a total of 300,000 Unit Purchase Options (“UPOs”) were issued by 1347 Capital to a representative of the underwriter and its designees. The 17,100 UPOs that were outstanding at June 30, 2019 expired on July 21, 2019. Each UPO consisted of one share of common stock, one right to purchase one-tenth of one share of common stock and one warrant to purchase one-half of one share of common stock at an exercise price of $11.50 per full share, exercisable on a cash or cashless basis.

In 2020, the Compensation Committee of the Board of Directors of the Company granted 118,633 restricted stock units (“RSUs”) and 96,500 performance-based RSUs (“PRSUs”) under the Limbach Holdings, Inc. Omnibus Incentive Plan (as amended, the “Omnibus Incentive Plan”) to certain executive officers, non-executive employees and non-employee directors of the Company in the form of an annual ongoing long-term incentive RSU award (the “2020 Ongoing LTI RSU Award”), and an ongoing RSU award to non-employee directors (“2020 Ongoing Director RSU Award”). The 2020 Ongoing LTI RSU Award and 2020 Ongoing Director RSU Award only contains service-based awards.

On May 24, 2020 the Board of Directors approved further amendments to the Company's amended and restated Omnibus Incentive Plan to increase the number of shares of the Company's common stock that may be issued pursuant to awards by 500,000, for a total of 1,650,000 shares, and extend the term of the plan so that it will expire on the tenth anniversary of the date the stockholders approve the Amended Incentive Plan. The amendments were approved by the Company's stockholders at the Annual Meeting held on July 14, 2020.

See Note 17 - Management Incentive Plans for RSUs granted, vested, forfeited and remaining unvested and Note 18 - Subsequent Events.

Upon approval of the Company's stockholders on May 30, 2019, the Company adopted the Limbach Holdings, Inc. 2019 Employee Stock Purchase Plan (“the ESPP”). On January 1, 2020, the ESPP went into effect. The ESPP enables eligible employees, as defined by the ESPP, the right to purchase the Company's common stock through payroll deductions during consecutive subscription periods at a purchase price of 85% of the fair market value of a common share at the end of each offering period. Annual purchases by participants are limited to the number of whole shares that can be purchased by an amount equal to ten percent of the participant's compensation or $5,000, whichever is less. Each offering period of the ESPP lasts six months, commencing on January 1 and July 1 of each year.  The amounts collected from participants during a subscription period are used on the exercise date to purchase full shares of common stock.  Participants may withdraw from an offering before the exercise date and obtain a refund of amounts withheld through payroll deductions. Compensation cost, representing the 15% discount applied to the fair market value of common stock, is recognized on a straight-line basis over the six-month vesting period during which employees perform related services. Under the ESPP 500,000 shares are authorized to be issued. As of June 30, 2020, no shares have been issued under the ESPP.

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Fair Value Measurements

6 Months Ended

Jun. 30, 2020

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

The Company measures the fair value of financial assets and liabilities in accordance with ASC Topic 820 – Fair Value Measurements and Disclosures, which defines fair value, establishes a framework for measuring fair value and expands disclosures about fair value measurements. ASC Topic 820 establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value and requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to measurements involving significant unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are as follows:

• Level 1 — inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that are accessible at the measurement date;

• Level 2 — inputs other than quoted prices included in Level 1 that are observable for the asset or liability either directly or indirectly such as quoted prices in active markets for similar assets and liabilities, quoted prices for identical or similar assets or liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of assets or liabilities; and

• Level 3 — unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.

The Company believes that the carrying amounts of its financial instruments, including cash and cash equivalents, trade accounts receivable and accounts payable consist primarily of instruments without extended maturities, which approximate fair value primarily due to their short-term maturities and low risk of counterparty default. We also believe that the carrying value of the 2019 Refinancing Agreement term loan approximates its fair value due to the variable rate on such debt. As of June 30, 2020 and December 31, 2019, the Company determined that the fair value of its 2019 Refinancing Agreement term loan was $41.0 million at each date. Such fair value is determined using discounted estimated future cash flows using level 3 inputs.

In connection with the 2019 Refinancing Agreement, on the Refinancing Closing Date, the Company issued to CB and the other lenders under the CB Warrants to purchase up to a maximum of 263,314 shares of the Company's common stock at an exercise price of $7.63 per share subject to certain adjustments, including for stock dividends, stock splits or reclassifications (refer to Note 7 - Debt). The fair value of the Company’s warrant liability is recorded in the Company’s condensed consolidated financial statements and is determined using the Black-Scholes-Merton option pricing model. The valuation inputs include the quoted price of the Company’s common stock in an active market, volatility and expected life of the warrants, which are Level 3 inputs. Volatility is based on the actual market activity of the Company’s stock. The expected life is based on the remaining contractual term of the warrants and the risk-free interest rate is based on the implied yield available on U.S. Treasury Securities with a maturity equivalent to the warrants’ expected life.

The table below sets forth the assumptions used within the Black-Scholes-Merton option pricing model to value the Company's warrant liabilities as of June 30, 2020:

Stock price	$	3.70
Exercise price	$	7.63
Time until expiration (years)	3.79
Expected volatility	70.0		%
Risk-free interest rate	0.3		%
Expected dividend yield	—		%

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Earnings per Share

6 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

Earnings per Share

Earnings per Share

Diluted EPS assumes the dilutive effect of outstanding common stock warrants, UPOs and RSUs, all using the treasury stock method.

	Three months ended June 30,					Six months ended  June 30,
	2020		2019			2020		2019
(in thousands, except per share amounts)			(As Recast)					(As Recast)
EPS numerator:
Net income (loss)	$	2,947	$	(1,289	)	$	2,895	$	559
EPS denominator:
Weighted average shares outstanding – basic	7,846		7,643			7,822		7,643
Impact of dilutive securities	59		—			56		74
Weighted average shares outstanding – diluted	7,905		7,643			7,878		7,717
EPS:
Basic	$	0.38	$	(0.17	)	$	0.37	$	0.07
Diluted	$	0.37	$	(0.17	)	$	0.37	$	0.07

The following table summarizes the securities that were antidilutive or out-of-the-money, and therefore, were not included in the computations of diluted loss per common share:

	Three months ended June 30,		Six months ended June 30,
	2020	2019	2020	2019
Out-of-the money warrants (see Note 8)	4,576,799	4,576,799	4,576,799	4,576,799
Service-based RSUs (See Note 17)	463	138,782	1,255	2,867
Performance and market-based RSUs(1)	9,674	—	—	—
Out-of-the money UPOs (See Note 8)	—	27,360	—	27,360
Total	4,586,936	4,742,941	4,578,054	4,607,026

⁽¹⁾ For the three and six months ended June 30, 2020 and 2019, certain PRSUs and MRSUs (both as defined below) were not included in the computation of diluted loss per share because the performance and market conditions were not satisfied during the periods and would not be satisfied if the reporting date was at the end of the contingency periods.

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Income Taxes

6 Months Ended

Jun. 30, 2020

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The Company is taxed as a C corporation.

For interim periods, the provision for income taxes (including federal, state, local and foreign taxes) is calculated based on the estimated annual effective tax rate, adjusted for certain discrete items for the full fiscal year. Cumulative adjustments to the Company's estimate are recorded in the interim period in which a change in the estimated annual effective rate is determined. Each quarter we update our estimate of the annual effective tax rate, and if our estimated tax rate changes, we make a cumulative adjustment. The provision (benefit) for income taxes consist of the following:

No valuation allowance was required as of June 30, 2020 or December 31, 2019.

The Company has recorded a liability for unrecognized tax benefits of $0.5 million and $0.4 million as of June 30, 2020 and December 31, 2019, respectively, which were included in accrued expenses and other current liabilities. These unrecognized tax benefits are related to tax positions taken on its various income tax returns in open tax periods.

The effective tax rate for the three and six months ended June 30, 2020 was 27.4% and 14.1%, respectively, and the effective tax rate for the three and six months ended June 30, 2019 was (26.9%) and 31.8%, respectively. The difference in the effective rate for the six months ended June 30, 2020 as compared to the six months ended June 30, 2019 is primarily due to the CARES Act allowing the Company to carryback net operating losses (“NOLs”) generated in 2018 and 2019 (originally valued at a 21% federal tax rate) to prior years and generate a tax refund based on the higher 34% federal tax rate in those prior years.

On March 27, 2020, the CARES Act was signed into law making several changes to the Internal Revenue Code. The CARES Act, among other things, permits NOL carryovers to offset 100% of taxable income for tax years beginning before 2021. In addition, the CARES Act allows NOLs incurred in 2018, 2019 and 2020 to be carried back to each of the five preceding years to generate a $1.6 million refund of previously paid income taxes. The CARES Act contains modification on the limitation of business interest for tax years beginning in 2019 and 2020. The modifications to Section 163(j) increase the allowable business interest deduction from 30% of adjusted taxable income to 50% of adjusted taxable income. The CARES Act also accelerates the refund of AMT credits that were previously accumulated.

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Operating Segments

6 Months Ended

Jun. 30, 2020

Segment Reporting [Abstract]

Operating Segments

Operating Segments

The Company determined its operating segments on the same basis that it assesses performance and makes operating decisions. The Company manages and measures the performance of its business in two distinct operating segments: Construction and Service. These segments are reflective of how the Company’s Chief Operating Decision Maker (“CODM”) reviews operating results for the purposes of allocating resources and assessing performance. The Company's CODM is comprised of its Chief Executive Officer, Chief Financial Officer and Chief Operating Officer.

The accounting policies of the segments are the same as those described in the summary of significant accounting policies. The CODM evaluates performance based on income from operations of the respective segments after the allocation of Corporate office operating expenses. In accordance with ASC Topic 280 – Segment Reporting, the Company has elected to aggregate all of the construction branches into one Construction reportable segment and all of the service branches into one Service reportable segment. All transactions between segments are eliminated in consolidation. Our Corporate department provides general and administrative support services to our two operating segments. The CODM allocates costs between segments for selling, general and administrative expenses and depreciation expense.

All of the Company’s identifiable assets are located in the United States, which is where the Company is domiciled. The Company does not have sales outside the United States. The Company does not identify capital expenditures and total assets by segment in its internal financial reports due in part to the shared use of a centralized fleet of vehicles and specialized equipment. Interest expense is not allocated to segments because of the corporate management of debt service including interest.

Condensed consolidated segment information for the periods presented is as follows:

	Three months ended June 30,
	2020			2019
(in thousands)				(As Recast)
Statement of Operations Data:
Revenue:
Construction	$	105,937		$	104,759
Service	29,248			27,844
Total revenue	135,185			132,603
Gross profit:
Construction	12,213			10,683
Service	8,122			7,012
Total gross profit	20,335			17,695
Selling, general and administrative expenses:(1)
Construction	8,024			11,229
Service	5,588			5,335
Corporate	140			515
Total selling, general and administrative expenses	13,752			17,079
Amortization of intangibles	274			175
Operating income	$	6,309		$	441
Operating income for reportable segments	$	6,309		$	441
Less unallocated amounts:
Interest expense, net	(2,137		)	(1,597		)
Gain (loss) on sale of property and equipment	(13		)	9
Loss on debt extinguishment	—			(513		)
Gain on change in fair value of warrant liability	(102		)	(103		)
Total unallocated amounts	(2,252		)	(2,204		)
Total consolidated income (loss) before income taxes	$	4,057		$	(1,763	)
Other Data:
Depreciation and amortization:
Construction	$	1,032		$	1,003
Service	330			282
Corporate	274			175
Total other data	$	1,636		$	1,460

	Six months ended June 30,
	2020			2019
(in thousands)				(As Recast)
Statement of Operations Data:
Revenue:
Construction	$	215,423		$	209,219
Service	58,534			57,131
Total revenue	273,957			266,350
Gross profit:
Construction	23,195			23,599
Service	15,364			13,720
Total gross profit	38,559			37,319
Selling, general and administrative expenses:(1)
Construction	18,200			21,681
Service	11,917			10,561
Corporate	435			882
Total selling, general and administrative expenses	30,552			33,124
Amortization of intangibles	417			350
Operating income	$	7,590		$	3,845
Operating income for reportable segments	$	7,590		$	3,845
Less unallocated amounts:
Interest expense, net	(4,295		)	(2,430		)
Gain on sale of property and equipment	17			21
Loss on debt extinguishment	—			(513		)
Gain on change in fair value of warrant liability	59			(103		)
Total unallocated amounts	(4,219		)	(3,025		)
Total consolidated income (loss) before income taxes	$	3,371		$	820
Other Data:
Depreciation and amortization:
Construction	$	2,062		$	1,976
Service	661			547
Corporate	417			350
Total other data	$	3,140		$	2,873

(1) Starting January 1, 2020, we changed the methodology in which we present our corporate selling, general and administrative expenses to our CODM to better reflect the way the business is managed. Under this new methodology, all corporate expenses except for stock-based compensation are allocated to our Construction and Service segments. For comparability purposes, we reclassified our selling, general and administrative expense segment amounts for the three and six months ended June 30, 2019 to align with this updated allocation methodology.

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Leases

6 Months Ended

Jun. 30, 2020

Leases [Abstract]

Leases

Leases

The Company leases real estate, trucks and other equipment. The determination of whether an arrangement is, or contains, a lease is performed at the inception of the arrangement. Classification and initial measurement of the right-of-use asset and lease liability are determined at the lease commencement date. The Company elected the short-term lease measurement and recognition exemption; therefore, leases with an initial term of 12 months or less are not recorded on the condensed consolidated balance sheets.

The Company's arrangements include certain non-lease components such as common area and other maintenance for leased real estate, as well as mileage, fuel and maintenance costs related to leased vehicles. For all leased asset classes, the Company has elected to not separate non-lease components from lease components and will account for each separate lease component and non-lease component associated with the lease as a single lease component. The Company does not guarantee any residual value in its lease agreements, and there are no material restrictions or covenants imposed by lease arrangements. Real estate leases typically include one or more options to extend the lease. The Company regularly evaluates the renewal options, and when they are reasonably certain of exercise, the Company includes the renewal period in its lease term. For our leased vehicles, the Company uses the interest rate implicit in its leases with the lessor to discount lease payments at the lease commencement date. When the implicit rate is not readily available, as is the case with our real estate leases, the Company uses quoted borrowing rates on our secured debt.

The following table summarizes the lease amounts included in our condensed consolidated balance sheets:

(in thousands)	Classification on the Condensed Consolidated Balance Sheets	June 30, 2020		December 31, 2019
Assets
Operating	Operating lease right-of-use assets (a)	$	19,616	$	21,056
Finance	Property and equipment, net (b)	6,088		6,412
Total lease assets		$	25,704	$	27,468
Liabilities
Current
Operating	Current operating lease liabilities	$	3,681	$	3,750
Finance	Current portion of long-term debt	2,414		2,424
Noncurrent
Operating	Long-term lease liabilities	16,502		18,247
Finance	Long-term debt	3,871		4,161
Total lease liabilities		$	26,468	$	28,582

(a) Operating lease assets are recorded net of accumulated amortization of $9.9 million at June 30, 2020 and $8.5 million at December 31, 2019.

(b) Finance lease assets are recorded net of accumulated amortization of $4.9 million at June 30, 2020 and $4.7 million at December 31, 2019.

The following table summarizes the lease costs included in our condensed consolidated statements of operations for the three months ended:

		For the Three months ended June 30,				For the Six months ended June 30,
(in thousands)	Classification on the Condensed Consolidated Statement of Operations	2020		2019		2020		2019
Operating lease cost	Cost of revenue(a)	$	893	$	853	$	1,777	1,667
Operating lease cost	Selling, general and administrative expenses(a)	376		346		757		671
Finance lease cost
Amortization	Cost of revenue(b)	645		613		1,311		1,183
Interest	Interest expense, net(b)	86		79		179		154
Total lease cost		$	2,000	$	1,891	$	4,024	$	3,675

(a) Operating lease costs recorded in cost of sales includes $0.1 million and $0.2 million of variable lease costs for the three months ended June 30, 2020 and 2019, respectively. In addition, $0.1 million of variable lease costs are included in Selling, general and administrative expenses for both the three months ended June 30, 2020 and 2019. Operating lease costs recorded in cost of sales includes $0.4 million of variable lease costs for the six months ended June 30, 2020 and 2019. In addition, $0.1 million of variable lease costs are included in Selling, general and administrative expenses for the six months ended June 30, 2020 and 2019.

(b) Finance lease costs recorded in cost of revenue for the three months ended June 30, 2020 and 2019 includes $0.5 million and $0.7 million of variable leases costs. Finance lease costs recorded in cost of revenue for the six months ended June 30, 2020 and 2019 includes $1.2 million and $1.4 million of variable lease costs. These variable lease costs consist of fuel, maintenance, and sales tax charges. No variable lease costs for finance leases were recorded in selling, general and administrative expenses.

Future minimum commitments for finance and operating leases that have non-cancelable lease terms in excess of one year as of June 30, 2020 were as follows:

Year ending (in thousands):	Finance Leases			Operating Leases
Remainder of 2020	$	1,429		$	2,294
2021	2,426			4,565
2022	1,898			4,305
2023	902			3,303
2024	162			2,701
Thereafter	1			6,169
Total minimum lease payments	$	6,818		$	23,337
Amounts representing interest	(533		)
Present value of net minimum lease payments	$	6,285

The following is a summary of the lease terms and discount rates:

	June 30, 2020		December 31, 2019
Weighted average lease term (in years)
Operating	5.93		6.20
Finance	2.83		2.96
Weighted average discount rate
Operating	4.81	%	4.80	%
Finance	5.64	%	5.69	%

The following is a summary of other information and supplemental cash flow information related to finance and operating leases for the six months ended:

(in thousands)	June 30, 2020			June 30, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	2,910		$	2,273
Operating cash flows from finance leases	179			154
Financing cash flows from finance leases	1,285			1,140
Right-of-use assets exchanged for lease liabilities:
Operating leases	$	—		$	3,022
Finance leases	1,050			1,630
Right-of-use assets disposed or adjusted modifying operating leases liabilities	$	586		$	1,651
Right-of-use assets disposed or adjusted modifying finance leases liabilities	$	(64	)	$	—

Leases

Leases

The Company leases real estate, trucks and other equipment. The determination of whether an arrangement is, or contains, a lease is performed at the inception of the arrangement. Classification and initial measurement of the right-of-use asset and lease liability are determined at the lease commencement date. The Company elected the short-term lease measurement and recognition exemption; therefore, leases with an initial term of 12 months or less are not recorded on the condensed consolidated balance sheets.

The Company's arrangements include certain non-lease components such as common area and other maintenance for leased real estate, as well as mileage, fuel and maintenance costs related to leased vehicles. For all leased asset classes, the Company has elected to not separate non-lease components from lease components and will account for each separate lease component and non-lease component associated with the lease as a single lease component. The Company does not guarantee any residual value in its lease agreements, and there are no material restrictions or covenants imposed by lease arrangements. Real estate leases typically include one or more options to extend the lease. The Company regularly evaluates the renewal options, and when they are reasonably certain of exercise, the Company includes the renewal period in its lease term. For our leased vehicles, the Company uses the interest rate implicit in its leases with the lessor to discount lease payments at the lease commencement date. When the implicit rate is not readily available, as is the case with our real estate leases, the Company uses quoted borrowing rates on our secured debt.

The following table summarizes the lease amounts included in our condensed consolidated balance sheets:

(in thousands)	Classification on the Condensed Consolidated Balance Sheets	June 30, 2020		December 31, 2019
Assets
Operating	Operating lease right-of-use assets (a)	$	19,616	$	21,056
Finance	Property and equipment, net (b)	6,088		6,412
Total lease assets		$	25,704	$	27,468
Liabilities
Current
Operating	Current operating lease liabilities	$	3,681	$	3,750
Finance	Current portion of long-term debt	2,414		2,424
Noncurrent
Operating	Long-term lease liabilities	16,502		18,247
Finance	Long-term debt	3,871		4,161
Total lease liabilities		$	26,468	$	28,582

(a) Operating lease assets are recorded net of accumulated amortization of $9.9 million at June 30, 2020 and $8.5 million at December 31, 2019.

(b) Finance lease assets are recorded net of accumulated amortization of $4.9 million at June 30, 2020 and $4.7 million at December 31, 2019.

The following table summarizes the lease costs included in our condensed consolidated statements of operations for the three months ended:

		For the Three months ended June 30,				For the Six months ended June 30,
(in thousands)	Classification on the Condensed Consolidated Statement of Operations	2020		2019		2020		2019
Operating lease cost	Cost of revenue(a)	$	893	$	853	$	1,777	1,667
Operating lease cost	Selling, general and administrative expenses(a)	376		346		757		671
Finance lease cost
Amortization	Cost of revenue(b)	645		613		1,311		1,183
Interest	Interest expense, net(b)	86		79		179		154
Total lease cost		$	2,000	$	1,891	$	4,024	$	3,675

(a) Operating lease costs recorded in cost of sales includes $0.1 million and $0.2 million of variable lease costs for the three months ended June 30, 2020 and 2019, respectively. In addition, $0.1 million of variable lease costs are included in Selling, general and administrative expenses for both the three months ended June 30, 2020 and 2019. Operating lease costs recorded in cost of sales includes $0.4 million of variable lease costs for the six months ended June 30, 2020 and 2019. In addition, $0.1 million of variable lease costs are included in Selling, general and administrative expenses for the six months ended June 30, 2020 and 2019.

(b) Finance lease costs recorded in cost of revenue for the three months ended June 30, 2020 and 2019 includes $0.5 million and $0.7 million of variable leases costs. Finance lease costs recorded in cost of revenue for the six months ended June 30, 2020 and 2019 includes $1.2 million and $1.4 million of variable lease costs. These variable lease costs consist of fuel, maintenance, and sales tax charges. No variable lease costs for finance leases were recorded in selling, general and administrative expenses.

Future minimum commitments for finance and operating leases that have non-cancelable lease terms in excess of one year as of June 30, 2020 were as follows:

Year ending (in thousands):	Finance Leases			Operating Leases
Remainder of 2020	$	1,429		$	2,294
2021	2,426			4,565
2022	1,898			4,305
2023	902			3,303
2024	162			2,701
Thereafter	1			6,169
Total minimum lease payments	$	6,818		$	23,337
Amounts representing interest	(533		)
Present value of net minimum lease payments	$	6,285

The following is a summary of the lease terms and discount rates:

	June 30, 2020		December 31, 2019
Weighted average lease term (in years)
Operating	5.93		6.20
Finance	2.83		2.96
Weighted average discount rate
Operating	4.81	%	4.80	%
Finance	5.64	%	5.69	%

The following is a summary of other information and supplemental cash flow information related to finance and operating leases for the six months ended:

(in thousands)	June 30, 2020			June 30, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	2,910		$	2,273
Operating cash flows from finance leases	179			154
Financing cash flows from finance leases	1,285			1,140
Right-of-use assets exchanged for lease liabilities:
Operating leases	$	—		$	3,022
Finance leases	1,050			1,630
Right-of-use assets disposed or adjusted modifying operating leases liabilities	$	586		$	1,651
Right-of-use assets disposed or adjusted modifying finance leases liabilities	$	(64	)	$	—

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Self-Insurance

6 Months Ended

Jun. 30, 2020

Insurance [Abstract]

Self-Insurance

Self-Insurance

The Company purchases workers’ compensation and general liability insurance under policies with per-incident deductibles of $250 thousand and a $4.6 million maximum aggregate deductible loss limit per year.

The components of the self-insurance liability as of June 30, 2020 and December 31, 2019 are as follows:

(in thousands)	As of June 30, 2020		As of December 31, 2019
Current liability — workers’ compensation and general liability	$	514	$	703
Current liability — medical and dental	511		821
Non-current liability	452		382
Total liability shown in Accrued expenses and other current liabilities	$	1,477	$	1,906
Restricted cash	$	113	$	113

The restricted cash balance represents an imprest cash balance set aside for the funding of workers' compensation and general liability insurance claims. This amount is replenished either when depleted or at the beginning of each month.

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2020

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Legal. The Company is continually engaged in administrative proceedings, arbitrations, and litigation with owners, general contractors, suppliers, and other unrelated parties, all arising in the ordinary courses of business. In the opinion of the Company’s management, the results of these actions will not have a material adverse effect on the financial position, results of operations, or cash flows of the Company.

LFS and Harper, wholly-owned subsidiaries of the Company, were parties to a lawsuit involving a Harper employee who was alleged to be in the course and scope of his employment at the time the personal car he was operating collided with another car causing injuries to three persons and one fatality. On or about October 12, 2018, the plaintiffs agreed to settle and dismiss the lawsuit in exchange for an aggregate payment of $30.0 million from LFS and Harper, which amounts were paid entirely by the Company’s insurance carriers. The Company will not have any monetary exposure. The $30.0 million amounts due from the Company’s insurance carriers and due to the plaintiffs were included in the captions labeled as other current assets and accrued expenses and other current liabilities, respectively, in the consolidated balance sheet as of December 31, 2018 and were paid in February 2019.

On November 13, 2019, claimant, Lanzo Trenchless Technologies, Inc. - North, filed a Demand for Arbitration in the state of Michigan against our wholly-owned subsidiary, Limbach Company LLC.  The demand seeks damages in excess of $0.4 million based upon the allegation that Limbach breached a construction contract by improperly terminating Lanzo’s subcontract, and for withholding payment from Lanzo based upon deficient performance.  Limbach has asserted a counterclaim seeking damages caused by Lanzo’s deficient performance.  A binding arbitration proceeding is anticipated later in 2020.

On January 23, 2020, plaintiff, Bernards Bros. Inc., filed a complaint against Limbach Holdings, Inc. in Superior Court of the State of California for the County of Los Angeles against Limbach Holdings, Inc.  The complaint alleges that our Southern California operations refused to honor a proposal made to Bernards to act as a subcontractor on a construction project, and that, as a result of the wrongful failure to honor the proposal, Bernards suffered damages in excess of $3.0 million, including alleged increased costs for hiring a different subcontractor to perform the work.  The Company intends to vigorously defend the suit.  The schedule of these proceedings has been delayed due to COVID-19 related court-closings, such that a date for trial is currently uncertain.

On April 17, 2020, plaintiff, LA Excavating, Inc., filed a complaint against our wholly-owned subsidiary, Limbach Company LP, and several other parties, in Superior Court of the State of California, for the County of Los Angeles. The complaint seeks damages of approximately $1.0 million for alleged failure to pay contract balances and extra work ordered by Limbach, as well as seeks to enforce payment obligations under payment and stop notice release bonds. The Company disputes the allegations and intends to vigorously defend the suit. The schedule of these proceedings has been delayed due to COVID-19 related court-closings, such that a date for trial is currently uncertain.

Surety. The terms of our construction contracts frequently require that we obtain from surety companies, and provide to our customers, payment and performance bonds (“Surety Bonds”) as a condition to the award of such contracts. The Surety Bonds secure our payment and performance obligations under such contracts, and we have agreed to indemnify the surety companies for amounts, if any, paid by them in respect of Surety Bonds issued on our behalf. In addition, at the request of labor unions representing certain of our employees, Surety Bonds are sometimes provided to secure obligations for wages and benefits payable to or for such employees. Public sector contracts require Surety Bonds more frequently than private sector contracts, and accordingly, our bonding requirements typically increase as the amount of public sector work increases. As of June 30, 2020, the Company had approximately $128.6 million in surety bonds outstanding. The Surety Bonds are issued by surety companies in return for premiums, which vary depending on the size and type of bond.

Collective Bargaining Agreements. Many of the Company’s craft labor employees are covered by collective bargaining agreements. The agreements require the Company to pay specified wages, provide certain benefits and contribute certain amounts to multi-employer pension plans. If the Company withdraws from any of the multi-employer pension plans or if the plans were to otherwise become underfunded, the Company could incur additional liabilities related to these plans. Although the Company has been informed that some of the multi-employer pension plans to which it contributes have been classified as “critical” status, the Company is not currently aware of any significant liabilities related to this issue.

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Remaining Performance Obligations

6 Months Ended

Jun. 30, 2020

Revenue from Contract with Customer [Abstract]

Remaining Performance Obligations

Remaining Performance Obligations

Remaining performance obligations represent the transaction price of firm orders for which work has not been performed and exclude unexercised contract options. The Company’s remaining performance obligations includes projects that have a written award, a letter of intent, a notice to proceed or an agreed upon work order to perform work on mutually accepted terms and conditions.

As of June 30, 2020, the aggregate amount of the transaction prices allocated to the remaining performance obligations of the Company's Construction and Service segment contracts were $408.8 million and $46.6 million, respectively. As of December 31, 2019, the aggregate amount of the transaction prices allocated to the remaining performance obligations of the Company's Construction and Service segment contracts were $504.2 million and $41.9 million, respectively.

We estimate that 56% and 100% of our Construction and Service segment remaining performance obligations as of June 30, 2020, respectively, will be recognized as revenue during 2020, with the substantial majority of remaining performance obligations to be recognized within 24 months, although the timing of the Company's performance is not always under its control.

Additionally, the difference between remaining performance obligations and backlog is due to the exclusion of a portion of the Company’s service agreements under certain contract types from the Company’s remaining performance obligations as these contracts can be canceled for convenience at any time by the Company or the customer without considerable cost incurred by the customer. Additional information related to backlog is provided in “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations” of this Quarterly Report on Form 10-Q.

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Management Incentive Plans

6 Months Ended

Jun. 30, 2020

Share-based Payment Arrangement [Abstract]

Management Incentive Plans

Management Incentive Plans

The Company initially adopted the Omnibus Incentive Plan on July 20, 2016 for the purpose of: (a) encouraging the profitability and growth of the Company through short-term and long-term incentives that are consistent with the Company’s objectives; (b) giving participants an incentive for excellence in individual performance; (c) promoting teamwork among participants; and (d) giving the Company a significant advantage in attracting and retaining key employees, directors and consultants. To accomplish such purposes, the Omnibus Incentive Plan provides that the Company may grant options, stock appreciation rights, restricted shares, restricted stock units, performance-based awards (including performance-based restricted shares and restricted stock units), other share based awards, other cash-based awards or any combination of the foregoing.

Following the further amendment and restatement of the Omnibus Incentive Plan upon approval of the Company's stockholders on July 14, 2020, the Company has reserved a total of 1,650,000 shares of its common stock for issuance under the Omnibus Incentive Plan. The number of shares issued or reserved pursuant to the Omnibus Incentive Plan will be adjusted by the plan administrator, as they deem appropriate and equitable, as a result of stock splits, stock dividends, and similar changes in the Company’s common stock. In connection with the grant of an award, the plan administrator may provide for the treatment of such award in the event of a change in control. All awards are made in the form of shares only. See Note 18 - Subsequent Events.

Service-Based Awards

During the first six months of 2020, the Company granted 118,633 service-based RSUs to its executives, certain employees, and non-employee directors under the Omnibus Incentive Plan.

The following table summarizes our service-based RSU activity for the six months ended June 30, 2020:

	Awards		Weighted-Average Grant Date Fair Value
Unvested at December 31, 2019	328,575		$	7.83
Granted	118,633		3.48
Vested	(167,085	)	8.95
Forfeited	(10,109	)	6.80
Unvested at June 30, 2020	270,014		$	5.34

Performance-Based Awards

During the first six months of 2020, the Company granted 96,500 performance-based RSUs (“PRSUs”) to its executives and certain employees under the Omnibus Incentive Plan. The Company will recognize stock-based compensation expense for these awards over the vesting period based on the projected probability of achievement of certain performance conditions as of the end of each reporting period during the performance period and may periodically adjust the recognition of such expense, as necessary, in response to any changes in the Company’s forecasts with respect to the performance conditions. For the three and six months ended June 30, 2020, the Company recognized $0.1 million of stock-based compensation expense related to outstanding PRSUs. For the three and six months ended June 30, 2019, the Company did not recognize any stock-based compensation expense related to any outstanding PRSUs.

The following table summarizes our PRSU activity for the six months ended June 30, 2020:

	Awards		Weighted-Average Grant Date Fair Value
Unvested at December 31, 2019	62,307		$	12.62
Granted	96,500		3.67
Vested	—		—
Forfeited	(13,250	)	11.31
Unvested at June 30, 2020	145,557		$	6.80

Market-Based Awards

The following table summarizes our market-based RSU (“MRSUs”) activity for the six months ended June 30, 2020:

	Awards		Weighted-Average Grant Date Fair Value
Unvested at December 31, 2019	125,000		$	6.58
Granted	—		—
Vested	—		—
Forfeited	(22,500	)	6.58
Unvested at June 30, 2020	102,500		$	6.58

Total recognized stock-based compensation expense amounted to $0.1 million and $0.4 million for the three and six months ended June 30, 2020, respectively, and $0.5 million and $0.9 million for the three and six months ended June 30, 2019, respectively. The aggregate fair value as of the vest date of RSUs that vested during the six months ended June 30, 2020 and 2019 was $0.6 million and $0.2 million, respectively. Total unrecognized stock-based compensation expense related to unvested RSUs which are probable of vesting was $0.6 million at June 30, 2020. These costs are expected to be recognized over a weighted average period of 1.28 years.

Upon approval of the Company's stockholders on May 30, 2019, the Company adopted the Limbach Holdings, Inc. 2019 Employee Stock Purchase Plan (“the ESPP”). On January 1, 2020, the ESPP went into effect. The ESPP enables eligible employees, as defined by the ESPP, the right to purchase the Company's common stock through payroll deductions during consecutive subscription periods at a purchase price of 85% of the fair market value of a common share at the end of each offering period. Annual purchases by participants are limited to the number of whole shares that can be purchased by an amount equal to ten percent of the participant's compensation or $5,000, whichever is less. Each offering period of the ESPP lasts six months, commencing on January 1st and July 1st of each year.  The amounts collected from participants during a subscription period are used on the exercise date to purchase full shares of common stock.  Participants may withdraw from an offering before the exercise date and obtain a refund of amounts withheld through payroll deductions. Compensation cost, representing the 15% discount applied to the fair market value of common stock, is recognized on a straight-line basis over the six-month vesting period during which employees perform related services. Under the ESPP 500,000 shares are authorized to be issued. As of June 30, 2020, no shares have been issued under the ESPP. See Note 18 - Subsequent Events.

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Subsequent Events

6 Months Ended

Jun. 30, 2020

Subsequent Events [Abstract]

Subsequent Events

Subsequent Events

At the 2020 Annual Meeting, held on July 14, 2020, the stockholders approved the further amendments to the Company's amended and restated Omnibus Incentive Plan to increase the number of shares of the Company's common stock that may be issued pursuant to awards by 500,000, for a total of 1,650,000 shares, and extend the term of the plan so that it will expire on the tenth anniversary of the date the stockholders approve the Amended Incentive Plan.

In July 2020, we issued 30,825 shares of our common stock to participants in the ESPP who contributed to the plan through June 30, 2020. Stock compensation expense related to the ESPP was $17 thousand for the three and six months ended June 30, 2020.

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Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2020

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

Condensed Consolidated Financial Statements

The accompanying unaudited Condensed Consolidated Financial Statements have been prepared in accordance with instructions to the Quarterly Report on Form 10-Q and Rule 8-03 of Regulation S-X for smaller reporting companies. Consequently, certain information and note disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”) have been condensed or omitted pursuant to those rules and regulations, although the Company believes that the disclosures made are adequate to make the information not misleading. Readers of this report should refer to the consolidated financial statements and the notes thereto included in our most recent Annual Report on Form 10-K filed with the Securities and Exchange Commission (the “SEC”) on May 12, 2020. 

Unaudited Interim Financial Information

Unaudited Interim Financial Information

The accompanying interim Condensed Consolidated Balance Sheets, Condensed Consolidated Statements of Operations, Condensed Consolidated Statements of Stockholders’ Equity and Condensed Consolidated Statements of Cash Flows for the periods presented are unaudited. Also, within the notes to the Condensed Consolidated Financial Statements, we have included unaudited information for these interim periods. These unaudited interim Condensed Consolidated Financial Statements have been prepared in accordance with GAAP. In our opinion, the accompanying unaudited Condensed Consolidated Financial Statements contain all normal and recurring adjustments necessary for a fair statement of the Company’s financial position as of June 30, 2020, and its results of operations and its cash flows for the six months ended June 30, 2020. The results for the six months ended June 30, 2020 are not necessarily indicative of the results to be expected for the year ending December 31, 2020.

The Condensed Consolidated Balance Sheet as of December 31, 2019 was derived from our audited financial statements included in our Annual Report on Form 10-K filed with the SEC on May 12, 2020, but is presented as condensed and does not contain all of the footnote disclosures from the annual financial statements.

Recently Adopted Accounting Standards

Recently Adopted Accounting Standards

New Revenue Recognition Standard

In May 2014, the FASB issued Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers (Topic 606), as amended by subsequent ASUs (collectively, “ASC Topic 606”) which amends the existing accounting standards for revenue recognition and establishes principles for recognizing revenue upon the transfer of promised goods or services to customers based on the expected consideration to be received in exchange for those goods or services. Effective December 31, 2019, management adopted ASC Topic 606 for the annual and quarterly periods beginning after January 1, 2019 using a modified retrospective transition approach. The financial information for the three and six months ended June 30, 2019 has been recast to conform to the new standard.

The adoption of ASC Topic 606 did not have an impact on revenue of our fixed-price and other service contracts. However, it did impact revenue of our construction-type contracts within our construction and service segments specifically in accounting for warranties. For many of our construction-type contracts, we previously included assurance-type warranties in total estimated project costs. Under ASC Topic 606, the estimated cost of satisfying assurance-type warranties is accrued in accordance with the guidance in ASC Topic 460, Guarantees. Upon adoption of ASC Topic 606, we removed estimated and actual warranty costs at the contract level and recognized a warranty liability and expense in direct proportion to the cost-to-cost method progress towards completion of the associated contract, which had a $0.6 million effect on our opening accumulated deficit balance at January 1, 2019.

The Company also offers service-type warranties on certain construction-type projects. These service-type warranties were not accounted for as a separate performance obligation prior to the adoption of ASC Topic 606. Upon adoption of ASC Topic 606, we allocated a portion of the contract's transaction price to the service-type warranty based on its estimated standalone selling price. The accounting for service-type warranties under ASC Topic 606 did not have a material impact on the condensed consolidated financial statements.

In addition, as of January 1, 2019, we began to separately present contract assets and liabilities on the consolidated balance sheets. Contract assets include amounts due under contractual retainage provisions that were previously included in accounts receivable as well as costs and estimated earnings in excess of billings on uncompleted contracts that were previously separately presented. Contract liabilities include billings in excess of costs and estimated earnings on uncompleted contracts that were previously separately presented and provisions for losses. See Note 5 - Contract Assets and Liabilities for further information.

The adoption of ASC Topic 606 had no impact on the cash flows provided by operating activities in the Company's condensed consolidated statements of cash flows.

Notes 2, 4, 5, and 16 include additional information relating to our adoption of ASC Topic 606. Note 12 includes information regarding our revenue disaggregated by segment.

Refer to the section, Effects of Adoption of ASC 606 and ASC 842 on Condensed Consolidated Financial Statements, below for additional disclosures around the quantitative impacts that the adoption of ASC Topic 606 had on our condensed consolidated financial statements.

New Leasing Standard

In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-02, Leases (Topic 842), as amended and supplemented by subsequent ASUs (collectively, “ASC Topic 842”). ASC Topic 842 amends the existing guidance in Accounting Standards Codification (“ASC”) 840, Leases. This ASU requires, among other things, the recognition of lease right-of-use (“ROU”) assets and lease liabilities by lessees for those leases currently classified as operating leases. Effective December 31, 2019, management adopted ASC Topic 606 for the annual and quarterly periods beginning after January 1, 2019 using a modified retrospective transition approach. The financial information for the quarter-ended June 30, 2019 has been recast to conform to the new standard.

The Company elected the package of practical expedients which provides relief from having to reassess (1) whether any expired or existing contracts contain leases, (2) lease classification (as operating or financing) for any expired or existing leases, and (3) initial direct costs for any existing leases. The Company also elected not to separate non-lease components from lease components and did not elect the hindsight practical expedient.

The adoption of ASC Topic 842 had no impact to the Company's condensed consolidated statements of operations or the consolidated cash flows provided by operating and financing activities in the Company's condensed consolidated statements of cash flows.

Refer to Note 13 - Leases for additional information regarding the impact of the adoption of ASC Topic 842 on the Company's financial position.

Additionally, refer to the section, Effects of Adoption of ASC 606 and ASC 842 on Condensed Consolidated Financial Statements, below for additional disclosures around the quantitative impacts that the adoption of ASC Topic 842 had on our condensed consolidated financial statements.

Effects of Adoption of ASC 606 and ASC 842 on Condensed Consolidated Financial Statements

The effect of the changes made to the Company's condensed consolidated June 30, 2019 balance sheet and condensed consolidated statement of operations for the three and six month periods ended June 30, 2019 for the adoption of ASC Topic 606 and ASC Topic 842 were as follows:

CONDENSED CONSOLIDATED BALANCE SHEET
(Unaudited)
(in thousands)	Previously Reported Balance as of June 30, 2019(a)		Adjustments due to ASC Topic 606		Adjustments due to ASC Topic 842		Balance as of June 30, 2019 (As Recast)
Assets
Accounts receivable, net (b)	142,761		(31,236	)	—		111,525
Contract assets	—		68,285		—		68,285
Costs and estimated earnings in excess of billings on uncompleted contracts	36,030		(36,030	)	—		—
Other current assets	4,637		1		—		4,638
Operating lease right-of-use assets (c)	—		—		22,685		22,685
Deferred tax asset	4,170		(207	)	—		3,963
Liabilities
Contract liabilities	—		44,131		—		44,131
Billings in excess of costs and estimated earnings on uncompleted contracts	46,536		(46,536	)	—		—
Accrued expenses and other current liabilities	24,575		2,663		—		27,238
Current portion of long-term debt	2,173		—		62		2,235
Current operating lease liabilities (c)	—		—		3,824		3,824
Long-term debt	39,983		—		65		40,048
Long-term operating lease liabilities (c)	—		—		19,656		19,656
Other long-term liabilities	2,498		—		(794	)	1,704
Stockholders' Equity
Accumulated deficit	(7,782	)	555		(128	)	(7,355	)

(a) Balances as previously reported on the Company's Quarterly Report on Form 10-Q for the quarter ended June 30, 2019.

(b) Prior to the adoption of ASC Topic 606, retainage receivable was included within accounts receivable, net.

(c) Prior to the adoption of ASC Topic 842, operating lease right-of-use assets and current and long-term operating lease liabilities were not recorded on the Company's condensed consolidated balance sheets.

CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS
(Unaudited)
	Three months ended June 30, 2019
(in thousands)	Previously Reported(a)			Adjustments due to ASC Topic 606			Adjustments due to ASC Topic 842		As Recast
Revenue
Construction	$	104,925		$	(166	)	—		$	104,759
Service	27,828			16			—		27,844
Total revenue	132,753			(150		)	—		132,603
Cost of revenue
Construction	94,503			(427		)	—		94,076
Service	20,849			(17		)	—		20,832
Total cost of revenue	115,352			(444		)	—		114,908
Gross profit	17,401			294			—		17,695
Operating expenses:
Selling, general and administrative expenses	17,079			—			—		17,079
Amortization of intangibles	175			—			—		175
Total operating expenses	17,254			—			—		17,254
Operating income	147			294			—		441
Other income (expenses):
Interest expense, net	(1,597		)	—			—		(1,597		)
Gain on disposition of property and equipment	9			—			—		9
Loss on debt extinguishment	(513		)	—			—		(513		)
Loss on change in fair value of warrant liability	(103		)	—			—		(103		)
Total other expenses	(2,204		)	—			—		(2,204		)
Income before income taxes	(2,057		)	294			—		(1,763		)
Income tax provision (benefit)	(553		)	79			—		(474		)
Net loss	$	(1,504	)	$	215		$	—	$	(1,289	)

(a) Balances as previously reported on the Company's Quarterly Report on Form 10-Q for the three months ended June 30, 2019.

CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS
(Unaudited)
	Six months ended June 30, 2019
(in thousands)	Previously Reported(a)			Adjustments due to ASC Topic 606			Adjustments due to ASC Topic 842		As Recast
Revenue
Construction	$	209,599		$	(380	)	$	—	$	209,219
Service	57,105			26			—		57,131
Total revenue	266,704			(354		)	—		266,350
Cost of revenue
Construction	185,864			(244		)	—		185,620
Service	43,406			5			—		43,411
Total cost of revenue	229,270			(239		)	—		229,031
Gross profit	37,434			(115		)	—		37,319
Operating expenses:
Selling, general and administrative expenses	33,124			—			—		33,124
Amortization of intangibles	350			—			—		350
Total operating expenses	33,474			—			—		33,474
Operating income	3,960			(115		)	—		3,845
Other income (expenses):
Interest expense, net	(2,430		)	—			—		(2,430		)
Gain on disposition of property and equipment	21			—			—		21
Loss on debt extinguishment	(513		)	—			—		(513		)
Loss on change in fair value of warrant liability	(103		)	—			—		(103		)
Total other expenses	(3,025		)	—			—		(3,025		)
Income before income taxes	935			(115		)	—		820
Income tax provision (benefit)	293			(32		)	—		261
Net income	$	642		$	(83	)	$	—	$	559

(a) Balances as previously reported on the Company's Quarterly Report on Form 10-Q for the six months ended June 30, 2019.

Recent Accounting Pronouncements

In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments, which introduced an expected credit loss methodology for the measurement and recognition of credit losses on most financial instruments, including trade receivables and off-balance sheet credit exposure. Under this guidance, an entity is required to consider a broader range of information to estimate expected credit losses, which may result in earlier recognition of losses. This ASU also requires disclosure of information regarding how a company developed its allowance, including changes in the factors that influenced management’s estimate of expected credit losses and the reasons for those changes. The guidance is effective for smaller reporting companies on January 1, 2023 with early adoption permitted. The adoption of this standard will be through a cumulative-effect adjustment to retained earnings as of the effective date. Based on our historical experience, the Company does not expect that this pronouncement will have a significant impact in its financial statements or on the estimate of the allowance for doubtful accounts.

In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740), which affects general principles within Topic 740, and is meant to simplify and reduce the cost of accounting for income taxes. It removes certain exceptions to the general principles in Topic 740 and simplifies areas including franchise taxes that are partially based on income, transactions with a government that result in a step up in the tax basis of goodwill, the incremental approach for intraperiod tax allocation, interim period income tax accounting for year-to-date losses that exceed anticipated losses and enacted changes in tax laws in interim periods. The changes are effective for annual periods beginning after December 15, 2020. Management is currently assessing the impact of this pronouncement on its condensed consolidated financial statements.

In March 2020, the FASB issued ASU 2020-03, Codification Improvements to Financial Instruments, which makes improvements to financial instruments guidance. The amendments make the Codification easier to understand and easier to apply by eliminating inconsistencies and providing clarifications. With regard to amendments related to Issue 1, Issue 2, Issue 4 and Issue 5, for public business entities, the amendments are effective upon issuance of this final ASU. With regard to amendments related to Issue 6 and Issue 7, for entities that have not yet adopted the guidance in Update 2016-13, the effective dates and the transition requirements for these amendments are the same as the effective date and transition requirements in ASU 2016-13. For entities that have adopted the guidance in ASU 2016-13, the amendments are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. We do not expect the adoption of this pronouncement to have a material impact on our condensed consolidated financial statements or presentation thereof.

The FASB also issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting in March 2020. The new guidance provides optional expedients for applying GAAP to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. The guidance is effective prospectively as of March 12, 2020 through December 31, 2022 and interim periods within those fiscal years. We do not expect the adoption of this ASU to have a material impact on our condensed consolidated financial statements or presentation thereof.

Fair Value Measurements

The Company measures the fair value of financial assets and liabilities in accordance with ASC Topic 820 – Fair Value Measurements and Disclosures, which defines fair value, establishes a framework for measuring fair value and expands disclosures about fair value measurements. ASC Topic 820 establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value and requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to measurements involving significant unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are as follows:

• Level 1 — inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that are accessible at the measurement date;

• Level 2 — inputs other than quoted prices included in Level 1 that are observable for the asset or liability either directly or indirectly such as quoted prices in active markets for similar assets and liabilities, quoted prices for identical or similar assets or liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of assets or liabilities; and

• Level 3 — unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.

The Company believes that the carrying amounts of its financial instruments, including cash and cash equivalents, trade accounts receivable and accounts payable consist primarily of instruments without extended maturities, which approximate fair value primarily due to their short-term maturities and low risk of counterparty default. We also believe that the carrying value of the 2019 Refinancing Agreement term loan approximates its fair value due to the variable rate on such debt. As of June 30, 2020 and December 31, 2019, the Company determined that the fair value of its 2019 Refinancing Agreement term loan was $41.0 million at each date. Such fair value is determined using discounted estimated future cash flows using level 3 inputs.

In connection with the 2019 Refinancing Agreement, on the Refinancing Closing Date, the Company issued to CB and the other lenders under the CB Warrants to purchase up to a maximum of 263,314 shares of the Company's common stock at an exercise price of $7.63 per share subject to certain adjustments, including for stock dividends, stock splits or reclassifications (refer to Note 7 - Debt). The fair value of the Company’s warrant liability is recorded in the Company’s condensed consolidated financial statements and is determined using the Black-Scholes-Merton option pricing model. The valuation inputs include the quoted price of the Company’s common stock in an active market, volatility and expected life of the warrants, which are Level 3 inputs. Volatility is based on the actual market activity of the Company’s stock. The expected life is based on the remaining contractual term of the warrants and the risk-free interest rate is based on the implied yield available on U.S. Treasury Securities with a maturity equivalent to the warrants’ expected life.

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Accounting Standards (Tables)

6 Months Ended

Jun. 30, 2020

Accounting Changes and Error Corrections [Abstract]

Effects of Adoption of ASC 606 and ASC 842 on Consolidated Financial Statements

The effect of the changes made to the Company's condensed consolidated June 30, 2019 balance sheet and condensed consolidated statement of operations for the three and six month periods ended June 30, 2019 for the adoption of ASC Topic 606 and ASC Topic 842 were as follows:

CONDENSED CONSOLIDATED BALANCE SHEET
(Unaudited)
(in thousands)	Previously Reported Balance as of June 30, 2019(a)		Adjustments due to ASC Topic 606		Adjustments due to ASC Topic 842		Balance as of June 30, 2019 (As Recast)
Assets
Accounts receivable, net (b)	142,761		(31,236	)	—		111,525
Contract assets	—		68,285		—		68,285
Costs and estimated earnings in excess of billings on uncompleted contracts	36,030		(36,030	)	—		—
Other current assets	4,637		1		—		4,638
Operating lease right-of-use assets (c)	—		—		22,685		22,685
Deferred tax asset	4,170		(207	)	—		3,963
Liabilities
Contract liabilities	—		44,131		—		44,131
Billings in excess of costs and estimated earnings on uncompleted contracts	46,536		(46,536	)	—		—
Accrued expenses and other current liabilities	24,575		2,663		—		27,238
Current portion of long-term debt	2,173		—		62		2,235
Current operating lease liabilities (c)	—		—		3,824		3,824
Long-term debt	39,983		—		65		40,048
Long-term operating lease liabilities (c)	—		—		19,656		19,656
Other long-term liabilities	2,498		—		(794	)	1,704
Stockholders' Equity
Accumulated deficit	(7,782	)	555		(128	)	(7,355	)

(a) Balances as previously reported on the Company's Quarterly Report on Form 10-Q for the quarter ended June 30, 2019.

(b) Prior to the adoption of ASC Topic 606, retainage receivable was included within accounts receivable, net.

(c) Prior to the adoption of ASC Topic 842, operating lease right-of-use assets and current and long-term operating lease liabilities were not recorded on the Company's condensed consolidated balance sheets.

CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS
(Unaudited)
	Three months ended June 30, 2019
(in thousands)	Previously Reported(a)			Adjustments due to ASC Topic 606			Adjustments due to ASC Topic 842		As Recast
Revenue
Construction	$	104,925		$	(166	)	—		$	104,759
Service	27,828			16			—		27,844
Total revenue	132,753			(150		)	—		132,603
Cost of revenue
Construction	94,503			(427		)	—		94,076
Service	20,849			(17		)	—		20,832
Total cost of revenue	115,352			(444		)	—		114,908
Gross profit	17,401			294			—		17,695
Operating expenses:
Selling, general and administrative expenses	17,079			—			—		17,079
Amortization of intangibles	175			—			—		175
Total operating expenses	17,254			—			—		17,254
Operating income	147			294			—		441
Other income (expenses):
Interest expense, net	(1,597		)	—			—		(1,597		)
Gain on disposition of property and equipment	9			—			—		9
Loss on debt extinguishment	(513		)	—			—		(513		)
Loss on change in fair value of warrant liability	(103		)	—			—		(103		)
Total other expenses	(2,204		)	—			—		(2,204		)
Income before income taxes	(2,057		)	294			—		(1,763		)
Income tax provision (benefit)	(553		)	79			—		(474		)
Net loss	$	(1,504	)	$	215		$	—	$	(1,289	)

(a) Balances as previously reported on the Company's Quarterly Report on Form 10-Q for the three months ended June 30, 2019.

CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS
(Unaudited)
	Six months ended June 30, 2019
(in thousands)	Previously Reported(a)			Adjustments due to ASC Topic 606			Adjustments due to ASC Topic 842		As Recast
Revenue
Construction	$	209,599		$	(380	)	$	—	$	209,219
Service	57,105			26			—		57,131
Total revenue	266,704			(354		)	—		266,350
Cost of revenue
Construction	185,864			(244		)	—		185,620
Service	43,406			5			—		43,411
Total cost of revenue	229,270			(239		)	—		229,031
Gross profit	37,434			(115		)	—		37,319
Operating expenses:
Selling, general and administrative expenses	33,124			—			—		33,124
Amortization of intangibles	350			—			—		350
Total operating expenses	33,474			—			—		33,474
Operating income	3,960			(115		)	—		3,845
Other income (expenses):
Interest expense, net	(2,430		)	—			—		(2,430		)
Gain on disposition of property and equipment	21			—			—		21
Loss on debt extinguishment	(513		)	—			—		(513		)
Loss on change in fair value of warrant liability	(103		)	—			—		(103		)
Total other expenses	(3,025		)	—			—		(3,025		)
Income before income taxes	935			(115		)	—		820
Income tax provision (benefit)	293			(32		)	—		261
Net income	$	642		$	(83	)	$	—	$	559

(a) Balances as previously reported on the Company's Quarterly Report on Form 10-Q for the six months ended June 30, 2019.

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Accounts Receivable and Allowance for Doubtful Accounts (Tables)

6 Months Ended

Jun. 30, 2020

Receivables [Abstract]

Components of Accounts Receivable and Allowance for Doubtful Accounts

Accounts receivable and the allowance for doubtful accounts are comprised of the following:

(in thousands)	June 30, 2020			December 31, 2019
Accounts receivable - trade	$	101,717		$	105,373
Allowance for doubtful accounts	(266		)	(306		)
Accounts receivable, net	$	101,451		$	105,067

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Contract Assets and Liabilities (Tables)

6 Months Ended

Jun. 30, 2020

Revenue from Contract with Customer [Abstract]

Components of Contract Asset and Liability Balances

Contract assets include amounts due under retainage provisions and costs and estimated earnings in excess of billings. The components of the contract asset balances as of the respective dates were as follows:

(in thousands)	June 30, 2020		December 31, 2019		Change
Contract assets
Costs in excess of billings and estimated earnings	$	39,898	$	44,315	$	(4,417	)
Retainage receivable	32,389		32,873		(484		)
Total contract assets	$	72,287	$	77,188	$	(4,901	)

Contract liabilities include billings in excess of contract costs and provisions for losses. The components of the contract liability balances as of the respective dates were as follows:

(in thousands)	June 30, 2020		December 31, 2019		Change
Contract liabilities
Billings in excess of costs and estimated earnings	$	57,874	$	40,662	$	17,212
Provisions for losses	750		1,708		(958		)
Total contract liabilities	$	58,624	$	42,370	$	16,254

Schedule of Contracts In Progress

The net (overbilling) underbilling position for contracts in process consist of the following:

(in thousands)	June 30, 2020			December 31, 2019
Revenue earned on uncompleted contracts	$	755,456		$	726,215
Less: Billings to date	(773,432		)	(722,562		)
Net (overbilling) underbilling	$	(17,976	)	$	3,653
(in thousands)	June 30, 2020			December 31, 2019
Costs in excess of billings and estimated earnings	$	39,898		$	44,315
Billings in excess of costs and estimated earnings	(57,874		)	(40,662		)
Net (overbilling) underbilling	$	(17,976	)	$	3,653

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Goodwill and Intangibles (Tables)

6 Months Ended

Jun. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill and Intangible Assets

Intangible assets are comprised of the following:

(in thousands)	Gross carrying amount		Accumulated amortization			Net intangible assets, excluding goodwill
June 30, 2020
Amortized intangible assets:
Customer Relationships – Service	$	4,710	$	(2,906	)	$	1,804
Favorable Leasehold Interests	530		(400		)	130
Total amortized intangible assets	5,240		(3,306		)	1,934
Unamortized intangible assets:
Trade Name	9,960		—			9,960
Total unamortized intangible assets	9,960		—			9,960
Total amortized and unamortized assets, excluding goodwill	$	15,200	$	(3,306	)	$	11,894

(in thousands)	Gross carrying amount		Accumulated amortization			Net intangible assets, excluding goodwill
December 31, 2019
Amortized intangible assets:
Customer Relationships – Service	$	4,710	$	(2,655	)	$	2,055
Favorable Leasehold Interests	530		(234		)	296
Total amortized intangible assets	5,240		(2,889		)	2,351
Unamortized intangible assets:
Trade Name	9,960		—			9,960
Total unamortized intangible assets	9,960		—			9,960
Total amortized and unamortized assets, excluding goodwill	$	15,200	$	(2,889	)	$	12,311

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Debt (Tables)

6 Months Ended

Jun. 30, 2020

Debt Disclosure [Abstract]

Schedule of Long-Term Debt

Long-term debt consists of the following obligations as of:

(in thousands)	June 30, 2020			December 31, 2019
2019 Refinancing Term Loan - term loan payable in quarterly installments of principal, (commencing in September 2020) plus interest through April 2022	$	41,000		$	41,000
Finance leases – collateralized by vehicles, payable in monthly installments of principal, plus interest ranging from 4.85% to 6.45% through 2025	6,285			6,585
Total debt	47,285			47,585
Less - Current portion of long-term debt	(6,414		)	(4,425		)
Less - Unamortized discount and debt issuance costs	(3,350		)	(4,292		)
Long-term debt	$	37,521		$	38,868

Summary of Additional Margin and Commitment Fees Payable

The following is a summary of the additional margin and commitment fees payable on the available revolving credit commitment:

Level	Senior Leverage Ratio	Additional Margin for Base Rate loans		Additional Margin for Libor Rate loans		Commitment Fee
I	Greater than or equal to 2.50 to 1.00	3.00	%	4.00	%	0.50	%
II	Less than 2.50 to 1.00, but greater than or equal to 2.00 to 1.00	2.75	%	3.75	%	0.50	%
III	Less than 2.00 to 1.00, but greater than or equal to 1.50 to 1.00	2.50	%	3.50	%	0.50	%
IV	Less than 1.50 to 1.00	2.25	%	3.25	%	0.50	%

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Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2020

Fair Value Disclosures [Abstract]

Fair Value Assumptions Using Black-Scholes-Merton Option Pricing Model

The table below sets forth the assumptions used within the Black-Scholes-Merton option pricing model to value the Company's warrant liabilities as of June 30, 2020:

Stock price	$	3.70
Exercise price	$	7.63
Time until expiration (years)	3.79
Expected volatility	70.0		%
Risk-free interest rate	0.3		%
Expected dividend yield	—		%

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Earnings per Share (Tables)

6 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

	Three months ended June 30,					Six months ended  June 30,
	2020		2019			2020		2019
(in thousands, except per share amounts)			(As Recast)					(As Recast)
EPS numerator:
Net income (loss)	$	2,947	$	(1,289	)	$	2,895	$	559
EPS denominator:
Weighted average shares outstanding – basic	7,846		7,643			7,822		7,643
Impact of dilutive securities	59		—			56		74
Weighted average shares outstanding – diluted	7,905		7,643			7,878		7,717
EPS:
Basic	$	0.38	$	(0.17	)	$	0.37	$	0.07
Diluted	$	0.37	$	(0.17	)	$	0.37	$	0.07

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following table summarizes the securities that were antidilutive or out-of-the-money, and therefore, were not included in the computations of diluted loss per common share:

	Three months ended June 30,		Six months ended June 30,
	2020	2019	2020	2019
Out-of-the money warrants (see Note 8)	4,576,799	4,576,799	4,576,799	4,576,799
Service-based RSUs (See Note 17)	463	138,782	1,255	2,867
Performance and market-based RSUs(1)	9,674	—	—	—
Out-of-the money UPOs (See Note 8)	—	27,360	—	27,360
Total	4,586,936	4,742,941	4,578,054	4,607,026

⁽¹⁾ For the three and six months ended June 30, 2020 and 2019, certain PRSUs and MRSUs (both as defined below) were not included in the computation of diluted loss per share because the performance and market conditions were not satisfied during the periods and would not be satisfied if the reporting date was at the end of the contingency periods.

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Operating Segments (Tables)

6 Months Ended

Jun. 30, 2020

Segment Reporting [Abstract]

Condensed Consolidated Segment Information

Condensed consolidated segment information for the periods presented is as follows:

	Three months ended June 30,
	2020			2019
(in thousands)				(As Recast)
Statement of Operations Data:
Revenue:
Construction	$	105,937		$	104,759
Service	29,248			27,844
Total revenue	135,185			132,603
Gross profit:
Construction	12,213			10,683
Service	8,122			7,012
Total gross profit	20,335			17,695
Selling, general and administrative expenses:(1)
Construction	8,024			11,229
Service	5,588			5,335
Corporate	140			515
Total selling, general and administrative expenses	13,752			17,079
Amortization of intangibles	274			175
Operating income	$	6,309		$	441
Operating income for reportable segments	$	6,309		$	441
Less unallocated amounts:
Interest expense, net	(2,137		)	(1,597		)
Gain (loss) on sale of property and equipment	(13		)	9
Loss on debt extinguishment	—			(513		)
Gain on change in fair value of warrant liability	(102		)	(103		)
Total unallocated amounts	(2,252		)	(2,204		)
Total consolidated income (loss) before income taxes	$	4,057		$	(1,763	)
Other Data:
Depreciation and amortization:
Construction	$	1,032		$	1,003
Service	330			282
Corporate	274			175
Total other data	$	1,636		$	1,460

	Six months ended June 30,
	2020			2019
(in thousands)				(As Recast)
Statement of Operations Data:
Revenue:
Construction	$	215,423		$	209,219
Service	58,534			57,131
Total revenue	273,957			266,350
Gross profit:
Construction	23,195			23,599
Service	15,364			13,720
Total gross profit	38,559			37,319
Selling, general and administrative expenses:(1)
Construction	18,200			21,681
Service	11,917			10,561
Corporate	435			882
Total selling, general and administrative expenses	30,552			33,124
Amortization of intangibles	417			350
Operating income	$	7,590		$	3,845
Operating income for reportable segments	$	7,590		$	3,845
Less unallocated amounts:
Interest expense, net	(4,295		)	(2,430		)
Gain on sale of property and equipment	17			21
Loss on debt extinguishment	—			(513		)
Gain on change in fair value of warrant liability	59			(103		)
Total unallocated amounts	(4,219		)	(3,025		)
Total consolidated income (loss) before income taxes	$	3,371		$	820
Other Data:
Depreciation and amortization:
Construction	$	2,062		$	1,976
Service	661			547
Corporate	417			350
Total other data	$	3,140		$	2,873

(1) Starting January 1, 2020, we changed the methodology in which we present our corporate selling, general and administrative expenses to our CODM to better reflect the way the business is managed. Under this new methodology, all corporate expenses except for stock-based compensation are allocated to our Construction and Service segments. For comparability purposes, we reclassified our selling, general and administrative expense segment amounts for the three and six months ended June 30, 2019 to align with this updated allocation methodology.

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Leases (Tables)

6 Months Ended

Jun. 30, 2020

Leases [Abstract]

Supplemental Balance Sheets Information

The following table summarizes the lease amounts included in our condensed consolidated balance sheets:

(in thousands)	Classification on the Condensed Consolidated Balance Sheets	June 30, 2020		December 31, 2019
Assets
Operating	Operating lease right-of-use assets (a)	$	19,616	$	21,056
Finance	Property and equipment, net (b)	6,088		6,412
Total lease assets		$	25,704	$	27,468
Liabilities
Current
Operating	Current operating lease liabilities	$	3,681	$	3,750
Finance	Current portion of long-term debt	2,414		2,424
Noncurrent
Operating	Long-term lease liabilities	16,502		18,247
Finance	Long-term debt	3,871		4,161
Total lease liabilities		$	26,468	$	28,582

(a) Operating lease assets are recorded net of accumulated amortization of $9.9 million at June 30, 2020 and $8.5 million at December 31, 2019.

(b) Finance lease assets are recorded net of accumulated amortization of $4.9 million at June 30, 2020 and $4.7 million at December 31, 2019.

Summary of Lease Costs, Lease Terms and Discount Rates

The following is a summary of the lease terms and discount rates:

	June 30, 2020		December 31, 2019
Weighted average lease term (in years)
Operating	5.93		6.20
Finance	2.83		2.96
Weighted average discount rate
Operating	4.81	%	4.80	%
Finance	5.64	%	5.69	%

The following table summarizes the lease costs included in our condensed consolidated statements of operations for the three months ended:

		For the Three months ended June 30,				For the Six months ended June 30,
(in thousands)	Classification on the Condensed Consolidated Statement of Operations	2020		2019		2020		2019
Operating lease cost	Cost of revenue(a)	$	893	$	853	$	1,777	1,667
Operating lease cost	Selling, general and administrative expenses(a)	376		346		757		671
Finance lease cost
Amortization	Cost of revenue(b)	645		613		1,311		1,183
Interest	Interest expense, net(b)	86		79		179		154
Total lease cost		$	2,000	$	1,891	$	4,024	$	3,675

(a) Operating lease costs recorded in cost of sales includes $0.1 million and $0.2 million of variable lease costs for the three months ended June 30, 2020 and 2019, respectively. In addition, $0.1 million of variable lease costs are included in Selling, general and administrative expenses for both the three months ended June 30, 2020 and 2019. Operating lease costs recorded in cost of sales includes $0.4 million of variable lease costs for the six months ended June 30, 2020 and 2019. In addition, $0.1 million of variable lease costs are included in Selling, general and administrative expenses for the six months ended June 30, 2020 and 2019.

(b) Finance lease costs recorded in cost of revenue for the three months ended June 30, 2020 and 2019 includes $0.5 million and $0.7 million of variable leases costs. Finance lease costs recorded in cost of revenue for the six months ended June 30, 2020 and 2019 includes $1.2 million and $1.4 million of variable lease costs. These variable lease costs consist of fuel, maintenance, and sales tax charges. No variable lease costs for finance leases were recorded in selling, general and administrative expenses.

Future Minimum Commitment for Finance Leases

Future minimum commitments for finance and operating leases that have non-cancelable lease terms in excess of one year as of June 30, 2020 were as follows:

Year ending (in thousands):	Finance Leases			Operating Leases
Remainder of 2020	$	1,429		$	2,294
2021	2,426			4,565
2022	1,898			4,305
2023	902			3,303
2024	162			2,701
Thereafter	1			6,169
Total minimum lease payments	$	6,818		$	23,337
Amounts representing interest	(533		)
Present value of net minimum lease payments	$	6,285

Future Minimum Commitment for Operating Leases

Future minimum commitments for finance and operating leases that have non-cancelable lease terms in excess of one year as of June 30, 2020 were as follows:

Year ending (in thousands):	Finance Leases			Operating Leases
Remainder of 2020	$	1,429		$	2,294
2021	2,426			4,565
2022	1,898			4,305
2023	902			3,303
2024	162			2,701
Thereafter	1			6,169
Total minimum lease payments	$	6,818		$	23,337
Amounts representing interest	(533		)
Present value of net minimum lease payments	$	6,285

Leases Supplemental Cash Flow Information

The following is a summary of other information and supplemental cash flow information related to finance and operating leases for the six months ended:

(in thousands)	June 30, 2020			June 30, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	2,910		$	2,273
Operating cash flows from finance leases	179			154
Financing cash flows from finance leases	1,285			1,140
Right-of-use assets exchanged for lease liabilities:
Operating leases	$	—		$	3,022
Finance leases	1,050			1,630
Right-of-use assets disposed or adjusted modifying operating leases liabilities	$	586		$	1,651
Right-of-use assets disposed or adjusted modifying finance leases liabilities	$	(64	)	$	—

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Self-Insurance (Tables)

6 Months Ended

Jun. 30, 2020

Insurance [Abstract]

Components of Self-Insurance

The components of the self-insurance liability as of June 30, 2020 and December 31, 2019 are as follows:

(in thousands)	As of June 30, 2020		As of December 31, 2019
Current liability — workers’ compensation and general liability	$	514	$	703
Current liability — medical and dental	511		821
Non-current liability	452		382
Total liability shown in Accrued expenses and other current liabilities	$	1,477	$	1,906
Restricted cash	$	113	$	113

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Management Incentive Plans (Tables)

6 Months Ended

Jun. 30, 2020

Service-Based RSUs

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Nonvested Restricted Stock Units Activity

The following table summarizes our service-based RSU activity for the six months ended June 30, 2020:

	Awards		Weighted-Average Grant Date Fair Value
Unvested at December 31, 2019	328,575		$	7.83
Granted	118,633		3.48
Vested	(167,085	)	8.95
Forfeited	(10,109	)	6.80
Unvested at June 30, 2020	270,014		$	5.34

Performance-Based RSUs

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Nonvested Restricted Stock Units Activity

The following table summarizes our PRSU activity for the six months ended June 30, 2020:

	Awards		Weighted-Average Grant Date Fair Value
Unvested at December 31, 2019	62,307		$	12.62
Granted	96,500		3.67
Vested	—		—
Forfeited	(13,250	)	11.31
Unvested at June 30, 2020	145,557		$	6.80

Market-Based Awards

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Nonvested Restricted Stock Units Activity

The following table summarizes our market-based RSU (“MRSUs”) activity for the six months ended June 30, 2020:

	Awards		Weighted-Average Grant Date Fair Value
Unvested at December 31, 2019	125,000		$	6.58
Granted	—		—
Vested	—		—
Forfeited	(22,500	)	6.58
Unvested at June 30, 2020	102,500		$	6.58

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Organization and Plan of Business Operations Organization and Plan of Business Operations (Details)	6 Months Ended
	Jun. 30, 2020 segment
Unusual or Infrequent Item, or Both [Line Items]
Number of operating segments	2
Service period	2 years
Percentage of salary reduction for selected group	10.00%
Minimum
Unusual or Infrequent Item, or Both [Line Items]
Suspension period of all discretionary, non-essential expenditures	1 month
Maximum
Unusual or Infrequent Item, or Both [Line Items]
Suspension period of all discretionary, non-essential expenditures	3 months

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Accounting Standards - Additional Information (Details) - Accounting Standards Update 2014-09 $ in Thousands	Jan. 01, 2019 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of accounting change	$ 639
Accumulated deficit
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of accounting change	$ 639

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Accounting Standards - Effects of Adoption of ASC 606 and ASC 842 on Balance Sheets (Details) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts receivable, net	$ 101,451	$ 105,067	$ 111,525
Contract assets	72,287	77,188	68,285
Costs and estimated earnings in excess of billings on uncompleted contracts			0
Other current assets	4,340	4,174	4,638
Operating lease right-of-use assets	19,616	21,056	22,685
Deferred tax asset	3,988	4,786	3,963
Contract liabilities	58,624	42,370	44,131
Billings in excess of costs and estimated earnings on uncompleted contracts			0
Accrued expenses and other current liabilities	29,373	20,057	27,238
Current portion of long-term debt	6,414	4,425	2,235
Current operating lease liabilities	3,681	3,750	3,824
Long-term debt	37,521	38,868	40,048
Long-term operating lease liabilities	16,502	18,247	19,656
Other long-term liabilities	940	763	1,704
Accumulated deficit	$ (6,793)	$ (9,688)	(7,355)
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts receivable, net			0
Contract assets			0
Costs and estimated earnings in excess of billings on uncompleted contracts			0
Other current assets			0
Operating lease right-of-use assets			22,685
Deferred tax asset			0
Contract liabilities			0
Billings in excess of costs and estimated earnings on uncompleted contracts			0
Accrued expenses and other current liabilities			0
Current portion of long-term debt			62
Current operating lease liabilities			3,824
Long-term debt			65
Long-term operating lease liabilities			19,656
Other long-term liabilities			(794)
Accumulated deficit			(128)
Calculated under Revenue Guidance in Effect before Topic 606
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts receivable, net			142,761
Contract assets			0
Costs and estimated earnings in excess of billings on uncompleted contracts			36,030
Other current assets			4,637
Operating lease right-of-use assets			0
Deferred tax asset			4,170
Contract liabilities			0
Billings in excess of costs and estimated earnings on uncompleted contracts			46,536
Accrued expenses and other current liabilities			24,575
Current portion of long-term debt			2,173
Current operating lease liabilities			0
Long-term debt			39,983
Long-term operating lease liabilities			0
Other long-term liabilities			2,498
Accumulated deficit			(7,782)
Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts receivable, net			(31,236)
Contract assets			68,285
Costs and estimated earnings in excess of billings on uncompleted contracts			(36,030)
Other current assets			1
Operating lease right-of-use assets			0
Deferred tax asset			(207)
Contract liabilities			44,131
Billings in excess of costs and estimated earnings on uncompleted contracts			(46,536)
Accrued expenses and other current liabilities			2,663
Current portion of long-term debt			0
Current operating lease liabilities			0
Long-term debt			0
Long-term operating lease liabilities			0
Other long-term liabilities			0
Accumulated deficit			$ 555

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Accounting Standards - Effects of Adoption of ASC 606 and ASC 842 on Statement of Operations (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue	$ 135,185		$ 132,603		$ 273,957	$ 266,350
Cost of revenue	114,850		114,908		235,398	229,031
Gross profit	20,335		17,695		38,559	37,319
Selling, general and administrative expenses	13,752		17,079		30,552	33,124
Amortization of intangibles	274		175		417	350
Total operating expenses	14,026		17,254		30,969	33,474
Operating income	6,309		441		7,590	3,845
Interest expense, net	(2,137)		(1,597)		(4,295)	(2,430)
Gain (loss) on disposition of property and equipment	(13)		9		17	21
Loss on debt extinguishment	0		(513)		0	(513)
Loss on change in fair value of warrant liability	(102)		(103)		59	(103)
Total unallocated amounts	(2,252)		(2,204)		(4,219)	(3,025)
Income (loss) before income taxes	4,057		(1,763)		3,371	820
Income tax provision (benefit)	1,110		(474)		476	261
Net income (loss)	$ 2,947	$ (52)	(1,289)	$ 1,847	$ 2,895	559
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue			0			0
Cost of revenue			0			0
Gross profit			0			0
Selling, general and administrative expenses			0			0
Amortization of intangibles			0			0
Total operating expenses			0			0
Operating income			0			0
Interest expense, net			0			0
Gain (loss) on disposition of property and equipment			0			0
Loss on debt extinguishment			0			0
Loss on change in fair value of warrant liability			0			0
Total unallocated amounts			0			0
Income (loss) before income taxes			0			0
Income tax provision (benefit)			0			0
Net income (loss)			0			0
Construction
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue			104,759			209,219
Cost of revenue			94,076			185,620
Construction | Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue			0			0
Cost of revenue			0			0
Service
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue			27,844			57,131
Cost of revenue			20,832			43,411
Service | Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue			0			0
Cost of revenue			0			0
Calculated under Revenue Guidance in Effect before Topic 606
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue			132,753			266,704
Cost of revenue			115,352			229,270
Gross profit			17,401			37,434
Selling, general and administrative expenses			17,079			33,124
Amortization of intangibles			175			350
Total operating expenses			17,254			33,474
Operating income			147			3,960
Interest expense, net			(1,597)			(2,430)
Gain (loss) on disposition of property and equipment			9			21
Loss on debt extinguishment			(513)			(513)
Loss on change in fair value of warrant liability			(103)			(103)
Total unallocated amounts			(2,204)			(3,025)
Income (loss) before income taxes			(2,057)			935
Income tax provision (benefit)			(553)			293
Net income (loss)			(1,504)			642
Calculated under Revenue Guidance in Effect before Topic 606 | Construction
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue			104,925			209,599
Cost of revenue			94,503			185,864
Calculated under Revenue Guidance in Effect before Topic 606 | Service
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue			27,828			57,105
Cost of revenue			20,849			43,406
Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue			(150)			(354)
Cost of revenue			(444)			(239)
Gross profit			294			(115)
Selling, general and administrative expenses			0			0
Amortization of intangibles			0			0
Total operating expenses			0			0
Operating income			294			(115)
Interest expense, net			0			0
Gain (loss) on disposition of property and equipment			0			0
Loss on debt extinguishment			0			0
Loss on change in fair value of warrant liability			0			0
Total unallocated amounts			0			0
Income (loss) before income taxes			294			(115)
Income tax provision (benefit)			79			(32)
Net income (loss)			215			(83)
Difference between Revenue Guidance in Effect before and after Topic 606 | Construction | Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue			(166)			(380)
Cost of revenue			(427)			(244)
Difference between Revenue Guidance in Effect before and after Topic 606 | Service | Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue			16			26
Cost of revenue			$ (17)			$ 5

XML

Accounts Receivable and Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Receivables [Abstract]
Accounts receivable - trade	$ 101,717	$ 105,373
Allowance for doubtful accounts	(266)	(306)
Accounts receivable, net	$ 101,451	$ 105,067	$ 111,525

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Contract Assets and Liabilities - Components of Contract Asset and Liability Balances (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Contract assets
Costs in excess of billings and estimated earnings	$ 39,898		$ 44,315
Retainage receivable	32,389		32,873
Total contract assets	72,287	$ 68,285	77,188
Change in costs in excess of billings and estimated earnings	(4,417)
Change in retainage receivable	(484)
Change in total contract assets	(4,901)	4,476
Contract liabilities
Billings in excess of costs and estimated earnings	57,874		40,662
Provisions for losses	750		1,708
Total contract liabilities	58,624		$ 42,370
Change in billings in excess of costs and estimated earnings	17,212
Change in provisions for losses	(958)
Change in total contract liabilities	$ 16,254	$ (4,686)

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Contract Assets and Liabilities - Additional Information (Details) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020 USD ($) project	Jun. 30, 2019 USD ($) project	Jun. 30, 2020 USD ($) project	Jun. 30, 2019 USD ($) project	Dec. 31, 2019 USD ($)
Property, Plant and Equipment [Line Items]
Percentage completed of certain milestones					10.00%
Claims and unapproved change orders	$ 39.4		$ 39.4		$ 38.4
Michigan Project
Property, Plant and Equipment [Line Items]
Number of Projects | project		1		1
Gross profit write up				$ 1.4
Four Construction Projects
Property, Plant and Equipment [Line Items]
Number of Projects | project	4		4
Project write downs	$ 1.5
Four Construction Projects | Southern California Region Project
Property, Plant and Equipment [Line Items]
Number of Projects | project		4		4
Project write downs				$ 2.2
Two Construction Projects
Property, Plant and Equipment [Line Items]
Number of Projects | project	2		2
Project write downs	$ 0.7
Gross profit write up			$ 1.2
Two Construction Projects | Southern California Region Project
Property, Plant and Equipment [Line Items]
Number of Projects | project	2		2
Eight Construction Projects
Property, Plant and Equipment [Line Items]
Number of Projects | project	8		8
Project write downs			$ 5.2
One Construction Project
Property, Plant and Equipment [Line Items]
Number of Projects | project		1		1
Gross profit write up		$ 0.3
One Construction Project | Southern California Region Project
Property, Plant and Equipment [Line Items]
Number of Projects | project		1		1
Project write downs				$ 0.3
One Construction Project | Mid-Atlantic Region Project
Property, Plant and Equipment [Line Items]
Number of Projects | project		1		1
Project write downs				$ 0.5
One Service Project
Property, Plant and Equipment [Line Items]
Number of Projects | project		1		1
Gross profit write up		$ 0.3
One Service Project | Mid-Atlantic Region Project
Property, Plant and Equipment [Line Items]
Number of Projects | project		1		1
Gross profit write up				$ 0.3
Three Construction Projects | Southern California Region Project
Property, Plant and Equipment [Line Items]
Number of Projects | project		3		3
Project write downs		$ 1.9
Three Construction Projects | Mid-Atlantic Region Project
Property, Plant and Equipment [Line Items]
Number of Projects | project		3		3
Gross profit write up				$ 1.0
Six Construction Projects
Property, Plant and Equipment [Line Items]
Number of Projects | project		6		6
Gross profit write up				$ 3.0
Seven Construction Projects
Property, Plant and Equipment [Line Items]
Number of Projects | project		7		7
Project write downs				$ 3.5

XML

Contract Assets and Liabilities - Schedule of Contracts In Progress (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Revenue earned on uncompleted contracts	$ 755,456	$ 726,215
Less: Billings to date	(773,432)	(722,562)
Net (overbilling) underbilling	(17,976)	3,653
Costs in excess of billings and estimated earnings	39,898	44,315
Billings in excess of costs and estimated earnings	$ (57,874)	$ (40,662)

XML

Goodwill and Intangibles - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 6,129,000		$ 6,129,000		$ 6,129,000
Amortization of intangibles	$ 274,000	$ 175,000	417,000	$ 350,000
Impairment of intangible assets (excluding goodwill)			0	0
Goodwill, impairment loss			$ 0	$ 0

XML

Goodwill and Intangibles - Schedule of Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 5,240	$ 5,240
Finite-lived intangible assets, accumulated amortization	(3,306)	(2,889)
Finite-lived intangible assets, net	1,934	2,351
Indefinite-lived intangible assets (excluding goodwill)	9,960	9,960
Intangible assets amortized excluding goodwill	9,960	9,960
Intangible assets, gross (excluding goodwill)	15,200	15,200
Intangible assets, net (excluding goodwill)	11,894	12,311
Customer Relationships – Service
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	4,710	4,710
Finite-lived intangible assets, accumulated amortization	(2,906)	(2,655)
Finite-lived intangible assets, net	1,804	2,055
Favorable Leasehold Interests
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	530	530
Finite-lived intangible assets, accumulated amortization	(400)	(234)
Finite-lived intangible assets, net	130	296
Trade Name
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets (excluding goodwill)	9,960	9,960
Intangible assets amortized excluding goodwill	$ 9,960	$ 9,960

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Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Debt Instrument [Line Items]
2019 Refinancing Term Loan - term loan payable in quarterly installments of principal, (commencing in September 2020) plus interest through April 2022	$ 41,000	$ 41,000
Finance leases – collateralized by vehicles, payable in monthly installments of principal, plus interest ranging from 4.85% to 6.45% through 2025	6,285	6,585
Total debt	47,285	47,585
Less - Current portion of long-term debt	(6,414)	(4,425)	$ (2,235)
Less - Unamortized discount and debt issuance costs	(3,350)	(4,292)
Long-term debt	$ 37,521	$ 38,868
Minimum
Debt Instrument [Line Items]
Finance lease, discount rate	4.85%
Maximum
Debt Instrument [Line Items]
Finance lease, discount rate	6.45%

XML

Debt - Additional Information (Details) - USD ($)						1 Months Ended			3 Months Ended				6 Months Ended		12 Months Ended
	Apr. 01, 2021	Jan. 01, 2020	Oct. 01, 2019	Jan. 12, 2019	Jan. 12, 2018	Jul. 31, 2021	Mar. 31, 2020	Jun. 30, 2019	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Sep. 30, 2020	Aug. 31, 2020	Dec. 31, 2019	Dec. 31, 2016	Nov. 30, 2019	Apr. 12, 2019
Debt Instrument [Line Items]
Long-term debt										$ 41,000,000			$ 41,000,000				$ 41,000,000
Gain (loss) on change in fair value of warrant liability										(102,000)		$ (103,000)	59,000	$ (103,000)
Class of warrant or right, exercise price of warrants or rights (in usd per share)								$ 11.50				$ 11.50		$ 11.50
Percentage of number of shares																	2.00%
Amortization of debt issuance costs													1,080,000	$ 510,000
2019 Refinancing Agreement
Debt Instrument [Line Items]
Debt instrument, face amount																				$ 40,000,000.0
Gain (loss) on change in fair value of warrant liability										$ 100,000		$ 100,000	$ (100,000)	100,000
Debt instrument, interest rate, effective percentage										13.00%			13.00%
Leverage ratio			330.00%				425.00%	425.00%
Debt instrument, interest rate, increase (decrease)		1.00%
Class of warrant or right, number of securities called by each warrant or right (in shares)										263,314			263,314				263,314
Class of warrant or right, exercise price of warrants or rights (in usd per share)										$ 7.63			$ 7.63				$ 7.63
Warrants and rights outstanding										$ 300,000			$ 300,000				$ 400,000	$ 900,000
Derivative liability										0			0				0	400,000
Debt instrument, unamortized discount																	1,300,000
Debt issuance costs, net																	2,500,000
Interest expense, debt										100,000		100,000	200,000	100,000
Amortization of debt issuance costs										$ 400,000		$ 200,000	$ 700,000	$ 200,000
2019 Refinancing Amendment Number One and Waiver
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity			$ 15,000,000
Debt instrument, percentage of customer accounts required to approve amendment			75.00%
Debt instrument, non refundable waiver fee																	400,000
Debt instrument, non refundable amendment fee																	$ 1,000,000
Line of credit facility, unused capacity, commitment fee percentage																	50.10%
Leverage ratio			330.00%				425.00%
Debt instrument, interest rate, increase (decrease)			3.00%
2019 ABL Credit Agreement
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate													3.00%
Debt instrument, interest rate, effective percentage								7.50%		5.25%		7.50%	5.25%	7.50%
Leverage ratio			330.00%				425.00%
Debt issuance costs, net										$ 900,000			$ 900,000
Long term lines of credit										0			0				$ 0
Amortization of debt issuance costs										$ 100,000		$ 100,000	$ 100,000	$ 100,000
2019 ABL Credit Amendment Number One and Waiver
Debt Instrument [Line Items]
Debt instrument, non refundable waiver fee																	$ 7,500
Leverage ratio			330.00%				425.00%
Lender's approval for acquisition, percentage																	50.10%
Minimum | 2019 Refinancing Amendment Number One and Waiver
Debt Instrument [Line Items]
Debt instrument, liquidity of loan parties																			$ 10,000,000
Minimum | 2019 ABL Credit Agreement
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage										3.00%			3.00%
Debt instrument, basis spread on variable rate													2.00%
Line of credit facility, unused capacity, commitment fee percentage													0.25%
Minimum | 2019 ABL Credit Amendment Number One and Waiver
Debt Instrument [Line Items]
Debt instrument, liquidity of loan parties																			$ 10,000,000
Maximum | 2019 Refinancing Agreement
Debt Instrument [Line Items]
Leverage ratio											400.00%
Maximum | 2019 ABL Credit Agreement
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage										3.50%			3.50%
Debt instrument, basis spread on variable rate													2.50%
Line of credit facility, unused capacity, commitment fee percentage													0.375%
Leverage ratio								400.00%
Bridge Loan
Debt Instrument [Line Items]
Debt instrument, periodic payment					$ 250,000
London Interbank Offered Rate (LIBOR) | 2019 Refinancing Agreement
Debt Instrument [Line Items]
Reference rate, minimum																	2.00%
Debt instrument, basis spread on variable rate																	11.00%
London Interbank Offered Rate (LIBOR) | 2019 ABL Credit Agreement
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate													2.00%
Base Rate | 2019 Refinancing Agreement
Debt Instrument [Line Items]
Reference rate, minimum																	3.00%
Debt instrument, basis spread on variable rate																	10.00%
Base Rate | Bridge Loan
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				5.00%
Eurodollar | Bridge Loan
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				6.00%
Forecast | 2019 Refinancing Agreement
Debt Instrument [Line Items]
Line of credit facility, unused capacity, commitment fee percentage									2.00%
Leverage ratio	200.00%					200.00%									285.00%	461.00%
Leverage ratio minimum requirement															4.00	4.00
Amortization of debt issuance costs									$ 1,000,000
Forecast | 2019 Refinancing Amendment Number One and Waiver
Debt Instrument [Line Items]
Leverage ratio	200.00%
Forecast | 2019 ABL Credit Agreement
Debt Instrument [Line Items]
Leverage ratio	200.00%					175.00%									285.00%	461.00%
Leverage ratio minimum requirement															4.0000
Forecast | 2019 ABL Credit Amendment Number One and Waiver
Debt Instrument [Line Items]
Leverage ratio	200.00%
Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity																				$ 25,000,000.0
Revolving Credit Facility | 2019 ABL Credit Agreement
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity																	$ 15,000,000.0
Line of credit facility, current borrowing capacity																	14,000,000
Line of credit facility reserved borrowing capacity																	$ 1,000,000
Senior Credit Facility Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, face amount																		24,000,000
Senior Credit Facility Agreement | Loans Payable
Debt Instrument [Line Items]
Debt instrument, face amount																		25,000,000
Debt instrument, periodic payment, principal																		$ 900,000

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Debt - Summary of Additional Margin and Commitment Fees Payable (Details)	6 Months Ended
	Jun. 30, 2020
Level I
Debt Instrument [Line Items]
Line of credit facility, commitment fee percentage	0.50%
Level I | Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	3.00%
Level I | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	4.00%
Level II
Debt Instrument [Line Items]
Line of credit facility, commitment fee percentage	0.50%
Level II | Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.75%
Level II | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	3.75%
Level III
Debt Instrument [Line Items]
Line of credit facility, commitment fee percentage	0.50%
Level III | Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.50%
Level III | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	3.50%
Level IV
Debt Instrument [Line Items]
Line of credit facility, commitment fee percentage	0.50%
Level IV | Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.25%
Level IV | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	3.25%
Maximum | Level II
Debt Instrument [Line Items]
Senior leverage ratio	250.00%
Maximum | Level III
Debt Instrument [Line Items]
Senior leverage ratio	200.00%
Maximum | Level IV
Debt Instrument [Line Items]
Senior leverage ratio	150.00%
Minimum | Level I
Debt Instrument [Line Items]
Senior leverage ratio	250.00%
Minimum | Level II
Debt Instrument [Line Items]
Senior leverage ratio	200.00%
Minimum | Level III
Debt Instrument [Line Items]
Senior leverage ratio	150.00%

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Equity (Details) - USD ($)				6 Months Ended	12 Months Ended
	Jul. 14, 2020	Jan. 01, 2020	Jul. 21, 2014	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019	Jul. 15, 2014
Class of Stock [Line Items]
Common stock, shares authorized (in shares)				100,000,000	100,000,000
Common stock, par or stated value per share (in usd per share)				$ 0.0001	$ 0.0001
Preferred stock, shares authorized (in shares)				1,000,000
Preferred stock, par or stated value per share (in usd per shares)				$ 0.0001
Class of warrant or right, outstanding (in shares)				4,576,799	4,576,799
Class of warrant or right, exercise price of warrants or rights (in usd per share)						$ 11.50
UPOs
Class of Stock [Line Items]
UPOs issued (in shares)			300,000
Outstanding UPOs (in shares)						17,100
Performance-Based RSUs
Class of Stock [Line Items]
Granted, awards (in shares)				96,500
Performance-Based RSUs | 2016 Omnibus Incentive Plan
Class of Stock [Line Items]
Granted, awards (in shares)				96,500
Performance-Based RSUs | Omnibus Incentive Plan 2019
Class of Stock [Line Items]
Granted, awards (in shares)				96,500
RSU | 2016 Omnibus Incentive Plan
Class of Stock [Line Items]
Granted, awards (in shares)				118,633
RSU | Omnibus Incentive Plan 2019 | Subsequent Event
Class of Stock [Line Items]
Share-based compensation arrangement by share-based payment award, number of additional shares authorized (in shares)	500,000
Common stock, capital shares reserved for future issuance (in shares)	1,650,000
Employee Stock | 2019 Employee Stock Purchase Plan
Class of Stock [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares authorized (in shares)		500,000
ESPP purchase price of common stock, percent of market price		85.00%
Maximum participant contribution rate		10.00%
Maximum contribution amount		$ 5,000
Offering period		6 months
ESPP discount percentage from market price, beginning of purchase period		15.00%
Share-based compensation arrangement by share-based payment award, vesting period		6 months
Public warrants
Class of Stock [Line Items]
Stock issued during period, value, new issues				$ 4,600,000	$ 4,600,000
Class of warrant or right, exercise price of warrants or rights (in usd per share)				$ 11.5	$ 11.50
Sponsor Warrants
Class of Stock [Line Items]
Class of warrant or right, outstanding (in shares)				198,000	198,000
Class of warrant or right, rights for half share (usd per share)				$ 5.75	$ 5.75
Class of warrant or right, exercise price of warrants or rights (in usd per share)				$ 11.5	$ 11.50
Fifteen Dollar Exercise Price Warrants
Class of Stock [Line Items]
Class of warrant or right, outstanding (in shares)				600,000	600,000
Class of warrant or right, exercise price of warrants or rights (in usd per share)				$ 15	$ 15.00		$ 15
Merger Warrants
Class of Stock [Line Items]
Class of warrant or right, outstanding (in shares)				631,119	631,119
Class of warrant or right, exercise price of warrants or rights (in usd per share)				$ 12.5	$ 12.50
Additional Merger Warrants
Class of Stock [Line Items]
Class of warrant or right, outstanding (in shares)				946,680	946,680
Class of warrant or right, exercise price of warrants or rights (in usd per share)				$ 11.5	$ 11.50

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Fair Value Measurements - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	$ 41,000	$ 41,000
Class of warrant or right, exercise price of warrants or rights (in usd per share)			$ 11.50
2019 Refinancing Agreement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Class of warrant or right, number of securities called by each warrant or right (in shares)	263,314	263,314
Class of warrant or right, exercise price of warrants or rights (in usd per share)	$ 7.63	$ 7.63
Refinancing Term Loan 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	$ 41,000	$ 41,000

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Fair Value Measurements Fair Value Measurements - Fair Value Assumptions Using Black-Scholes-Merton Option Pricing Model (Details) - Valuation Technique, Option Pricing Model	Jun. 30, 2020
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Time until expiration (years)	3 years 9 months 15 days
Stock price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant liabilities, measurement inputs	3.70
Exercise price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant liabilities, measurement inputs	7.63
Expected volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant liabilities, measurement inputs	0.700
Risk-free interest rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant liabilities, measurement inputs	0.003
Expected dividend yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant liabilities, measurement inputs	0.00

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Earnings per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
EPS numerator:
Net income (loss)	$ 2,947	$ (52)	$ (1,289)	$ 1,847	$ 2,895	$ 559
EPS denominator:
Weighted average shares outstanding - basic (in shares)	7,845,515		7,643,133		7,821,594	7,643,133
Impact of dilutive securities (in shares)	59,000		0		56,000	74,000
Weighted average shares outstanding - diluted (in shares)	7,905,368		7,643,133		7,878,246	7,717,484
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	4,586,936		4,742,941		4,578,054	4,607,026
EPS:
Basic (in usd per share)	$ 0.38		$ (0.17)		$ 0.37	$ 0.07
Diluted (in usd per share)	$ 0.37		$ (0.17)		$ 0.37	$ 0.07

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Earnings per Share - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	4,586,936	4,742,941	4,578,054	4,607,026
Out-of-the money warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	4,576,799	4,576,799	4,576,799	4,576,799
Service-Based RSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	463	138,782	1,255	2,867
Performance and market-based RSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	9,674	0	0	0
Out-of-the money UPOs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	0	27,360	0	27,360

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Income Taxes - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Mar. 27, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Valuation allowance	$ 0		$ 0			$ 0
Unrecognized tax benefits, accrued interest and penalties	$ 500,000		$ 500,000			$ 400,000
Effective tax expense (benefit) rate	27.40%	26.90%	14.10%	31.80%
NOLs carryback under the CARES Act					$ 1,600,000

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Operating Segments Operating Segments - Additional Information (Details)	6 Months Ended
	Jun. 30, 2020 segment
Segment Reporting Information [Line Items]
Number of operating segments	2
Construction
Segment Reporting Information [Line Items]
Number of reportable segments	1
Service
Segment Reporting Information [Line Items]
Number of reportable segments	1

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Operating Segments - Condensed Consolidated Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Revenue	$ 135,185	$ 132,603	$ 273,957	$ 266,350
Gross profit	20,335	17,695	38,559	37,319
Selling, general and administrative expenses	13,752	17,079	30,552	33,124
Amortization of intangibles	274	175	417	350
Operating income	6,309	441	7,590	3,845
Interest expense, net	(2,137)	(1,597)	(4,295)	(2,430)
Gain (loss) on sale of property and equipment	(13)	9	17	21
Loss on debt extinguishment	0	(513)	0	(513)
Gain (loss) on change in fair value of warrant liability	(102)	(103)	59	(103)
Total unallocated amounts	(2,252)	(2,204)	(4,219)	(3,025)
Income (loss) before income taxes	4,057	(1,763)	3,371	820
Depreciation and amortization	1,636	1,460	3,140	2,873
Construction
Segment Reporting Information [Line Items]
Revenue		104,759		209,219
Service
Segment Reporting Information [Line Items]
Revenue		27,844		57,131
Operating Segments | Construction
Segment Reporting Information [Line Items]
Revenue	105,937	104,759	215,423	209,219
Gross profit	12,213	10,683	23,195	23,599
Selling, general and administrative expenses	8,024	11,229	18,200	21,681
Depreciation and amortization	1,032	1,003	2,062	1,976
Operating Segments | Service
Segment Reporting Information [Line Items]
Revenue	29,248	27,844	58,534	57,131
Gross profit	8,122	7,012	15,364	13,720
Selling, general and administrative expenses	5,588	5,335	11,917	10,561
Depreciation and amortization	330	282	661	547
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Selling, general and administrative expenses	140	515	435	882
Depreciation and amortization	$ 274	$ 175	$ 417	$ 350

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Leases - Supplemental Balance Sheets Information (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Leases [Abstract]
Operating lease right-of-use assets	$ 19,616	$ 21,056	$ 22,685
Property, plant and equipment, net	6,088	6,412
Lease right-of-use assets	25,704	27,468
Current operating lease liabilities	3,681	3,750	3,824
Current portion of long-term debt	2,414	2,424
Long-term operating lease liabilities	16,502	18,247	$ 19,656
Long-term debt	3,871	4,161
Total lease liabilities	26,468	28,582
Operating lease, accumulated amortization	9,900	8,500
Finance lease, accumulated amortization	$ 4,900	$ 4,700

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Leases - Summary of Lease Costs (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Lessee, Lease, Description [Line Items]
Finance lease cost, amortization	$ 645,000	$ 613,000	$ 1,311,000	$ 1,183,000
Finance lease cost, interest expense	86,000	79,000	179,000	154,000
Total lease cost	2,000,000	1,891,000	4,024,000	3,675,000
Cost of revenue
Lessee, Lease, Description [Line Items]
Operating lease cost	893,000	853,000	1,777,000	1,667,000
Cost of revenue | Operating Lease
Lessee, Lease, Description [Line Items]
Variable lease costs	100,000	200,000	400,000	400,000
Cost of revenue | Finance Lease
Lessee, Lease, Description [Line Items]
Variable lease costs	500,000	700,000	1,200,000	1,400,000
Selling, general and administrative expenses
Lessee, Lease, Description [Line Items]
Operating lease cost	376,000	346,000	757,000	671,000
Selling, general and administrative expenses | Operating Lease
Lessee, Lease, Description [Line Items]
Variable lease costs	100,000	100,000	$ 100,000	$ 100,000
Selling, general and administrative expenses | Finance Lease
Lessee, Lease, Description [Line Items]
Variable lease costs	$ 0	$ 0

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Leases - Future Minimum Lease Commitment (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Finance Leases
Remainder of 2020	$ 1,429
2021	2,426
2022	1,898
2023	902
2024	162
Thereafter	1
Total minimum lease payments	6,818
Amounts representing interest	(533)
Present value of net minimum lease payments	6,285	$ 6,585
Operating Leases
Remainder of 2020	2,294
2021	4,565
2022	4,305
2023	3,303
2024	2,701
Thereafter	6,169
Total minimum lease payments	$ 23,337

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Leases - Summary of Lease Terms and Discount Rates (Details)	Jun. 30, 2020	Dec. 31, 2019
Leases [Abstract]
Operating leases, weighted average remaining lease term	5 years 11 months 5 days	6 years 2 months 12 days
Finance leases, weighted average remaining lease term	2 years 9 months 29 days	2 years 11 months 16 days
Operating leases, weighted average remaining discount rate	4.81%	4.80%
Finance leases, weighted average remaining discount rate	5.64%	5.69%

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Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Leases [Abstract]
Operating cash flows from operating leases	$ 2,910	$ 2,273
Operating cash flows from finance leases	179	154
Financing cash flows from finance leases	1,285	1,140
Right of use assets obtained in exchange for new operating lease liabilities	0	3,022
Right of use assets obtained in exchange for new finance lease liabilities	1,050	1,630
Right-of-use assets disposed or adjusted modifying operating leases liabilities	586	1,651
Right-of-use assets disposed or adjusted modifying finance leases liabilities	$ (64)	$ 0

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Self-Insurance - Additional Information (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2020 USD ($)
Insurance [Abstract]
Payment to acquire workers' compensation and general liability insurance	$ 250
Malpractice insurance, annual coverage limit	$ 4,600

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Self-Insurance - Components of Self-Insurance (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Insurance [Abstract]
Current liability — workers’ compensation and general liability	$ 514	$ 703
Current liability — medical and dental	511	821
Non-current liability	452	382
Total liability shown in Accrued expenses and other current liabilities	1,477	1,906
Restricted cash	$ 113	$ 113

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Commitments and Contingencies (Details) - USD ($) $ in Thousands	Apr. 17, 2020	Jan. 23, 2020	Nov. 13, 2019	Oct. 12, 2018	Jun. 30, 2020	Dec. 31, 2019	Dec. 31, 2018
Loss Contingencies [Line Items]
Litigation settlement, amount awarded to other party				$ 30,000
Other current assets liabilities							$ 30,000
Long-term debt					$ 41,000	$ 41,000
Surety Bond
Loss Contingencies [Line Items]
Long-term debt					$ 128,600
Bernards Bros vs. Limbach Holdings | Pending Litigation
Loss Contingencies [Line Items]
Loss contingency, damages sought, value		$ 3,000
Lanzo Trenchless Technologies vs. Limbach Company LLC | Pending Litigation
Loss Contingencies [Line Items]
Loss contingency, damages sought, value			$ 400
LA Excavating, Inc. vs. Limbach Company LP [Member] | Pending Litigation
Loss Contingencies [Line Items]
Loss contingency, damages sought, value	$ 1,000

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Remaining Performance Obligations - Additional Information (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Construction
Segment Reporting Information [Line Items]
Revenue, remaining performance obligation, amount	$ 408.8	$ 504.2
Service
Segment Reporting Information [Line Items]
Revenue, remaining performance obligation, amount	$ 46.6	$ 41.9

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Remaining Performance Obligations - Remaining Performance Obligations (Details) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01	Jun. 30, 2020
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	24 months
Construction
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	56.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	6 months
Service
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	100.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	6 months

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Management Incentive Plans - Additional Information (Details) - USD ($)		3 Months Ended		6 Months Ended
	Jan. 01, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense				$ 435,000	$ 882,000
Share-based payment arrangement, nonvested award, excluding option, cost not yet recognized, amount		$ 600,000		$ 600,000
Share-based payment arrangement, nonvested award, cost not yet recognized, weighted average period				1 year 3 months 11 days
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense		100,000	$ 500,000	$ 400,000	900,000
Share-based compensation arrangement by share-based payment award, vested in period, fair value				$ 600,000	200,000
Service-Based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, awards (in shares)				118,633
Service-Based RSUs | Omnibus Incentive Plan 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, awards (in shares)				118,633
Performance-Based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, awards (in shares)				96,500
Stock-based compensation expense		100,000	$ 0	$ 100,000	$ 0
Performance-Based RSUs | Omnibus Incentive Plan 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, awards (in shares)				96,500
Employee Stock | 2019 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense		$ 17,000		$ 17,000
ESPP purchase price of common stock, percent of market price	85.00%
Maximum participant contribution rate	10.00%
Maximum contribution amount	$ 5,000
Offering period	6 months
ESPP discount percentage from market price, beginning of purchase period	15.00%
Share-based compensation arrangement by share-based payment award, vesting period	6 months
Share-based compensation arrangement by share-based payment award, number of shares authorized (in shares)	500,000

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Management Incentive Plans - Schedule of Nonvested Restricted Stock Units Activity (Details)	6 Months Ended
	Jun. 30, 2020 $ / shares shares
Service-Based RSUs
Awards
Unvested, awards (in shares) | shares	328,575
Granted, awards (in shares) | shares	118,633
Vested, awards (in shares) | shares	(167,085)
Forfeited, awards (in shares) | shares	(10,109)
Unvested, awards (in shares) | shares	270,014
Weighted-Average Grant Date Fair Value
Unvested, weighted-average grant date fair values (usd per share) | $ / shares	$ 7.83
Granted, weighted-average grant date fair values (usd per share) | $ / shares	3.48
Vested, weighted-average grant date fair values (usd per share) | $ / shares	8.95
Forfeited, weighted-average grant date fair values (usd per share) | $ / shares	6.80
Unvested, weighted-average grant date fair values (usd per share) | $ / shares	$ 5.34
Performance-Based RSUs
Awards
Unvested, awards (in shares) | shares	62,307
Granted, awards (in shares) | shares	96,500
Vested, awards (in shares) | shares	0
Forfeited, awards (in shares) | shares	(13,250)
Unvested, awards (in shares) | shares	145,557
Weighted-Average Grant Date Fair Value
Unvested, weighted-average grant date fair values (usd per share) | $ / shares	$ 12.62
Granted, weighted-average grant date fair values (usd per share) | $ / shares	3.67
Vested, weighted-average grant date fair values (usd per share) | $ / shares	0.00
Forfeited, weighted-average grant date fair values (usd per share) | $ / shares	11.31
Unvested, weighted-average grant date fair values (usd per share) | $ / shares	$ 6.80
Market-Based Awards
Awards
Unvested, awards (in shares) | shares	125,000
Granted, awards (in shares) | shares	0
Vested, awards (in shares) | shares	0
Forfeited, awards (in shares) | shares	(22,500)
Unvested, awards (in shares) | shares	102,500
Weighted-Average Grant Date Fair Value
Unvested, weighted-average grant date fair values (usd per share) | $ / shares	$ 6.58
Granted, weighted-average grant date fair values (usd per share) | $ / shares	0.00
Vested, weighted-average grant date fair values (usd per share) | $ / shares	0.00
Forfeited, weighted-average grant date fair values (usd per share) | $ / shares	6.58
Unvested, weighted-average grant date fair values (usd per share) | $ / shares	$ 6.58

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Subsequent Events (Details) - USD ($) $ in Thousands		1 Months Ended	3 Months Ended	6 Months Ended
	Jul. 14, 2020	Jul. 31, 2021	Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2019
Subsequent Event [Line Items]
Stock-based compensation expense				$ 435	$ 882
2019 Employee Stock Purchase Plan | Employee Stock
Subsequent Event [Line Items]
Stock-based compensation expense			$ 17	$ 17
Subsequent Event | Omnibus Incentive Plan 2019 | Restricted Stock Units [Member]
Subsequent Event [Line Items]
Share-based compensation arrangement by share-based payment award, number of additional shares authorized (in shares)	500,000
Common stock, capital shares reserved for future issuance (in shares)	1,650,000
Subsequent Event | 2019 Employee Stock Purchase Plan | Employee Stock
Subsequent Event [Line Items]
Common stock issued to participants (in shares)		30,825

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Label	Element	Value
Accounting Standards Update 2016-02 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (128,000)
Accounting Standards Update 2016-02 [Member] | Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (128,000)