NV5 Global (NVEE) 10-Q 11 Aug 21 2021 Q2 Quarterly report Financial data

Cover

Cover - shares	6 Months Ended
	Jul. 03, 2021	Aug. 06, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jul. 3, 2021
Document Transition Report	false
Entity File Number	001-35849
Entity Registrant Name	NV5 Global, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	45-3458017
Entity Address, Address Line One	200 South Park Road,
Entity Address, Address Line Two	Suite 350
Entity Address, City or Town	Hollywood,
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33021
City Area Code	954
Local Phone Number	495-2112
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	NVEE
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		15,381,617
Entity Central Index Key	0001532961
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Amendment Flag	false
Current Fiscal Year End Date	--01-01

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jul. 03, 2021	Jan. 02, 2021
Current assets:
Cash and cash equivalents	$ 113,023	$ 64,909
Billed receivables, net	109,122	142,705
Unbilled receivables, net	83,586	74,458
Prepaid expenses and other current assets	11,013	6,804
Total current assets	316,744	288,876
Property and equipment, net	29,444	27,011
Right-of-use lease assets, net	44,196	43,607
Intangible assets, net	175,093	174,931
Goodwill	364,562	343,796
Other assets	3,364	2,954
Total assets	933,403	881,175
Current liabilities:
Accounts payable	38,446	39,989
Accrued liabilities	47,319	45,325
Billings in excess of costs and estimated earnings on uncompleted contracts	16,805	24,962
Client deposits	706	380
Current portion of contingent consideration	3,933	1,334
Current portion of notes payable and other obligations	26,989	24,196
Total current liabilities	134,198	136,186
Contingent consideration, less current portion	1,374	1,066
Other long-term liabilities	39,762	38,737
Notes payable and other obligations, less current portion	142,347	283,326
Deferred income tax liabilities, net	29,736	27,791
Total liabilities	347,417	487,106
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.01 par value; 5,000,000 shares authorized, no shares issued and outstanding	0	0
Common stock, $0.01 par value; 45,000,000 shares authorized, 15,365,382 and 13,270,131 shares issued and outstanding as of July 3, 2021 and January 2, 2021, respectively	154	133
Additional paid-in capital	441,049	268,271
Retained earnings	144,783	125,665
Total stockholders’ equity	585,986	394,069
Total liabilities and stockholders’ equity	$ 933,403	$ 881,175

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parentheticals) - $ / shares	Jul. 03, 2021	Jan. 02, 2021
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	45,000,000	45,000,000
Common stock, shares issued (in shares)	15,365,382	13,270,131
Common stock, shares outstanding (in shares)	15,365,382	13,270,131

CONSOLIDATED STATEMENTS OF NET

CONSOLIDATED STATEMENTS OF NET INCOME AND COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Income Statement [Abstract]
Gross revenues	$ 179,503	$ 162,689	$ 332,598	$ 328,169
Direct costs:
Salaries and wages	45,025	45,079	86,485	90,114
Sub-consultant services	29,978	25,244	53,225	52,670
Other direct costs	13,114	8,914	22,912	17,402
Total direct costs	88,117	79,237	162,622	160,186
Gross profit	91,386	83,452	169,976	167,983
Operating expenses:
Salaries and wages, payroll taxes and benefits	44,213	44,149	87,164	89,706
General and administrative	13,367	11,824	24,915	24,980
Facilities and facilities related	5,038	5,357	10,135	10,754
Depreciation and amortization	10,216	11,160	19,656	22,200
Total operating expenses	72,834	72,490	141,870	147,640
Income from operations	18,552	10,962	28,106	20,343
Interest expense	(1,568)	(4,403)	(3,886)	(8,190)
Income before income tax expense	16,984	6,559	24,220	12,153
Income tax expense	(3,346)	(2,056)	(5,102)	(3,462)
Net income and comprehensive income	$ 13,638	$ 4,503	$ 19,118	$ 8,691
Earnings per share:
Basic (in dollars per Share)	$ 0.95	$ 0.37	$ 1.40	$ 0.71
Diluted (in dollars per Share)	$ 0.91	$ 0.36	$ 1.35	$ 0.69
Weighted average common shares outstanding:
Basic (in shares)	14,419,671	12,308,965	13,648,247	12,271,221
Diluted (in shares)	14,965,188	12,609,918	14,196,035	12,601,830

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings
Beginning Balance (in shares) at Dec. 28, 2019		12,852,357
Beginning Balance at Dec. 28, 2019	$ 355,963	$ 129	$ 251,187	$ 104,647
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	6,880		6,880
Restricted stock issuance, net (in shares)		163,835
Restricted stock issuance, net	0	$ 1	(1)
Stock issuance for acquisitions (in shares)		12,406
Stock issuance for acquisitions	558		558
Payment of contingent consideration with common stock (in shares)		5,244
Payment of contingent consideration with common stock	278		278
Net income	8,691			8,691
Ending Balance (in shares) at Jun. 27, 2020		13,033,842
Ending Balance at Jun. 27, 2020	372,370	$ 130	258,902	113,338
Beginning Balance (in shares) at Mar. 28, 2020		12,874,424
Beginning Balance at Mar. 28, 2020	364,366	$ 129	255,402	108,835
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	3,501		3,501
Restricted stock issuance, net (in shares)		159,418
Restricted stock issuance, net	0	$ 1	(1)
Stock issuance for acquisitions	0
Net income	4,503			4,503
Ending Balance (in shares) at Jun. 27, 2020		13,033,842
Ending Balance at Jun. 27, 2020	372,370	$ 130	258,902	113,338
Beginning Balance (in shares) at Jan. 02, 2021		13,270,131
Beginning Balance at Jan. 02, 2021	394,069	$ 133	268,271	125,665
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	7,790		7,790
Restricted stock issuance, net (in shares)		203,056
Restricted stock issuance, net	0	$ 2	(2)
Purchases of common stock tendered by employees to satisfy the required withholding taxes related to stock-based compensation (in shares)		(580)
Purchases of common stock tendered by employees to satisfy the required withholding taxes related to stock-based compensation	(52)		(52)
Stock issuance for acquisitions (in shares)		35,737
Stock issuance for acquisitions	3,060		3,060
Proceeds from pubic offering, net of costs (in shares)		1,854,838
Proceeds from secondary offering, net of costs	161,792	$ 19	161,773
Payment of contingent consideration with common stock (in shares)		2,200
Payment of contingent consideration with common stock	209		209
Net income	19,118			19,118
Ending Balance (in shares) at Jul. 03, 2021		15,365,382
Ending Balance at Jul. 03, 2021	585,986	$ 154	441,049	144,783
Beginning Balance (in shares) at Apr. 03, 2021		14,933,927
Beginning Balance at Apr. 03, 2021	547,189	$ 149	415,895	131,145
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	4,094		4,094
Restricted stock issuance, net (in shares)		189,520
Restricted stock issuance, net	0	$ 2	(2)
Stock issuance for acquisitions	(85)		(85)
Proceeds from pubic offering, net of costs (in shares)		241,935
Proceeds from secondary offering, net of costs	21,150	$ 3	21,147
Net income	13,638			13,638
Ending Balance (in shares) at Jul. 03, 2021		15,365,382
Ending Balance at Jul. 03, 2021	$ 585,986	$ 154	$ 441,049	$ 144,783

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020
Cash flows from operating activities:
Net income	$ 19,118	$ 8,691
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	21,936	23,277
Non-cash lease expense	4,884	4,307
Provision for doubtful accounts	583	1,690
Stock-based compensation	7,790	6,880
Change in fair value of contingent consideration	235	0
Gain on disposals of property and equipment	(581)	(350)
Deferred income taxes	(2,988)	(869)
Amortization of debt issuance costs	454	442
Changes in operating assets and liabilities, net of impact of acquisitions:
Billed receivables	36,727	(1,134)
Unbilled receivables	(7,238)	(2,286)
Prepaid expenses and other assets	(4,208)	2,117
Accounts payable	(2,446)	138
Accrued liabilities	(4,187)	1,922
Income taxes payable	0	613
Billings in excess of costs and estimated earnings on uncompleted contracts	(8,158)	5,241
Deposits	307	66
Net cash provided by operating activities	62,228	50,745
Cash flows from investing activities:
Cash paid for acquisitions (net of cash received from acquisitions)	(21,652)	0
Proceeds from sale of assets	460	437
Purchase of property and equipment	(4,028)	(6,145)
Net cash used in investing activities	(25,220)	(5,708)
Cash flows from financing activities:
Proceeds from common stock offering	172,500	0
Payments on notes payable	(5,325)	(8,415)
Payments of contingent consideration	(413)	(913)
Payments of borrowings from Senior Credit Facility	(145,082)	(1,875)
Payments of common stock offering costs	(10,522)	0
Purchases of common stock tendered by employees to satisfy the required withholding taxes related to stock-based compensation	(52)	0
Payments of debt issuance costs	0	(447)
Net cash provided by (used in) financing activities	11,106	(11,650)
Net increase in cash and cash equivalents	48,114	33,387
Cash and cash equivalents – beginning of period	64,909	31,825
Cash and cash equivalents – end of period	113,023	65,212
Non-cash investing and financing activities:
Contingent consideration (earn-out)	3,294	0
Notes payable and other obligations issued for acquisitions	11,174	0
Stock issuance for acquisitions	3,060	558
Accrued common stock offering costs	186	0
Finance leases	248	409
Payment of contingent consideration with common stock	$ 209	$ 278

Organization and Nature of Busi

Organization and Nature of Business Operations	6 Months Ended
	Jul. 03, 2021
Accounting Policies [Abstract]
Organization and Nature of Business Operations	Organization and Nature of Business Operations Business NV5 Global, Inc. and its subsidiaries (collectively, the “Company,” or “NV5 Global”) is a provider of professional and technical engineering and consulting solutions to public and private sector clients in the infrastructure, utility services, construction, real estate, and environmental markets, operating nationwide and abroad. The Company’s clients include the U.S. federal, state and local governments, and the private sector. NV5 Global provides a wide range of services, including, but not limited to: ● Utility services ● MEP & technology engineering ● LNG services ● Commissioning ● Engineering ● Program management ● Civil program management ● Environmental health & safety ● Surveying ● Real estate transaction services ● Testing, inspection & consulting (TIC) ● Energy efficiency services ● Code compliance consulting ● 3D geospatial data modeling ● Forensic engineering ● Environmental & natural resources ● Litigation support ● Robotic survey solutions ● Ecological studies ● Geospatial data applications & software Fiscal Year The Company operates on a "52/53 week" fiscal year ending on the Saturday closest to the calendar quarter end, and fiscal 2021 contains 52 weeks compared to fiscal 2020, which contained 53 weeks. Impact of COVID-19 on Our Business The COVID-19 pandemic has significantly impacted global stock markets and economies. The Company is closely monitoring the impact of the outbreak of COVID-19 on all aspects of its business, including how it will impact the Company's customers and employees. Some of the Company's services were affected, primarily its Geospatial segment, real estate transactional services and hospitality-related services. In particular, due to COVID-19 restrictions, some of the Company's casino and hotel projects have been delayed. As U.S. and international economies begin to reopen and with a vaccine underway, real estate transactional services have recovered, however the Company is unable to predict the ultimate impact that it may have on its business, future results of operations, financial position, or cash flows. The extent to which the Company's operations may be impacted by the COVID-19 pandemic will depend largely on future developments, which are highly uncertain and cannot be accurately predicted, including new information which may emerge concerning the severity of the outbreak and actions by government authorities to contain the outbreak or treat its impact. The Company intends to continue to monitor the impact of COVID-19 pandemic on its business closely.

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jul. 03, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation and Principles of Consolidation The consolidated financial statements of the Company are presented in U.S. dollars in conformity with accounting principles generally accepted in the United States (“U.S. GAAP”) and have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”) for reporting of interim financial information. Pursuant to such rules and regulations, certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted. The consolidated financial statements include the accounts of the Company and its subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. In the opinion of management, the accompanying unaudited interim consolidated financial statements of the Company contain all adjustments necessary to present fairly the financial position and results of operations of the Company as of the dates and for the periods presented. Accordingly, these statements should be read in conjunction with the consolidated financial statements and notes contained in the Company’s Annual Report on Form 10-K for the year ended January 2, 2021 (the “2020 Form 10-K”). The results of operations and cash flows for the interim periods presented are not necessarily indicative of the results to be expected for any future interim period or for the full 2021 fiscal year. Performance Obligations To determine the proper revenue recognition method, the Company evaluates whether two or more contracts should be combined and accounted for as one single contract and whether the combined or single contract should be accounted for as more than one performance obligation. The majority of the Company's contracts have a single performance obligation as the promise to transfer the individual goods or services that is not separately identifiable from other promises in the contracts and therefore, is not distinct. The Company’s performance obligations are satisfied as work progresses or at a point in time. Revenue on the Company's cost-reimbursable contracts is recognized over time using direct costs incurred or direct costs incurred to date as compared to the estimated total direct costs for performance obligations because it depicts the transfer of control to the customer. Contract costs include labor, sub-consultant services, and other direct costs. Gross revenue from services transferred to customers at a point in time is recognized when the customer obtains control of the asset, which is generally upon delivery and acceptance by the customer of the reports and/or analysis performed. As of July 3, 2021, the Company had $678,715 of remaining performance obligations, of which $544,001 is expected to be recognized over the next 12 months and the majority of the balance over the next 24 months. Contracts for which work authorizations have been received are included in performance obligations. Most of the Company's government contracts are multi-year contracts for which funding is appropriated on an annual basis, therefore performance obligations include only those amounts that have been funded and authorized and does not reflect the full amounts the Company may receive over the term of such contracts. In the case of non-government contracts and project awards, performance obligations include future revenue at contract or customary rates, excluding contract renewals or extensions that are at the discretion of the client. For contracts with a not-to-exceed maximum amount, the Company includes revenue from such contracts in performance obligations to the extent of the remaining estimated amount. Contract Balances The timing of revenue recognition, billings and cash collections results in billed receivables, unbilled receivables (contract assets), and billings in excess of costs and estimated earnings on uncompleted contracts (contract liabilities) on the Consolidated Balance Sheet. The liability “Billings in excess of costs and estimated earnings on uncompleted contracts” represents billings in excess of revenues recognized on these contracts as of the reporting date. This liability is generally classified as current. Revenue recognized that was included in the contract liability balance at the beginning of the fiscal year was $4,742 and $23,358 for the three and six months ended July 3, 2021. Goodwill and Intangible Assets Goodwill is the excess of consideration paid for an acquired entity over the amounts assigned to assets acquired, including other identifiable intangible assets and liabilities assumed in a business combination. To determine the amount of goodwill resulting from a business combination, the Company performs an assessment to determine the acquisition date fair value of the acquired company’s tangible and identifiable intangible assets and liabilities. Goodwill is required to be evaluated for impairment on an annual basis or whenever events or changes in circumstances indicate the asset may be impaired. An entity has the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. These qualitative factors include: macroeconomic and industry conditions, cost factors, overall financial performance and other relevant entity-specific events. If the entity determines that this threshold is met, then the Company may apply a one-step quantitative test and record the amount of goodwill impairment as the excess of a reporting unit's carrying amount over its fair value, not to exceed the total amount of goodwill allocated to the reporting unit. The Company determines fair value through multiple valuation techniques, and weights the results accordingly. NV5 Global is required to make certain subjective and complex judgments in assessing whether an event of impairment of goodwill has occurred, including assumptions and estimates used to determine the fair value of its reporting units. The Company has elected to perform its annual goodwill impairment review as of August 1 of each year. The Company conducts its annual impairment tests on the goodwill using the quantitative method of evaluating goodwill. As of August 1, 2020, the Company conducted its annual impairment tests using the quantitative method of evaluating goodwill. Based on the quantitative analyses the Company determined the fair value of each of the reporting units exceeded its carrying value. Therefore, the goodwill was not impaired and the Company did not recognize an impairment charge relating to goodwill as of August 1, 2020. Furthermore, there were no indicators, events or changes in circumstances that would indicate goodwill was impaired during the period from August 2, 2020 through July 3, 2021. Identifiable intangible assets primarily include customer backlog, customer relationships, trade names, non-compete agreements, and developed technology. Amortizable intangible assets are amortized on a straight-line basis over their estimated useful lives and reviewed for impairment whenever events or changes in circumstances indicate that the assets may be impaired. If an indicator of impairment exists, the Company compares the estimated future cash flows of the asset, on an undiscounted basis, to the carrying value of the asset. If the undiscounted cash flows exceed the carrying value, no impairment is indicated. If the undiscounted cash flows do not exceed the carrying value, then impairment, if any, is measured as the difference between fair value and carrying value, with fair value typically based on a discounted cash flow model. There were no indicators, events or changes in circumstances that would indicate intangible assets were impaired during the six months ended July 3, 2021. See Note 8, Goodwill and Intangible Assets , for further information on goodwill and identified intangibles.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	6 Months Ended
	Jul. 03, 2021
Accounting Standards Update and Change in Accounting Principle [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848)

Earnings per Share

Earnings per Share	6 Months Ended
	Jul. 03, 2021
Earnings Per Share [Abstract]
Earnings per Share	Earnings per Share Basic earnings per share is calculated by dividing net income by the weighted average number of common shares outstanding during the period, excluding unvested restricted shares. Diluted earnings per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in the earnings of the Company. The effect of potentially dilutive securities is not considered during periods of loss or if the effect is anti-dilutive. The weighted average number of shares outstanding in calculating basic earnings per share for the six months ended July 3, 2021 and June 27, 2020 exclude 830,182 and 612,827 non-vested restricted shares, respectively. During the three and six months ended July 3, 2021, there were 16,894 and 11,805 weighted average securities which are not included in the calculation of diluted weighted average shares outstanding because their impact is anti-dilutive or their performance conditions have not been met. During the three and six months ended June 27, 2020, there were 180,554 and 177,029 weighted average securities which are not included in the calculation of diluted weighted average shares outstanding because their impact is anti-dilutive. The following table represents a reconciliation of the net income and weighted average shares outstanding for the calculation of basic and diluted earnings per share: Three Months Ended Six Months Ended July 3, 2021 June 27, 2020 July 3, 2021 June 27, 2020 Numerator: Net income – basic and diluted $ 13,638 $ 4,503 $ 19,118 $ 8,691 Denominator: Basic weighted average shares outstanding 14,419,671 12,308,965 13,648,247 12,271,221 Effect of dilutive non-vested restricted shares and units 515,913 245,282 520,824 271,618 Effect of issuable shares related to acquisitions 29,604 55,671 26,964 58,991 Diluted weighted average shares outstanding 14,965,188 12,609,918 14,196,035 12,601,830 Secondary Offering

Business Acquisitions

Business Acquisitions	6 Months Ended
	Jul. 03, 2021
Business Combination and Asset Acquisition [Abstract]
Business Acquisitions	Business Acquisitions 2021 Acquisitions On February 9, 2021 ("IDA Closing Date"), the Company acquired all of the outstanding equity interests in Industrial Design Associates International, Industrial Design Associates International PTE LTD., and IDA Engineering Private Limited (collectively "IDA"), an international engineering services consulting company that provides building commissioning and MEP design services to clients throughout Asia. The aggregate purchase price is $2,955, including $1,975 of cash and a $980 promissory note, payable in two equal installments due on each of the sixth month and twelve month anniversaries of the IDA Closing Date. In order to determine the fair values of tangible and intangible assets acquired and liabilities assumed for IDA, the Company engaged a third-party independent valuation specialist to assist in the determination of fair values. The final determination of the fair value of assets and liabilities will be completed within the one-year measurement period as required by ASC Topic 805, Business Combinations ("ASC 805"). The IDA acquisition will necessitate the use of this measurement period to adequately analyze and assess the factors used in establishing the asset and liability fair values as of the acquisition date, including intangible assets, accounts receivable, and certain fixed assets. On February 22, 2021 ("TerraTech Closing Date"), the Company acquired all of the outstanding equity interests in TerraTech Engineers, Inc. ("TerraTech"), a geotechnical engineering, environmental consulting, and materials testing company headquartered in North Carolina. The aggregate purchase price is $7,514, including $3,000 of cash, a $3,200 promissory note (bearing interest at 2.75%), payable in five equal installments of $640 due on the first, second, third, fourth and fifth anniversaries of the TerraTech Closing Date, and $450 of the Company's common stock (5,204 shares) issued at the closing date. The purchase price also includes $864 of the Company's common stock payable in two equal installments due on the first and second anniversaries of the TerraTech Closing Date. In order to determine the fair values of tangible and intangible assets acquired and liabilities assumed for TerraTech, the Company engaged a third-party independent valuation specialist to assist in the determination of fair values. The final determination of the fair value of assets and liabilities will be completed within the one-year measurement period as required by ASC 805. The TerraTech acquisition will necessitate the use of this measurement period to adequately analyze and assess the factors used in establishing the asset and liability fair values as of the acquisition date, including intangible assets, accounts receivable, and certain fixed assets. On March 25, 2021 ("Geodynamics Closing Date"), the Company acquired all of the outstanding equity interests in Geodynamics LLC ("Geodynamics"), a provider of sonar-based, deep-water geospatial solutions. The aggregate purchase price is $19,879, including $11,000 of cash, a $4,000 promissory note (bearing interest at 2.75%), payable in three equal installments of $1,333 due on the first, second, and third anniversaries of the Geodynamics Closing Date, and $2,610 of the Company's common stock (30,533 shares) issued at the closing date. The purchase price also includes a potential $21,000 earn-out of cash, which was recorded at an estimated fair value of $2,269. An option based model was used to determine the fair value of the earn-out, which is a generally accepted valuation technique that embodies all significant assumption types. In order to determine the fair values of tangible and intangible assets acquired and liabilities assumed for Geodynamics, the Company engaged an independent third-party valuation specialist to assist in the determination of fair values. The final determination of the fair value of assets and liabilities will be completed within the one-year measurement period as required by ASC 805. The Geodynamics acquisition will necessitate the use of this measurement period to adequately analyze and assess the factors used in establishing the asset and liability fair values as of the acquisition date, including intangible assets, accounts receivable, and certain fixed assets. On May 14, 2021 ("PES Environmental Closing Date"), the Company acquired all of the outstanding equity interests in PES Environmental, Inc. ("PES Environmental"), an environmental engineering and consulting company providing environmental site assessment, water resources and stormwater management, permitting and compliance, industrial hygiene, and litigation support services. The aggregate purchase price is $9,655, including $6,500 of cash, a $1,500 promissory note (bearing interest at 2.75%), payable in three equal installments due on the first, second, and third anniversaries of the PES Environmental Closing Date, and $630 of the Company's common stock (7,847 shares) issuable within 90 days of the PES Environmental Closing Date. The purchase price also includes a potential non-interest bearing earn-out of up to $1,100 payable in cash and stock, which was recorded at an estimated fair value of $1,025. An option based model was used to determine the fair value of the earn-out, which is a generally accepted valuation technique that embodies all significant assumption types. In order to determine the fair values of tangible and intangible assets acquired and liabilities assumed for PES Environmental, the Company engaged an independent third-party valuation specialist to assist in the determination of fair values. The final determination of the fair value of assets and liabilities will be completed within the one-year measurement period as required by ASC 805. The PES Environmental acquisition will necessitate the use of this measurement period to adequately analyze and assess the factors used in establishing the asset and liability fair values as of the acquisition date, including intangible assets, accounts receivable, and certain fixed assets. 2020 Acquisitions On July 16, 2020, the Company acquired all of the outstanding equity interests in Mediatech FZ, LLC and Mediatech Information Technology Consultants ("Mediatech"), a technology company providing security, enterprise IT, and building technology solutions in the Middle East and North Africa (MENA) region and South East Asia. Mediatech provides technology design services for the hospitality, industrial, healthcare, commercial, retail, and convention center markets. The Company acquired Mediatech for an aggregate purchase price of $1,949, including $882 of cash and $500 in promissory note, payable in four equal installments of $125 due on the first, second, third, and fourth anniversaries of the closing date. The purchase price also includes $312 of the Company's common stock payable in four equal installments due at closing and on the first, second and third anniversaries of the closing date. Further, the purchase price includes $255 in additional contingent payments. In order to determine the fair values of tangible and intangible assets acquired and liabilities assumed for Mediatech, the Company performed a fair value assessment. The following table summarizes the fair values of the assets acquired and liabilities assumed as of the acquisition date for the acquisitions closed during the six months ended July 3, 2021 and the fiscal year ended January 2, 2021: Six Months Ended Fiscal Year Ended July 3, 2021 January 2, 2021 Cash $ 823 $ — Billed and unbilled receivables, net 5,631 1,439 Right-of-use assets 2,329 — Property and equipment 3,475 28 Prepaid expenses 392 33 Other assets 6 28 Intangible assets: Customer relationships 11,709 237 Trade name 703 30 Customer backlog 1,547 56 Non-compete 2,715 5 Total Assets $ 29,330 $ 1,856 Liabilities (5,155) (345) Deferred tax liabilities (4,852) (86) Net assets acquired $ 19,323 $ 1,425 Consideration paid (Cash, Notes and/or stock) $ 36,709 $ 1,694 Contingent earn-out liability (Cash and stock) 3,294 255 Total Consideration $ 40,003 $ 1,949 Excess consideration over the amounts assigned to the net assets acquired (Goodwill) $ 20,680 $ 524 Goodwill was recorded based on the amount by which the purchase price exceeded the fair value of the net assets acquired and the amount is attributable to the reputation of the business acquired, the workforce in place and the synergies to be achieved from these acquisitions. See Note 8, Goodwill and Intangible Assets , for further information on fair value adjustments to goodwill and identified intangibles. The consolidated financial statements of the Company include the results of operations from any business acquired from their respective dates of acquisition. The following table presents the results of operations of businesses acquired from their respective dates of acquisition for the three and six months ended July 3, 2021. Three Months Ended Six Months Ended July 3, 2021 July 3, 2021 Gross revenues $ 8,529 $ 9,981 Income before income taxes $ 2,795 $ 3,288 The following table presents the unaudited, pro forma consolidated results of operations (in thousands, except per share amounts) for the three and six months ended July 3, 2021 and June 27, 2020 as if the acquisitions of TerraTech, GeoDynamics, and PES Environmental had occurred at the beginning of fiscal year 2020. The pro forma information provided below is compiled from the pre-acquisition financial information of TerraTech, GeoDynamics, and PES Environmental and includes pro forma adjustments for amortization expense, adjustments to certain expenses, and the income tax impact of these adjustments. The pro forma results are not necessarily indicative of (i) the results of operations that would have occurred had the operations of these acquisitions actually been acquired at the beginning of fiscal year 2020 or (ii) future results of operations: Three Months Ended Six Months Ended July 3, 2021 June 27, 2020 July 3, 2021 June 27, 2020 Gross revenues $ 180,954 $ 168,656 $ 339,947 $ 341,214 Net income $ 13,551 $ 4,484 $ 19,299 $ 8,974 Basic earnings per share $ 0.94 $ 0.36 $ 1.41 $ 0.73 Diluted earnings per share $ 0.91 $ 0.35 $ 1.36 $ 0.71

Billed and Unbilled Receivables

Billed and Unbilled Receivables	6 Months Ended
	Jul. 03, 2021
Receivables [Abstract]
Billed and Unbilled Receivables	Billed and Unbilled Receivables Billed and Unbilled Receivables consists of the following: July 3, 2021 January 2, 2021 Billed receivables $ 114,779 $ 149,233 Less: allowance for doubtful accounts (5,657) (6,528) Billed receivables, net $ 109,122 $ 142,705 Unbilled receivables $ 85,996 $ 76,609 Less: allowance for doubtful accounts (2,410) (2,151) Unbilled receivables, net $ 83,586 $ 74,458

Property and Equipment, net

Property and Equipment, net	6 Months Ended
	Jul. 03, 2021
Property, Plant and Equipment [Abstract]
Property and Equipment, net	Property and Equipment, net Property and equipment, net, consists of the following: July 3, 2021 January 2, 2021 Office furniture and equipment $ 3,845 $ 3,782 Computer equipment 16,648 15,597 Survey and field equipment 27,143 22,866 Leasehold improvements 6,406 6,322 Total 54,042 48,567 Less: accumulated depreciation (24,598) (21,556) Property and equipment, net $ 29,444 $ 27,011

Goodwill and Intangible Assets

Goodwill and Intangible Assets	6 Months Ended
	Jul. 03, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill The changes in the carrying value by reportable segment for the six months ended July 3, 2021 were as follows: Six Months Ended January 2, 2021 2021 Acquisitions Adjustments July 3, 2021 INF $ 87,333 $ 3,392 $ — $ 90,725 BTS 78,848 5,790 86 84,724 GEO 177,615 11,498 — 189,113 Total $ 343,796 $ 20,680 $ 86 $ 364,562 During the six months ended July 3, 2021, the Company recorded goodwill related to the acquisitions of IDA, TerraTech, Geodynamics, and PES Environmental of $832, $3,392, $11,498, and $4,958, respectively, and a purchase price allocation adjustment of $86 that increased goodwill for the acquisition of Mediatech. Intangible Assets Intangible assets, net, as of July 3, 2021 and January 2, 2021 consist of the following: July 3, 2021 January 2, 2021 Gross Accumulated Amortization Net Gross Accumulated Amortization Net Finite-lived intangible assets: Customer relationships (1) $ 194,757 $ (55,536) $ 139,221 $ 183,048 $ (46,506) $ 136,542 Trade name (2) 15,220 (13,540) 1,680 14,517 (12,099) 2,418 Customer backlog (3) 26,658 (22,372) 4,286 25,111 (19,709) 5,402 Non-compete (4) 12,088 (7,920) 4,168 9,373 (6,909) 2,464 Developed technology (5) 32,944 (7,206) 25,738 32,944 (4,839) 28,105 Total finite-lived intangible assets $ 281,667 $ (106,574) $ 175,093 $ 264,993 $ (90,062) $ 174,931 (1) Amortized on a straight-line basis over estimated lives (5 to 12 years) (2) Amortized on a straight-line basis over their estimated lives (1 to 3 years) (3) Amortized on a straight-line basis over their estimated lives (1 to 5 years) (4) Amortized on a straight-line basis over their contractual lives (2 to 5 years) (5) Amortized on a straight-line basis over their estimated lives (5 to 7 years)

Accrued Liabilities

Accrued Liabilities	6 Months Ended
	Jul. 03, 2021
Payables and Accruals [Abstract]
Accrued Liabilities	Accrued Liabilities Accrued liabilities consist of the following: July 3, 2021 January 2, 2021 Current portion of lease liability $ 12,879 $ 13,161 Accrued vacation 14,542 11,998 Payroll and related taxes 11,453 10,744 Benefits 3,130 4,764 Accrued operating expenses 3,568 2,792 Professional liability reserve 902 949 Accrued interest expense 507 506 Income tax payable and other liabilities 338 411 Total $ 47,319 $ 45,325

Notes Payable and Other Obligat

Notes Payable and Other Obligations	6 Months Ended
	Jul. 03, 2021
Payables and Accruals [Abstract]
Notes Payable and Other Obligations	Notes Payable and Other Obligations Notes payable and other obligations consists of the following: July 3, 2021 January 2, 2021 Senior credit facility $ 138,750 $ 283,832 Uncollateralized promissory notes 28,374 23,175 Finance leases 2,742 2,994 Other obligations 2,645 1,151 Debt issuance costs, net of amortization (3,175) (3,630) Total notes payable and other obligations 169,336 307,522 Current portion of notes payable and other obligations 26,989 24,196 Notes payable and other obligations, less current portion $ 142,347 $ 283,326 As of July 3, 2021 and January 2, 2021, the carrying amount of debt obligations approximates their fair values based on Level 2 inputs as the terms are comparable to terms currently offered by local lending institutions for arrangements with similar terms to industry peers with comparable credit characteristics. Senior Credit Facility On December 20, 2019 (the "Closing Date"), the Company amended and restated its Credit Agreement (the "A&R Credit Agreement"), dated December 7, 2016, as amended on December 20, 2018, with Bank of America, N.A. ("Bank of America"), as administrative agent, swingline lender and letter of credit issuer, the other lenders party thereto, and certain of the Company's subsidiaries as guarantors. Pursuant to the A&R Credit Agreement, the lenders provided term commitments of $150,000 in the aggregate in a single draw on the Closing Date to fund the acquisition of QSI and various costs and expenses relating thereto and revolving commitments totaling $215,000 in the aggregate. The revolving commitment is available through December 20, 2024 (the "Maturity Date"), at which time the term commitments and revolving commitments will be due and payable in full. An aggregate amount of $320,500 was drawn under the A&R Credit Agreement on the Closing Date to fund the QSI acquisition and repay previously existing borrowings. Borrowings under the A&R Credit Agreement are secured by a first priority lien on substantially all of the assets of the Company. The A&R Credit Agreement also includes an accordion feature permitting the Company to request an increase in either the term facility or the revolver facility under the A&R Credit Agreement by an additional amount of up to $100,000 in the aggregate. Borrowings under the term facility amortize at the rate of 5.0% per annum for the first two years of the facility and thereafter at the rate of 7.5% per annum until the Maturity Date. On May 5, 2020 (the "Amendment Closing Date"), in response to the COVID-19 pandemic, the Company entered into an amendment to the A&R Credit Agreement (the "Amended A&R Credit Agreement") to amend the financial covenants that requires NV5 Global to maintain a consolidated leverage ratio (the ratio of the Company's pro forma consolidated funded indebtedness to the Company's pro forma consolidated EBITDA for the most recently completed measurement period). The amended consolidated leverage ratio requirements are as follows: Measurement Period Ending Maximum Consolidated Leverage Ratio Amendment Closing Date through June 27, 2020 4.50 to 1.00 June 28, 2020 through October 3, 2020 5.00 to 1.00 October 4, 2020 through January 2, 2021 5.25 to 1.00 January 3, 2021 and April 3, 2021 4.75 to 1.00 April 4, 2021 and July 3, 2021 4.00 to 1.00 July 4, 2021 and thereafter 3.50 to 1.00 These financial covenants also require the Company to maintain a consolidated fixed charge coverage ratio of no less than 1.20 to 1.00 as of the end of any measurement period. As of July 3, 2021, the Company was in compliance with the financial covenants. The Amended A&R Credit Agreement also amended pricing terms which remain variable and tied to a Eurocurrency rate equal to LIBOR (London Interbank Offered Rate) plus an applicable margin or a base rate denominated in U.S. dollars. Interest rates remain subject to change based on the Company's consolidated leverage ratio. As of July 3, 2021 the Company's interest rate was 2.3%. The Amended A&R Credit Agreement contains covenants that may have the effect of limiting the Company's ability to, among other things, merge with or acquire other entities, enter into a transaction resulting in a Change in Control, create certain new liens, incur certain additional indebtedness, engage in certain transactions with affiliates, or engage in new lines of business or sell a substantial part of their assets. The Amended A&R Credit Agreement also contains customary events of default, including (but not limited to) a default in the payment of principal or, following an applicable grace period, interest, breaches of the Company's covenants or warranties under the Amended A&R Credit Agreement, payment default or acceleration of certain indebtedness, certain events of bankruptcy, insolvency or liquidation, certain judgments or uninsured losses, changes in control and certain liabilities related to ERISA based plans. The Amended A&R Credit Agreement limits the payment of cash dividends (together with certain other payments that would constitute a "Restricted Payment" within the meaning of the Amended A&R Credit Agreement and generally including dividends, stock repurchases and certain other payments in respect to warrants, options, and other rights to acquire equity securities) to no more than $10,000 in any fiscal year, so long as no default shall exist at the time of or arise as a result from such payment. Total debt issuance costs incurred and capitalized in connection with the issuance of the Amended A&R Credit Agreement were $4,123. Total amortization of debt issuance costs was $227 and $454 during the three and six months ended July 3, 2021, respectively, and $222 and $442 during the three and six months ended June 27, 2020, respectively. Other Obligations On May 14, 2021, the Company acquired PES Environmental. The purchase price allowed for the payment of $630 in shares of the Company's stock payable within 90 days of the PES Environmental Closing Date. At July 3, 2021, the outstanding balance on this obligation was $630. On February 22, 2021, the Company acquired TerraTech. The purchase price allowed for the payment of $864 in shares of the Company's stock or a combination of cash and shares of the Company's stock, at its discretion, payable in two equal annual installments. At July 3, 2021, the outstanding balance on this obligation was $864. On July 16, 2020, the Company acquired Mediatech. The purchase price allowed for the payment of $230 in shares of the Company's stock or a combination of cash and shares of the Company's stock, at its discretion, payable in three equal annual installments. At July 3, 2021 and January 2, 2021, the outstanding balance on this obligation was $230. On July 1, 2019, the Company acquired GeoDesign. The purchase price allowed for the payment of $425 in shares of the Company's stock or a combination of cash and shares of the Company's stock, at its discretion, payable on the first and second anniversary of July 1, 2019. At July 3, 2021 and January 2, 2021, the outstanding balance on this obligation was $44. On November 2, 2018, the Company acquired CHI. The purchase price allowed for the payment of $3,000 in shares of the Company’s stock or a combination of cash and shares of the Company’s stock, at its discretion, payable in three equal annual installments. At July 3, 2021 and January 2, 2021, the outstanding balance of this obligation was $877. Uncollateralized Promissory Notes On May 14, 2021, the Company acquired PES Environmental. The purchase price included an uncollateralized $1,500 promissory note bearing interest at 2.75% ("PES Environmental Note") and payable in three equal annual installments. The outstanding balance of the PES Environmental Note was $1,500 as of July 3, 2021. On March 25, 2021, the Company acquired Geodynamics. The purchase price included an uncollateralized $4,000 promissory note bearing interest at 2.75% ("Geodynamics Note") and payable in three equal annual installments. The outstanding balance of the Geodynamics Note was $4,000 as of July 3, 2021. On February 22, 2021, the Company acquired TerraTech. The purchase price included an uncollateralized $3,200 promissory note bearing interest at 2.75% ("TerraTech Note") and payable in five equal annual installments. The outstanding balance of the TerraTech Note was $3,200 as of July 3, 2021. On February 9, 2021, the Company acquired IDA. The purchase price included an uncollateralized $980 promissory note ("IDA Note") payable in two equal annual installments. The outstanding balance of the IDA Note was $980 as of July 3, 2021. On July 16, 2020, the Company acquired Mediatech. The purchase price included an uncollateralized $500 promissory note ("Mediatech Note") payable in four equal annual installments. The outstanding balance of the Mediatech Note was $500 as of July 3, 2021 and January 2, 2021. On July 1, 2019, the Company acquired GeoDesign. The purchase price included an uncollateralized $2,000 promissory note bearing interest at 4.0% ("GeoDesign Note") and payable in four equal annual installments. The outstanding balance of the GeoDesign Note was $1,000 and $1,500 as of July 3, 2021 and January 2, 2021, respectively. On June 3, 2019, the Company acquired Alta. The purchase price included an uncollateralized $2,000 promissory note bearing interest at 4.0% ("Alta Note") and payable in four equal annual installments. The outstanding balance of the Alta Note was $1,000 and $1,500 as of July 3, 2021 and January 2, 2021, respectively. On June 3, 2019, the Company acquired Page One. The purchase price included an uncollateralized $1,000 promissory note bearing interest at 3.0% ("Page One Note") and payable in three equal annual installments. The outstanding balance of the Page One Note was $333 and $700 as of July 3, 2021 and January 2, 2021, respectively. On March 22, 2019, the Company acquired The Sextant Group. The purchase price included an uncollateralized $4,000 promissory note bearing interest at 4.0% ("The Sextant Group Note") and payable in four equal annual installments. The outstanding balance of The Sextant Group Note was $2,000 and $3,000 as of July 3, 2021 and January 2, 2021, respectively. On December 31, 2018, the Company acquired certain assets of Celtic. The purchase price included an uncollateralized $300 promissory note bearing interest at 3.0% (the "Celtic Note") payable in three equal annual installments. The outstanding balance of the Celtic Note was $97 and $100 as of July 3, 2021 and January 2, 2021, respectively. On November 2, 2018, the Company acquired CHI. The purchase price included an uncollateralized $15,000 promissory note bearing interest at 3.0% (the "CHI Note") payable in four equal annual installments. The outstanding balance of the CHI Note was $7,500 as of July 3, 2021 and January 2, 2021. On August 24, 2018, the Company acquired CALYX. The purchase price included an uncollateralized $4,000 promissory note bearing interest at 3.75% payable in four equal annual installments of $1,000. The outstanding balance of the CALYX Note was $2,000 as of July 3, 2021 and January 2, 2021. On February 2, 2018, the Company acquired CSA. The purchase price included an uncollateralized $600 promissory note bearing interest at 3.0% (the "CSA Note") payable in four equal annual installments of $150. The outstanding balance of the CSA Note was $150 and $300 as of July 3, 2021 and January 2, 2021, respectively. On January 12, 2018, the Company acquired all of the outstanding equity interest in Butsko. The purchase price included an uncollateralized $1,000 promissory note bearing interest at 3.0% (the "Butsko Note") payable in four equal annual installments of $250. The outstanding balance of the Butsko Note was $300 and $500 as of July 3, 2021 and January 2, 2021, respectively. On June 6, 2017, the Company acquired all of the outstanding equity interest in RDK. The purchase price included an uncollateralized $5,500 promissory note bearing interest at 3.0% (the "RDK Note") payable in four equal annual installments of $1,375. There was no outstanding balance on the RDK Note as of July 3, 2021. As of January 2, 2021, the outstanding balance of the RDK Note was $1,375. On May 4, 2017, the Company acquired all of the outstanding equity interest in H&K. The purchase price included an uncollateralized $600 promissory note bearing interest at 3.0% (the "H&K Note") payable in four equal annual installments of $150. There was no outstanding balance on the H&K Note as of July 3, 2021. As of January 2, 2021, the outstanding balance of the H&K Note was $150. On May 1, 2017, the Company acquired all of the outstanding equity interest in Lochrane. The purchase price included an uncollateralized $1,650 promissory note bearing interest at 3.0% (the "Lochrane Note") payable in four equal annual installments of $413. There was no outstanding balance on the Lochrane Note as of July 3, 2021. As of January 2, 2021, the outstanding balance of the Lochrane Note was $413. On November 30, 2016, the Company acquired all of the outstanding interests of Hanna. The purchase price included an uncollateralized $2,700 promissory note bearing interest at 3.0% (the "Hanna Note") payable in four equal annual installments of $675. The outstanding balance of the Hanna Note was $430 as of July 3, 2021 and January 2, 2021.

Contingent Consideration

Contingent Consideration	6 Months Ended
	Jul. 03, 2021
Commitments and Contingencies Disclosure [Abstract]
Contingent Consideration	Contingent Consideration The following table summarizes the changes in the carrying value of estimated contingent consideration: July 3, 2021 January 2, 2021 Contingent consideration, beginning of the year $ 2,400 $ 4,002 Additions for acquisitions 3,294 255 Reduction of liability for payments made (622) (1,857) Increase of liability related to re-measurement of fair value 235 — Total contingent consideration, end of the period 5,307 2,400 Current portion of contingent consideration 3,933 1,334 Contingent consideration, less current portion $ 1,374 $ 1,066

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jul. 03, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Litigation, Claims and Assessments The Company is subject to certain claims and lawsuits typically filed against the engineering, consulting and construction profession, alleging primarily professional errors or omissions. The Company carries professional liability insurance, subject to certain deductibles and policy limits, against such claims. However, in some actions, parties are seeking damages that exceed our insurance coverage or for which we are not insured. While management does not believe that the resolution of these claims will have a material adverse effect, individually or in aggregate, on its financial position, results of operations or cash flows, management acknowledges the uncertainty surrounding the ultimate resolution of these matters.

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Jul. 03, 2021
Share-based Payment Arrangement [Abstract]
Stock-Based Compensation	Stock-Based Compensation In October 2011, our stockholders approved the 2011 Equity Incentive Plan, which was subsequently amended and restated in March 2013 (as amended, the “2011 Equity Plan”). The 2011 Equity Plan provides directors, executive officers, and other employees of the Company with additional incentives by allowing them to acquire ownership interest in the business and, as a result, encouraging them to contribute to the Company’s success. We may provide these incentives through the grant of stock options, stock appreciation rights, restricted stock, restricted stock units, performance shares and units, and other cash-based or stock-based awards. As of July 3, 2021, 661,858 shares of common stock are authorized and reserved for issuance under the 2011 Equity Plan. This reserve automatically increases on each January 1 from 2014 through 2023, by an amount equal to the smaller of (i) 3.5% of the number of shares issued and outstanding on the immediately preceding December 31, or (ii) an amount determined by our Board of Directors. The restricted shares of common stock granted generally provide for service-based vesting after two The following summarizes the activity of restricted stock awards during the six months ended July 3, 2021: Number of Unvested Restricted Shares of Common Stock and Restricted Stock Units Weighted Average January 2, 2021 770,183 $ 57.20 Granted 235,418 $ 90.02 Vested (137,477) $ 62.13 Forfeited (32,362) $ 57.71 July 3, 2021 835,762 $ 65.83 Stock-based compensation expense relating to restricted stock awards during the three and six months ended July 3, 2021 was $4,094 and $7,790, respectively, and $3,501 and $6,880 during the three and six months ended June 27, 2020, respectively. Approximately $34,940 of deferred compensation, which is expected to be recognized over the remaining weighted average

Income Taxes

Income Taxes	6 Months Ended
	Jul. 03, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes As of July 3, 2021 and January 2, 2021, the Company had net deferred income tax liabilities of $29,736 and $27,791, respectively. Deferred income tax liabilities primarily relate to intangible assets and accounting basis adjustments where we have a future obligation for tax purposes. The Company's effective income tax rate was 19.7% and 21.1% during the three and six months ended July 3, 2021, respectively, and 31.3% and 28.5% during the three and six months ended June 27, 2020, respectively. The difference between the effective income tax rate and the combined statutory federal and state income tax rate was primarily due to the recognition of excess tax benefits from stock-based payments in the second quarter of 2021 and the recognition of tax expense from stock-based payments in the second quarter in 2020. The Company evaluates tax positions for recognition using a more-likely-than-not recognition threshold, and those tax positions eligible for recognition are measured as the largest amount of tax benefit that is greater than 50% likely of being realized upon the effective settlement with a taxing authority that has full knowledge of all relevant information. The California Franchise Tax Board (“CFTB”) challenged research and development tax credits generated for the years 2012 to 2014. Fiscal years 2012 through 2020 are considered open tax years in the State of California and 2017 through 2020 in the U.S. federal jurisdiction and other state and foreign jurisdictions. It is not expected that there will be a significant change in the unrecognized tax benefits within the next 12 months.

Reportable Segments

Reportable Segments	6 Months Ended
	Jul. 03, 2021
Segment Reporting [Abstract]
Reportable Segments	Reportable Segments The Company reports segment information in accordance with ASC Topic No. 280 “ Segment Reporting” (“Topic No. 280”). The Company's Chief Executive Officer, who is the chief operating decision maker ("CODM"), organized the Company into three operating and reportable segments: Infrastructure ("INF"), which includes the Company's engineering, civil program management, utility services, and construction quality assurance, testing and inspection practices; Building, Technology & Sciences ("BTS"), which includes the Company's environmental, buildings and program management, and MEP & technology practices; and Geospatial Solutions ("GEO"), which includes the Company's geospatial solution practices. The prior period results of the Company's INF and GEO reportable segments were adjusted to include the results of Skyscene, LLC ("Skyscene") in the Company's GEO reportable segment. The adjustment to the INF and GEO segments was not material to prior period segment financial results. The Company evaluates the performance of these reportable segments based on their respective operating income before the effect of amortization expense related to acquisitions and other unallocated corporate expenses. The following tables set forth summarized financial information concerning our reportable segments: Three Months Ended Six Months Ended July 3, 2021 June 27, 2020 July 3, 2021 June 27, 2020 Gross revenues INF $ 97,755 $ 87,087 $ 185,288 $ 170,820 BTS 43,818 36,641 82,423 79,752 GEO 37,930 38,961 64,887 77,597 Total gross revenues $ 179,503 $ 162,689 $ 332,598 $ 328,169 Segment income before taxes INF $ 19,149 $ 15,484 $ 35,961 $ 28,596 BTS 7,501 5,409 13,766 10,828 GEO 10,121 6,458 14,026 14,299 Total Segment income before taxes 36,771 27,351 63,753 53,723 Corporate (1) (19,787) (20,792) (39,533) (41,570) Total income before taxes $ 16,984 $ 6,559 $ 24,220 $ 12,153 (1) Includes amortization of intangibles of $8,529 and $16,497 for the three and six months ended July 3, 2021, respectively, and $9,512 and $17,851 for the three and six months ended June 27, 2020, respectively. Upon adoption of Topic 606, the Company disaggregates its gross revenues from contracts with customers by geographic location, customer-type and contract-type for each of our reportable segments. Disaggregated revenues include the elimination of inter-segment revenues which has been allocated to each segment. The Company believes this best depicts how the nature, amount, timing and uncertainty of its revenues and cash flows are affected by economic factors. Gross revenue, classified by the major geographic areas in which the Company's customers were located, were as follows: Three Months Ended July 3, 2021 Six Months Ended July 3, 2021 INF BTS GEO Total INF BTS GEO Total United States $ 97,755 $ 39,718 $ 37,490 $ 174,963 $ 185,288 $ 75,016 $ 63,864 $ 324,168 Foreign — 4,100 440 4,540 — 7,407 1,023 8,430 Total gross revenues $ 97,755 $ 43,818 $ 37,930 $ 179,503 $ 185,288 $ 82,423 $ 64,887 $ 332,598 Three Months Ended June 27, 2020 Six Months Ended June 27, 2020 INF BTS GEO Total INF BTS GEO Total United States $ 87,087 $ 34,743 $ 38,731 $ 160,561 $ 170,820 $ 75,185 $ 76,962 $ 322,967 Foreign — 1,898 230 2,128 — 4,567 635 5,202 Total gross revenues $ 87,087 $ 36,641 $ 38,961 $ 162,689 $ 170,820 $ 79,752 $ 77,597 $ 328,169 Gross revenue by customer were as follows: Three Months Ended July 3, 2021 Six Months Ended July 3, 2021 INF BTS GEO Total INF BTS GEO Total Public and quasi-public sector $ 76,777 $ 16,562 $ 24,847 $ 118,186 $ 145,460 $ 36,885 $ 42,820 $ 225,165 Private sector 20,978 27,256 13,083 61,317 39,828 45,538 22,067 107,433 Total gross revenues $ 97,755 $ 43,818 $ 37,930 $ 179,503 $ 185,288 $ 82,423 $ 64,887 $ 332,598 Three Months Ended June 27, 2020 Six Months Ended June 27, 2020 INF BTS GEO Total INF BTS GEO Total Public and quasi-public sector $ 67,157 $ 17,658 $ 27,090 $ 111,905 $ 132,090 $ 35,492 $ 54,053 $ 221,635 Private sector 19,930 18,983 11,871 50,784 38,730 44,260 23,544 106,534 Total gross revenues $ 87,087 $ 36,641 $ 38,961 $ 162,689 $ 170,820 $ 79,752 $ 77,597 $ 328,169 Gross revenues by contract type were as follows: Three Months Ended July 3, 2021 Six Months Ended July 3, 2021 INF BTS GEO Total INF BTS GEO Total Cost-reimbursable contracts $ 93,396 $ 31,453 $ 37,822 $ 162,671 $ 176,781 $ 60,162 $ 64,711 $ 301,654 Fixed-unit price contracts 4,359 12,365 108 16,832 8,507 22,261 176 30,944 Total gross revenues $ 97,755 $ 43,818 $ 37,930 $ 179,503 $ 185,288 $ 82,423 $ 64,887 $ 332,598 Three Months Ended June 27, 2020 Six Months Ended June 27, 2020 INF BTS GEO Total INF BTS GEO Total Cost-reimbursable contracts $ 81,884 $ 31,167 $ 38,906 $ 151,957 $ 161,660 $ 64,377 $ 77,438 $ 303,475 Fixed-unit price contracts 5,203 5,474 55 10,732 9,160 15,375 159 24,694 Total gross revenues $ 87,087 $ 36,641 $ 38,961 $ 162,689 $ 170,820 $ 79,752 $ 77,597 $ 328,169

Leases

Leases	6 Months Ended
	Jul. 03, 2021
Leases [Abstract]
Leases	Leases The Company primarily leases property under operating leases and has six equipment operating leases for aircrafts used by the operations of QSI. The Company's property operating leases consist of various office facilities. The Company uses a portfolio approach to account for such leases due to the similarities in characteristics and apply an incremental borrowing rate based on estimates of rates the Company would pay for senior collateralized loans over a similar term. The Company's office leases with an initial term of 12 months or less are not recorded on the balance sheet. The Company accounts for lease components (e.g. fixed payments including rent, real estate taxes and common area maintenance costs) as a single lease component. Some of the Company's leases include one or more options to renew the lease term at its sole discretion; however, these are not included in the calculation of its lease liability or ROU lease asset because they are not reasonably certain of exercise. The Company also leases vehicles through a fleet leasing program. The payments for the vehicles are based on the terms selected. The Company has determined that it is reasonably certain that the leased vehicles will be held beyond the period in which the entire capitalized value of the vehicle has been paid to the lessor. As such, the capitalized value is the delivered price of the vehicle. The Company's vehicle leases are classified as financing leases. Supplemental balance sheet information related to the Company's operating and finance leases is as follows: Leases Classification July 3, 2021 January 2, 2021 Assets Operating lease assets Right-of-use lease asset, net (1) $ 44,196 $ 43,607 Finance lease assets Property and equipment, net (1) 2,719 2,946 Total leased assets $ 46,915 $ 46,553 Liabilities Current Operating Accrued liabilities $ (12,879) $ (13,161) Finance Current portion of notes payable and other obligations (1,346) (1,321) Noncurrent Operating Other long-term liabilities (33,076) (32,290) Finance Notes payable and other obligations, less current portion (1,396) (1,673) Total lease liabilities $ (48,697) $ (48,445) (1) At July 3, 2021, operating right of-use lease assets and finance lease assets are recorded net of accumulated amortization of $23,964 and $3,034, respectively. At January 2, 2021, operating right-of-use lease assets and finance lease assets are recorded net of accumulated amortization of $19,096 and $2,499, respectively. Supplemental balance sheet information related to the Company's operating and finance leases is as follows: Weighted - Average Remaining Lease Term (Years) July 3, 2021 January 2, 2021 Operating leases 4.7 4.9 Finance leases 1.9 2.1 Weighted - Average Discount Rate Operating leases 4% 4% Finance leases 7% 7% Supplemental cash flow information related to the Company's operating and finance lease liabilities is as follows: Three Months Ended Six Months Ended July 3, 2021 June 27, 2020 July 3, 2021 June 27, 2020 Operating cash flows from operating leases $ 3,531 $ 3,419 $ 7,048 $ 6,939 Financing cash flows from finance leases $ 337 $ 268 $ 592 $ 535 Right-of-use assets obtained in exchange for lease obligations: Operating leases $ 1,073 $ 2,995 $ 2,382 $ 7,985 The following tables summarize the components of lease cost recognized in the consolidated statements of net income and comprehensive income: Three Months Ended Six Months Ended Lease Cost Classification July 3, 2021 July 3, 2021 Operating lease cost Facilities and facilities related $ 3,973 $ 7,654 Variable operating lease cost Facilities and facilities related 333 931 Finance lease cost Amortization of financing lease assets Depreciation and amortization 337 592 Interest on lease liabilities Interest expense 45 78 Total lease cost $ 4,688 $ 9,255 Three Months Ended Six Months Ended Lease Cost Classification June 27, 2020 June 27, 2020 Operating lease cost Facilities and facilities related $ 3,515 $ 7,100 Variable operating lease cost Facilities and facilities related — — Finance lease cost Amortization of financing lease assets Depreciation and amortization 260 509 Interest on lease liabilities Interest expense 31 61 Total lease cost $ 3,806 $ 7,670 As of July 3, 2021, maturities of the Company's lease liabilities under its long-term operating leases and finance leases for the next five fiscal years and thereafter are as follows: Fiscal Year Operating Leases Finance Leases Remainder of 2021 $ 7,512 $ 1,397 2022 12,729 993 2023 10,143 522 2024 7,411 119 2025 5,436 53 Thereafter 7,245 — Total lease payments 50,476 3,084 Less: Interest (4,521) (342) Present value of lease liabilities $ 45,955 $ 2,742
Leases	Leases The Company primarily leases property under operating leases and has six equipment operating leases for aircrafts used by the operations of QSI. The Company's property operating leases consist of various office facilities. The Company uses a portfolio approach to account for such leases due to the similarities in characteristics and apply an incremental borrowing rate based on estimates of rates the Company would pay for senior collateralized loans over a similar term. The Company's office leases with an initial term of 12 months or less are not recorded on the balance sheet. The Company accounts for lease components (e.g. fixed payments including rent, real estate taxes and common area maintenance costs) as a single lease component. Some of the Company's leases include one or more options to renew the lease term at its sole discretion; however, these are not included in the calculation of its lease liability or ROU lease asset because they are not reasonably certain of exercise. The Company also leases vehicles through a fleet leasing program. The payments for the vehicles are based on the terms selected. The Company has determined that it is reasonably certain that the leased vehicles will be held beyond the period in which the entire capitalized value of the vehicle has been paid to the lessor. As such, the capitalized value is the delivered price of the vehicle. The Company's vehicle leases are classified as financing leases. Supplemental balance sheet information related to the Company's operating and finance leases is as follows: Leases Classification July 3, 2021 January 2, 2021 Assets Operating lease assets Right-of-use lease asset, net (1) $ 44,196 $ 43,607 Finance lease assets Property and equipment, net (1) 2,719 2,946 Total leased assets $ 46,915 $ 46,553 Liabilities Current Operating Accrued liabilities $ (12,879) $ (13,161) Finance Current portion of notes payable and other obligations (1,346) (1,321) Noncurrent Operating Other long-term liabilities (33,076) (32,290) Finance Notes payable and other obligations, less current portion (1,396) (1,673) Total lease liabilities $ (48,697) $ (48,445) (1) At July 3, 2021, operating right of-use lease assets and finance lease assets are recorded net of accumulated amortization of $23,964 and $3,034, respectively. At January 2, 2021, operating right-of-use lease assets and finance lease assets are recorded net of accumulated amortization of $19,096 and $2,499, respectively. Supplemental balance sheet information related to the Company's operating and finance leases is as follows: Weighted - Average Remaining Lease Term (Years) July 3, 2021 January 2, 2021 Operating leases 4.7 4.9 Finance leases 1.9 2.1 Weighted - Average Discount Rate Operating leases 4% 4% Finance leases 7% 7% Supplemental cash flow information related to the Company's operating and finance lease liabilities is as follows: Three Months Ended Six Months Ended July 3, 2021 June 27, 2020 July 3, 2021 June 27, 2020 Operating cash flows from operating leases $ 3,531 $ 3,419 $ 7,048 $ 6,939 Financing cash flows from finance leases $ 337 $ 268 $ 592 $ 535 Right-of-use assets obtained in exchange for lease obligations: Operating leases $ 1,073 $ 2,995 $ 2,382 $ 7,985 The following tables summarize the components of lease cost recognized in the consolidated statements of net income and comprehensive income: Three Months Ended Six Months Ended Lease Cost Classification July 3, 2021 July 3, 2021 Operating lease cost Facilities and facilities related $ 3,973 $ 7,654 Variable operating lease cost Facilities and facilities related 333 931 Finance lease cost Amortization of financing lease assets Depreciation and amortization 337 592 Interest on lease liabilities Interest expense 45 78 Total lease cost $ 4,688 $ 9,255 Three Months Ended Six Months Ended Lease Cost Classification June 27, 2020 June 27, 2020 Operating lease cost Facilities and facilities related $ 3,515 $ 7,100 Variable operating lease cost Facilities and facilities related — — Finance lease cost Amortization of financing lease assets Depreciation and amortization 260 509 Interest on lease liabilities Interest expense 31 61 Total lease cost $ 3,806 $ 7,670 As of July 3, 2021, maturities of the Company's lease liabilities under its long-term operating leases and finance leases for the next five fiscal years and thereafter are as follows: Fiscal Year Operating Leases Finance Leases Remainder of 2021 $ 7,512 $ 1,397 2022 12,729 993 2023 10,143 522 2024 7,411 119 2025 5,436 53 Thereafter 7,245 — Total lease payments 50,476 3,084 Less: Interest (4,521) (342) Present value of lease liabilities $ 45,955 $ 2,742

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jul. 03, 2021
Accounting Policies [Abstract]
Basis of Presentation and Principles of Consolidation	Basis of Presentation and Principles of Consolidation The consolidated financial statements of the Company are presented in U.S. dollars in conformity with accounting principles generally accepted in the United States (“U.S. GAAP”) and have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”) for reporting of interim financial information. Pursuant to such rules and regulations, certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted. The consolidated financial statements include the accounts of the Company and its subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. In the opinion of management, the accompanying unaudited interim consolidated financial statements of the Company contain all adjustments necessary to present fairly the financial position and results of operations of the Company as of the dates and for the periods presented. Accordingly, these statements should be read in conjunction with the consolidated financial statements and notes contained in the Company’s Annual Report on Form 10-K for the year ended January 2, 2021 (the “2020 Form 10-K”). The results of operations and cash flows for the interim periods presented are not necessarily indicative of the results to be expected for any future interim period or for the full 2021 fiscal year.
Performance Obligations	Performance Obligations To determine the proper revenue recognition method, the Company evaluates whether two or more contracts should be combined and accounted for as one single contract and whether the combined or single contract should be accounted for as more than one performance obligation. The majority of the Company's contracts have a single performance obligation as the promise to transfer the individual goods or services that is not separately identifiable from other promises in the contracts and therefore, is not distinct. The Company’s performance obligations are satisfied as work progresses or at a point in time. Revenue on the Company's cost-reimbursable contracts is recognized over time using direct costs incurred or direct costs incurred to date as compared to the estimated total direct costs for performance obligations because it depicts the transfer of control to the customer. Contract costs include labor, sub-consultant services, and other direct costs. Gross revenue from services transferred to customers at a point in time is recognized when the customer obtains control of the asset, which is generally upon delivery and acceptance by the customer of the reports and/or analysis performed. As of July 3, 2021, the Company had $678,715 of remaining performance obligations, of which $544,001 is expected to be recognized over the next 12 months and the majority of the balance over the next 24 months. Contracts for which work authorizations have been received are included in performance obligations. Most of the Company's government contracts are multi-year contracts for which funding is appropriated on an annual basis, therefore performance obligations include only those amounts that have been funded and authorized and does not reflect the full amounts the Company may receive over the term of such contracts. In the case of non-government contracts and project awards, performance obligations include future revenue at contract or customary rates, excluding contract renewals or extensions that are at the discretion of the client. For contracts with a not-to-exceed maximum amount, the Company includes revenue from such contracts in performance obligations to the extent of the remaining estimated amount. Contract Balances
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill is the excess of consideration paid for an acquired entity over the amounts assigned to assets acquired, including other identifiable intangible assets and liabilities assumed in a business combination. To determine the amount of goodwill resulting from a business combination, the Company performs an assessment to determine the acquisition date fair value of the acquired company’s tangible and identifiable intangible assets and liabilities. Goodwill is required to be evaluated for impairment on an annual basis or whenever events or changes in circumstances indicate the asset may be impaired. An entity has the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. These qualitative factors include: macroeconomic and industry conditions, cost factors, overall financial performance and other relevant entity-specific events. If the entity determines that this threshold is met, then the Company may apply a one-step quantitative test and record the amount of goodwill impairment as the excess of a reporting unit's carrying amount over its fair value, not to exceed the total amount of goodwill allocated to the reporting unit. The Company determines fair value through multiple valuation techniques, and weights the results accordingly. NV5 Global is required to make certain subjective and complex judgments in assessing whether an event of impairment of goodwill has occurred, including assumptions and estimates used to determine the fair value of its reporting units. The Company has elected to perform its annual goodwill impairment review as of August 1 of each year. The Company conducts its annual impairment tests on the goodwill using the quantitative method of evaluating goodwill. As of August 1, 2020, the Company conducted its annual impairment tests using the quantitative method of evaluating goodwill. Based on the quantitative analyses the Company determined the fair value of each of the reporting units exceeded its carrying value. Therefore, the goodwill was not impaired and the Company did not recognize an impairment charge relating to goodwill as of August 1, 2020. Furthermore, there were no indicators, events or changes in circumstances that would indicate goodwill was impaired during the period from August 2, 2020 through July 3, 2021. Identifiable intangible assets primarily include customer backlog, customer relationships, trade names, non-compete agreements, and developed technology. Amortizable intangible assets are amortized on a straight-line basis over their estimated useful lives and reviewed for impairment whenever events or changes in circumstances indicate that the assets may be impaired. If an indicator of impairment exists, the Company compares the estimated future cash flows of the asset, on an undiscounted basis, to the carrying value of the asset. If the undiscounted cash flows exceed the carrying value, no impairment is indicated. If the undiscounted cash flows do not exceed the carrying value, then impairment, if any, is measured as the difference between fair value and carrying value, with fair value typically based on a discounted cash flow model. There were no indicators, events or changes in circumstances that would indicate intangible assets were impaired during the six months ended July 3, 2021. See Note 8, Goodwill and Intangible Assets , for further information on goodwill and identified intangibles.
Recently Accounting Pronouncements	Recent Accounting Pronouncements In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848)

Earnings per Share (Tables)

Earnings per Share (Tables)	6 Months Ended
	Jul. 03, 2021
Earnings Per Share [Abstract]
Schedule of Reconciliation of the Net Income and Weighted Average Shares Outstanding for the Calculation of Basic and Diluted Earnings Per Share	The following table represents a reconciliation of the net income and weighted average shares outstanding for the calculation of basic and diluted earnings per share: Three Months Ended Six Months Ended July 3, 2021 June 27, 2020 July 3, 2021 June 27, 2020 Numerator: Net income – basic and diluted $ 13,638 $ 4,503 $ 19,118 $ 8,691 Denominator: Basic weighted average shares outstanding 14,419,671 12,308,965 13,648,247 12,271,221 Effect of dilutive non-vested restricted shares and units 515,913 245,282 520,824 271,618 Effect of issuable shares related to acquisitions 29,604 55,671 26,964 58,991 Diluted weighted average shares outstanding 14,965,188 12,609,918 14,196,035 12,601,830

Business Acquisitions (Tables)

Business Acquisitions (Tables)	6 Months Ended
	Jul. 03, 2021
Business Combination and Asset Acquisition [Abstract]
Summary of the Fair Values of the Assets Acquires and Liabilities Assumed	The following table summarizes the fair values of the assets acquired and liabilities assumed as of the acquisition date for the acquisitions closed during the six months ended July 3, 2021 and the fiscal year ended January 2, 2021: Six Months Ended Fiscal Year Ended July 3, 2021 January 2, 2021 Cash $ 823 $ — Billed and unbilled receivables, net 5,631 1,439 Right-of-use assets 2,329 — Property and equipment 3,475 28 Prepaid expenses 392 33 Other assets 6 28 Intangible assets: Customer relationships 11,709 237 Trade name 703 30 Customer backlog 1,547 56 Non-compete 2,715 5 Total Assets $ 29,330 $ 1,856 Liabilities (5,155) (345) Deferred tax liabilities (4,852) (86) Net assets acquired $ 19,323 $ 1,425 Consideration paid (Cash, Notes and/or stock) $ 36,709 $ 1,694 Contingent earn-out liability (Cash and stock) 3,294 255 Total Consideration $ 40,003 $ 1,949 Excess consideration over the amounts assigned to the net assets acquired (Goodwill) $ 20,680 $ 524
Results of Operations From Any Business Acquired	The consolidated financial statements of the Company include the results of operations from any business acquired from their respective dates of acquisition. The following table presents the results of operations of businesses acquired from their respective dates of acquisition for the three and six months ended July 3, 2021. Three Months Ended Six Months Ended July 3, 2021 July 3, 2021 Gross revenues $ 8,529 $ 9,981 Income before income taxes $ 2,795 $ 3,288
Pro Forma Consolidated Results of Operations	The pro forma results are not necessarily indicative of (i) the results of operations that would have occurred had the operations of these acquisitions actually been acquired at the beginning of fiscal year 2020 or (ii) future results of operations: Three Months Ended Six Months Ended July 3, 2021 June 27, 2020 July 3, 2021 June 27, 2020 Gross revenues $ 180,954 $ 168,656 $ 339,947 $ 341,214 Net income $ 13,551 $ 4,484 $ 19,299 $ 8,974 Basic earnings per share $ 0.94 $ 0.36 $ 1.41 $ 0.73 Diluted earnings per share $ 0.91 $ 0.35 $ 1.36 $ 0.71

Billed and Unbilled Receivabl_2

Billed and Unbilled Receivables (Tables)	6 Months Ended
	Jul. 03, 2021
Receivables [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable	Billed and Unbilled Receivables consists of the following: July 3, 2021 January 2, 2021 Billed receivables $ 114,779 $ 149,233 Less: allowance for doubtful accounts (5,657) (6,528) Billed receivables, net $ 109,122 $ 142,705 Unbilled receivables $ 85,996 $ 76,609 Less: allowance for doubtful accounts (2,410) (2,151) Unbilled receivables, net $ 83,586 $ 74,458

Property and Equipment, net (Ta

Property and Equipment, net (Tables)	6 Months Ended
	Jul. 03, 2021
Property, Plant and Equipment [Abstract]
Schedule of Property and Equipment	Property and equipment, net, consists of the following: July 3, 2021 January 2, 2021 Office furniture and equipment $ 3,845 $ 3,782 Computer equipment 16,648 15,597 Survey and field equipment 27,143 22,866 Leasehold improvements 6,406 6,322 Total 54,042 48,567 Less: accumulated depreciation (24,598) (21,556) Property and equipment, net $ 29,444 $ 27,011

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	6 Months Ended
	Jul. 03, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The changes in the carrying value by reportable segment for the six months ended July 3, 2021 were as follows: Six Months Ended January 2, 2021 2021 Acquisitions Adjustments July 3, 2021 INF $ 87,333 $ 3,392 $ — $ 90,725 BTS 78,848 5,790 86 84,724 GEO 177,615 11,498 — 189,113 Total $ 343,796 $ 20,680 $ 86 $ 364,562
Schedule of Finite-lived Intangible Assets	Intangible assets, net, as of July 3, 2021 and January 2, 2021 consist of the following: July 3, 2021 January 2, 2021 Gross Accumulated Amortization Net Gross Accumulated Amortization Net Finite-lived intangible assets: Customer relationships (1) $ 194,757 $ (55,536) $ 139,221 $ 183,048 $ (46,506) $ 136,542 Trade name (2) 15,220 (13,540) 1,680 14,517 (12,099) 2,418 Customer backlog (3) 26,658 (22,372) 4,286 25,111 (19,709) 5,402 Non-compete (4) 12,088 (7,920) 4,168 9,373 (6,909) 2,464 Developed technology (5) 32,944 (7,206) 25,738 32,944 (4,839) 28,105 Total finite-lived intangible assets $ 281,667 $ (106,574) $ 175,093 $ 264,993 $ (90,062) $ 174,931 (1) Amortized on a straight-line basis over estimated lives (5 to 12 years) (2) Amortized on a straight-line basis over their estimated lives (1 to 3 years) (3) Amortized on a straight-line basis over their estimated lives (1 to 5 years) (4) Amortized on a straight-line basis over their contractual lives (2 to 5 years) (5) Amortized on a straight-line basis over their estimated lives (5 to 7 years)

Accrued Liabilities (Tables)

Accrued Liabilities (Tables)	6 Months Ended
	Jul. 03, 2021
Payables and Accruals [Abstract]
Schedule of Accrued Liabilities	Accrued liabilities consist of the following: July 3, 2021 January 2, 2021 Current portion of lease liability $ 12,879 $ 13,161 Accrued vacation 14,542 11,998 Payroll and related taxes 11,453 10,744 Benefits 3,130 4,764 Accrued operating expenses 3,568 2,792 Professional liability reserve 902 949 Accrued interest expense 507 506 Income tax payable and other liabilities 338 411 Total $ 47,319 $ 45,325

Notes Payable and Other Oblig_2

Notes Payable and Other Obligations (Tables)	6 Months Ended
	Jul. 03, 2021
Payables and Accruals [Abstract]
Schedule of Notes Payable and Other Obligations	Notes payable and other obligations consists of the following: July 3, 2021 January 2, 2021 Senior credit facility $ 138,750 $ 283,832 Uncollateralized promissory notes 28,374 23,175 Finance leases 2,742 2,994 Other obligations 2,645 1,151 Debt issuance costs, net of amortization (3,175) (3,630) Total notes payable and other obligations 169,336 307,522 Current portion of notes payable and other obligations 26,989 24,196 Notes payable and other obligations, less current portion $ 142,347 $ 283,326
Schedule of Amended Consolidated Leverage Ratio	The amended consolidated leverage ratio requirements are as follows: Measurement Period Ending Maximum Consolidated Leverage Ratio Amendment Closing Date through June 27, 2020 4.50 to 1.00 June 28, 2020 through October 3, 2020 5.00 to 1.00 October 4, 2020 through January 2, 2021 5.25 to 1.00 January 3, 2021 and April 3, 2021 4.75 to 1.00 April 4, 2021 and July 3, 2021 4.00 to 1.00 July 4, 2021 and thereafter 3.50 to 1.00

Contingent Consideration (Table

Contingent Consideration (Tables)	6 Months Ended
	Jul. 03, 2021
Commitments and Contingencies Disclosure [Abstract]
Schedule of Changes Carrying Value of Estimated Contingent Consideration	The following table summarizes the changes in the carrying value of estimated contingent consideration: July 3, 2021 January 2, 2021 Contingent consideration, beginning of the year $ 2,400 $ 4,002 Additions for acquisitions 3,294 255 Reduction of liability for payments made (622) (1,857) Increase of liability related to re-measurement of fair value 235 — Total contingent consideration, end of the period 5,307 2,400 Current portion of contingent consideration 3,933 1,334 Contingent consideration, less current portion $ 1,374 $ 1,066

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
	Jul. 03, 2021
Share-based Payment Arrangement [Abstract]
Share-based Payment Arrangement, Restricted Stock Unit, Activity	The following summarizes the activity of restricted stock awards during the six months ended July 3, 2021: Number of Unvested Restricted Shares of Common Stock and Restricted Stock Units Weighted Average January 2, 2021 770,183 $ 57.20 Granted 235,418 $ 90.02 Vested (137,477) $ 62.13 Forfeited (32,362) $ 57.71 July 3, 2021 835,762 $ 65.83

Reportable Segments (Tables)

Reportable Segments (Tables)	6 Months Ended
	Jul. 03, 2021
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	The following tables set forth summarized financial information concerning our reportable segments: Three Months Ended Six Months Ended July 3, 2021 June 27, 2020 July 3, 2021 June 27, 2020 Gross revenues INF $ 97,755 $ 87,087 $ 185,288 $ 170,820 BTS 43,818 36,641 82,423 79,752 GEO 37,930 38,961 64,887 77,597 Total gross revenues $ 179,503 $ 162,689 $ 332,598 $ 328,169 Segment income before taxes INF $ 19,149 $ 15,484 $ 35,961 $ 28,596 BTS 7,501 5,409 13,766 10,828 GEO 10,121 6,458 14,026 14,299 Total Segment income before taxes 36,771 27,351 63,753 53,723 Corporate (1) (19,787) (20,792) (39,533) (41,570) Total income before taxes $ 16,984 $ 6,559 $ 24,220 $ 12,153 (1) Includes amortization of intangibles of $8,529 and $16,497 for the three and six months ended July 3, 2021, respectively, and $9,512 and $17,851 for the three and six months ended June 27, 2020, respectively.
Schedule of Revenue From External Customers by Geographic Areas	Gross revenue, classified by the major geographic areas in which the Company's customers were located, were as follows: Three Months Ended July 3, 2021 Six Months Ended July 3, 2021 INF BTS GEO Total INF BTS GEO Total United States $ 97,755 $ 39,718 $ 37,490 $ 174,963 $ 185,288 $ 75,016 $ 63,864 $ 324,168 Foreign — 4,100 440 4,540 — 7,407 1,023 8,430 Total gross revenues $ 97,755 $ 43,818 $ 37,930 $ 179,503 $ 185,288 $ 82,423 $ 64,887 $ 332,598 Three Months Ended June 27, 2020 Six Months Ended June 27, 2020 INF BTS GEO Total INF BTS GEO Total United States $ 87,087 $ 34,743 $ 38,731 $ 160,561 $ 170,820 $ 75,185 $ 76,962 $ 322,967 Foreign — 1,898 230 2,128 — 4,567 635 5,202 Total gross revenues $ 87,087 $ 36,641 $ 38,961 $ 162,689 $ 170,820 $ 79,752 $ 77,597 $ 328,169
Schedule of Revenue by Major Customers by Reporting Segments	Gross revenue by customer were as follows: Three Months Ended July 3, 2021 Six Months Ended July 3, 2021 INF BTS GEO Total INF BTS GEO Total Public and quasi-public sector $ 76,777 $ 16,562 $ 24,847 $ 118,186 $ 145,460 $ 36,885 $ 42,820 $ 225,165 Private sector 20,978 27,256 13,083 61,317 39,828 45,538 22,067 107,433 Total gross revenues $ 97,755 $ 43,818 $ 37,930 $ 179,503 $ 185,288 $ 82,423 $ 64,887 $ 332,598 Three Months Ended June 27, 2020 Six Months Ended June 27, 2020 INF BTS GEO Total INF BTS GEO Total Public and quasi-public sector $ 67,157 $ 17,658 $ 27,090 $ 111,905 $ 132,090 $ 35,492 $ 54,053 $ 221,635 Private sector 19,930 18,983 11,871 50,784 38,730 44,260 23,544 106,534 Total gross revenues $ 87,087 $ 36,641 $ 38,961 $ 162,689 $ 170,820 $ 79,752 $ 77,597 $ 328,169
Schedule of Revenue From External Customers by Products and Services	Gross revenues by contract type were as follows: Three Months Ended July 3, 2021 Six Months Ended July 3, 2021 INF BTS GEO Total INF BTS GEO Total Cost-reimbursable contracts $ 93,396 $ 31,453 $ 37,822 $ 162,671 $ 176,781 $ 60,162 $ 64,711 $ 301,654 Fixed-unit price contracts 4,359 12,365 108 16,832 8,507 22,261 176 30,944 Total gross revenues $ 97,755 $ 43,818 $ 37,930 $ 179,503 $ 185,288 $ 82,423 $ 64,887 $ 332,598 Three Months Ended June 27, 2020 Six Months Ended June 27, 2020 INF BTS GEO Total INF BTS GEO Total Cost-reimbursable contracts $ 81,884 $ 31,167 $ 38,906 $ 151,957 $ 161,660 $ 64,377 $ 77,438 $ 303,475 Fixed-unit price contracts 5,203 5,474 55 10,732 9,160 15,375 159 24,694 Total gross revenues $ 87,087 $ 36,641 $ 38,961 $ 162,689 $ 170,820 $ 79,752 $ 77,597 $ 328,169

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jul. 03, 2021
Leases [Abstract]
Schedule of Supplemental Balance Sheet Information	Supplemental balance sheet information related to the Company's operating and finance leases is as follows: Leases Classification July 3, 2021 January 2, 2021 Assets Operating lease assets Right-of-use lease asset, net (1) $ 44,196 $ 43,607 Finance lease assets Property and equipment, net (1) 2,719 2,946 Total leased assets $ 46,915 $ 46,553 Liabilities Current Operating Accrued liabilities $ (12,879) $ (13,161) Finance Current portion of notes payable and other obligations (1,346) (1,321) Noncurrent Operating Other long-term liabilities (33,076) (32,290) Finance Notes payable and other obligations, less current portion (1,396) (1,673) Total lease liabilities $ (48,697) $ (48,445) (1) At July 3, 2021, operating right of-use lease assets and finance lease assets are recorded net of accumulated amortization of $23,964 and $3,034, respectively. At January 2, 2021, operating right-of-use lease assets and finance lease assets are recorded net of accumulated amortization of $19,096 and $2,499, respectively.
Schedule of Lease Term and Discount Rate	Supplemental balance sheet information related to the Company's operating and finance leases is as follows: Weighted - Average Remaining Lease Term (Years) July 3, 2021 January 2, 2021 Operating leases 4.7 4.9 Finance leases 1.9 2.1 Weighted - Average Discount Rate Operating leases 4% 4% Finance leases 7% 7%
Schedule of Supplemental Cash Flow Information	Supplemental cash flow information related to the Company's operating and finance lease liabilities is as follows: Three Months Ended Six Months Ended July 3, 2021 June 27, 2020 July 3, 2021 June 27, 2020 Operating cash flows from operating leases $ 3,531 $ 3,419 $ 7,048 $ 6,939 Financing cash flows from finance leases $ 337 $ 268 $ 592 $ 535 Right-of-use assets obtained in exchange for lease obligations: Operating leases $ 1,073 $ 2,995 $ 2,382 $ 7,985
Schedule of Lease Cost	The following tables summarize the components of lease cost recognized in the consolidated statements of net income and comprehensive income: Three Months Ended Six Months Ended Lease Cost Classification July 3, 2021 July 3, 2021 Operating lease cost Facilities and facilities related $ 3,973 $ 7,654 Variable operating lease cost Facilities and facilities related 333 931 Finance lease cost Amortization of financing lease assets Depreciation and amortization 337 592 Interest on lease liabilities Interest expense 45 78 Total lease cost $ 4,688 $ 9,255 Three Months Ended Six Months Ended Lease Cost Classification June 27, 2020 June 27, 2020 Operating lease cost Facilities and facilities related $ 3,515 $ 7,100 Variable operating lease cost Facilities and facilities related — — Finance lease cost Amortization of financing lease assets Depreciation and amortization 260 509 Interest on lease liabilities Interest expense 31 61 Total lease cost $ 3,806 $ 7,670
Schedule of Maturities of Lease Liabilities	As of July 3, 2021, maturities of the Company's lease liabilities under its long-term operating leases and finance leases for the next five fiscal years and thereafter are as follows: Fiscal Year Operating Leases Finance Leases Remainder of 2021 $ 7,512 $ 1,397 2022 12,729 993 2023 10,143 522 2024 7,411 119 2025 5,436 53 Thereafter 7,245 — Total lease payments 50,476 3,084 Less: Interest (4,521) (342) Present value of lease liabilities $ 45,955 $ 2,742
Schedule of Maturities of Lease Liabilities	As of July 3, 2021, maturities of the Company's lease liabilities under its long-term operating leases and finance leases for the next five fiscal years and thereafter are as follows: Fiscal Year Operating Leases Finance Leases Remainder of 2021 $ 7,512 $ 1,397 2022 12,729 993 2023 10,143 522 2024 7,411 119 2025 5,436 53 Thereafter 7,245 — Total lease payments 50,476 3,084 Less: Interest (4,521) (342) Present value of lease liabilities $ 45,955 $ 2,742

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Revenue Recognition (Details) $ in Thousands	Jul. 03, 2021USD ($)
Accounting Policies [Abstract]
Remaining revenue performance obligation amount	$ 678,715
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-04
Accounting Policies [Abstract]
Remaining revenue performance obligation amount	$ 544,001
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-04 | Period One
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation expected timing of satisfaction	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-04 | Period Two
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation expected timing of satisfaction	24 months

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Leases (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jul. 03, 2021	Jul. 03, 2021
Accounting Policies [Abstract]
Revenue from contract liability	$ 4,742	$ 23,358

Earnings per Share - Narrative

Earnings per Share - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	Apr. 13, 2021	Mar. 15, 2021	Mar. 10, 2021	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (in shares)				16,894	180,554	11,805	177,029
Price per share (in dollars per share)			$ 93
Public Offering
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Sale of stock, number of shares issued in transaction (in shares)			1,612,903
Underwriting term			30 days
Consideration received on transaction		$ 140,642
Over-Allotment Option
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Sale of stock, number of shares issued in transaction (in shares)			241,935
Consideration received on transaction	$ 21,150
Restricted Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (in shares)						830,182	612,827

Earnings Per Share - Schedule o

Earnings Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Numerator:
Net income – basic	$ 13,638	$ 4,503	$ 19,118	$ 8,691
Net income – diluted	$ 13,638	$ 4,503	$ 19,118	$ 8,691
Denominator:
Basic weighted average shares outstanding (in shares)	14,419,671	12,308,965	13,648,247	12,271,221
Effect of dilutive non-vested restricted shares and units (in shares)	515,913	245,282	520,824	271,618
Effect of issuable shares related to acquisitions (in shares)	29,604	55,671	26,964	58,991
Diluted weighted average shares outstanding (in shares)	14,965,188	12,609,918	14,196,035	12,601,830

Business Acquisitions - Narrati

Business Acquisitions - Narrative (Details) $ in Thousands	May 14, 2021USD ($)annual_installmentshares	Mar. 25, 2021USD ($)annual_installmentshares	Feb. 22, 2021USD ($)annual_installmentshares	Feb. 09, 2021USD ($)annual_installment	Jul. 16, 2020USD ($)annual_installment	Apr. 03, 2021USD ($)	Jul. 03, 2021USD ($)	Jan. 02, 2021USD ($)	Dec. 28, 2019USD ($)
Business Acquisition [Line Items]
Earn-out of cash fair value							$ 5,307	$ 2,400	$ 4,002
IDA Engineering Private Limited
Business Acquisition [Line Items]
Total consideration				$ 2,955
Payments to acquire businesses				1,975
IDA Engineering Private Limited | Uncollateralized Promissory Notes
Business Acquisition [Line Items]
Notes payable				$ 980			980
Number of installments | annual_installment				2
Terra Tech
Business Acquisition [Line Items]
Total consideration			$ 7,514
Payments to acquire businesses			3
Consideration transferred of common stock			$ 450
Common stock number of shares (in shares) | shares			5,204
Common stock purchase price			$ 864
Number of equal installments | annual_installment			2
Terra Tech | Uncollateralized Promissory Notes
Business Acquisition [Line Items]
Notes payable			$ 3,200				3,200
Number of installments | annual_installment			5
Promissory note interest rate			2.75%
Periodic payment			$ 640
Geodynamics
Business Acquisition [Line Items]
Total consideration		$ 19,879
Payments to acquire businesses		11,000
Consideration transferred of common stock		$ 2,610
Common stock number of shares (in shares) | shares		30,533
Common stock purchase price		$ 21,000
Earn-out of cash fair value		2,269
Geodynamics | Uncollateralized Promissory Notes
Business Acquisition [Line Items]
Notes payable		$ 4,000					4,000
Number of installments | annual_installment		3
Promissory note interest rate		2.75%
Periodic payment		$ 1,333
PES Environmental
Business Acquisition [Line Items]
Total consideration	$ 9,655
Payments to acquire businesses	6,500
Consideration transferred of common stock	$ 1,100
Common stock number of shares (in shares) | shares	7,847
Common stock purchase price	$ 630
Earn-out of cash fair value	1,025
PES Environmental | Uncollateralized Promissory Notes
Business Acquisition [Line Items]
Notes payable	$ 1,500						1,500
Number of installments | annual_installment	3
Promissory note interest rate	2.75%
Mediatech
Business Acquisition [Line Items]
Total consideration					$ 1,949	$ 1,949
Payments to acquire businesses					882
Consideration transferred of common stock					312
Common stock purchase price					230
Earn-out of cash fair value					255
Mediatech | Uncollateralized Promissory Notes
Business Acquisition [Line Items]
Notes payable					$ 500		$ 500	$ 500
Number of installments | annual_installment					4
Periodic payment					$ 125

Business Acquisitions - Summary

Business Acquisitions - Summary of the Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Jul. 16, 2020	Apr. 03, 2021	Jul. 03, 2021	Jan. 02, 2021
Series of Individually Immaterial Business Acquisitions
Acquired Finite-Lived Intangible Assets [Line Items]
Cash			$ 823
Billed and unbilled receivables, net			5,631
Right-of-use assets			2,329
Property and equipment			3,475
Prepaid expenses			392
Other assets			6
Total Assets			29,330
Liabilities			(5,155)
Deferred tax liabilities			(4,852)
Net assets acquired			19,323
Consideration paid (Cash, Notes and/or stock)			36,709
Contingent earn-out liability (Cash and stock)			3,294
Total Consideration			40,003
Excess consideration over the amounts assigned to the net assets acquired (Goodwill)			20,680
Series of Individually Immaterial Business Acquisitions | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:			11,709
Series of Individually Immaterial Business Acquisitions | Trade name
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:			703
Series of Individually Immaterial Business Acquisitions | Customer backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:			1,547
Series of Individually Immaterial Business Acquisitions | Non-compete
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:			$ 2,715
Mediatech
Acquired Finite-Lived Intangible Assets [Line Items]
Cash				$ 0
Billed and unbilled receivables, net				1,439
Right-of-use assets				0
Property and equipment				28
Prepaid expenses				33
Other assets				28
Total Assets				1,856
Liabilities				(345)
Deferred tax liabilities				(86)
Net assets acquired				1,425
Consideration paid (Cash, Notes and/or stock)		$ 1,694
Contingent earn-out liability (Cash and stock)		255
Total Consideration	$ 1,949	$ 1,949
Excess consideration over the amounts assigned to the net assets acquired (Goodwill)				524
Mediatech | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:				237
Mediatech | Trade name
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:				30
Mediatech | Customer backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:				56
Mediatech | Non-compete
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:				$ 5

Business Acquisitions - Results

Business Acquisitions - Results of Operations from any Business Acquired (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jul. 03, 2021	Jul. 03, 2021
Business Combination and Asset Acquisition [Abstract]
Gross revenues	$ 8,529	$ 9,981
Income before income taxes	$ 2,795	$ 3,288

Business Acquisitions - Pro for

Business Acquisitions - Pro forma Consolidated Results of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Business Combination and Asset Acquisition [Abstract]
Gross revenues	$ 180,954	$ 168,656	$ 339,947	$ 341,214
Net income	$ 13,551	$ 4,484	$ 19,299	$ 8,974
Basic earnings per share (in dollars per Share)	$ 0.94	$ 0.36	$ 1.41	$ 0.73
Diluted earnings per share (in dollars per Share)	$ 0.91	$ 0.35	$ 1.36	$ 0.71

Billed and Unbilled Receivabl_3

Billed and Unbilled Receivables (Details) - USD ($) $ in Thousands	Jul. 03, 2021	Jan. 02, 2021
Receivables [Abstract]
Billed receivables	$ 114,779	$ 149,233
Less: allowance for doubtful accounts	(5,657)	(6,528)
Billed receivables, net	109,122	142,705
Unbilled receivables	85,996	76,609
Less: allowance for doubtful accounts	(2,410)	(2,151)
Unbilled receivables, net	$ 83,586	$ 74,458

Property and Equipment, net (De

Property and Equipment, net (Details) - USD ($) $ in Thousands	Jul. 03, 2021	Jan. 02, 2021
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 54,042	$ 48,567
Less: accumulated depreciation	(24,598)	(21,556)
Property and equipment, net	29,444	27,011
Office furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,845	3,782
Computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	16,648	15,597
Survey and field equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	27,143	22,866
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 6,406	$ 6,322

Property and Equipment, net - N

Property and Equipment, net - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 2,865	$ 2,725	$ 5,439	$ 5,426
Other Direct Costs
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 1,178	$ 1,077	$ 2,280	$ 2,179

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Schedule of Goodwill (Details) $ in Thousands	6 Months Ended
	Jul. 03, 2021USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 343,796
2021 Acquisitions	20,680
Adjustments	86
Ending balance	364,562
INF
Goodwill [Roll Forward]
Beginning balance	87,333
2021 Acquisitions	3,392
Adjustments	0
Ending balance	90,725
BTS
Goodwill [Roll Forward]
Beginning balance	78,848
2021 Acquisitions	5,790
Adjustments	86
Ending balance	84,724
GEO
Goodwill [Roll Forward]
Beginning balance	177,615
2021 Acquisitions	11,498
Adjustments	0
Ending balance	$ 189,113

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Goodwill [Line Items]
Goodwill, acquired during period			$ 20,680
Adjustments			86
Amortization expense	$ 8,529	$ 9,512	16,497	$ 17,851
IDA Engineering Private Limited
Goodwill [Line Items]
Goodwill, acquired during period			832
Terra Tech
Goodwill [Line Items]
Goodwill, acquired during period			3,392
Geodynamics
Goodwill [Line Items]
Goodwill, acquired during period			11,498
PES Environmental
Goodwill [Line Items]
Goodwill, acquired during period			4,958
Mediatech
Goodwill [Line Items]
Adjustments			$ 86

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Schedule of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended
	Jul. 03, 2021	Jan. 02, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 281,667	$ 264,993
Accumulated Amortization	(106,574)	(90,062)
Net Amount	175,093	174,931
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	194,757	183,048
Accumulated Amortization	(55,536)	(46,506)
Net Amount	$ 139,221	136,542
Customer relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful life	5 years
Customer relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful life	12 years
Trade name
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 15,220	14,517
Accumulated Amortization	(13,540)	(12,099)
Net Amount	$ 1,680	2,418
Trade name | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful life	1 year
Trade name | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful life	3 years
Customer backlog
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 26,658	25,111
Accumulated Amortization	(22,372)	(19,709)
Net Amount	$ 4,286	5,402
Customer backlog | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful life	1 year
Customer backlog | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful life	5 years
Non-compete
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 12,088	9,373
Accumulated Amortization	(7,920)	(6,909)
Net Amount	$ 4,168	2,464
Non-compete | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful life	2 years
Non-compete | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful life	5 years
Developed technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 32,944	32,944
Accumulated Amortization	(7,206)	(4,839)
Net Amount	$ 25,738	$ 28,105
Developed technology | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful life	5 years
Developed technology | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful life	7 years

Accrued Liabilities (Details)

Accrued Liabilities (Details) - USD ($) $ in Thousands	Jul. 03, 2021	Jan. 02, 2021
Payables and Accruals [Abstract]
Current portion of lease liability	$ 12,879	$ 13,161
Accrued vacation	14,542	11,998
Payroll and related taxes	11,453	10,744
Benefits	3,130	4,764
Accrued operating expenses	3,568	2,792
Professional liability reserve	902	949
Accrued interest expense	507	506
Income tax payable and other liabilities	338	411
Total	$ 47,319	$ 45,325

Notes Payable and Other Oblig_3

Notes Payable and Other Obligations - Summary of Notes Payable and Other Obligations (Details) - USD ($) $ in Thousands	Jul. 03, 2021	Jan. 02, 2021
Debt Instrument [Line Items]
Finance leases	$ 2,742	$ 2,994
Debt issuance costs, net of amortization	(3,175)	(3,630)
Total notes payable and other obligations	169,336	307,522
Current portion of notes payable and other obligations	26,989	24,196
Notes payable and other obligations, less current portion	142,347	283,326
Senior credit facility
Debt Instrument [Line Items]
Notes payable and other obligations	138,750	283,832
Uncollateralized promissory notes
Debt Instrument [Line Items]
Notes payable and other obligations	28,374	23,175
Other obligations
Debt Instrument [Line Items]
Notes payable and other obligations	$ 2,645	$ 1,151

Notes Payable and Other Oblig_4

Notes Payable and Other Obligations - Narrative (Details)	May 14, 2021USD ($)annual_installment	Mar. 25, 2021USD ($)annual_installment	Feb. 22, 2021USD ($)annual_installment	Feb. 09, 2021USD ($)annual_installment	Jul. 16, 2020USD ($)annual_installment	Dec. 20, 2019USD ($)	Jul. 01, 2019USD ($)annual_installment	Jun. 03, 2019USD ($)annual_installment	Mar. 22, 2019USD ($)annual_installment	Dec. 31, 2018USD ($)annual_installment	Nov. 02, 2018USD ($)annual_installment	Aug. 24, 2018USD ($)annual_installment	Feb. 02, 2018USD ($)annual_installment	Jan. 12, 2018USD ($)annual_installment	Jun. 06, 2017USD ($)annual_installment	May 04, 2017USD ($)annual_installment	May 01, 2017USD ($)annual_installment	Nov. 30, 2016USD ($)annual_installment	Oct. 26, 2016USD ($)annual_installment	Jul. 03, 2021USD ($)	Apr. 03, 2021USD ($)	Jun. 27, 2020USD ($)	Jul. 03, 2021USD ($)	Jun. 27, 2020USD ($)	Jan. 02, 2021USD ($)
Debt Instrument [Line Items]
Line of credit facility, current borrowing capacity						$ 215,000,000
Available increase in borrowing capacity						$ 100,000,000
Interest rate during period						5.00%
Interest rate in year 3						7.50%
Debt issuance costs																				$ 3,175,000			$ 3,175,000		$ 3,630,000
Amortization of debt issuance costs																							454,000	$ 442,000
Terra Tech
Debt Instrument [Line Items]
Purchase price			$ 864,000
Outstanding balance																				864,000			864,000
Number of equal installments | annual_installment			2
Mediatech
Debt Instrument [Line Items]
Purchase price					$ 230,000
Outstanding balance																				230,000			230,000		230,000
Number of equal installments | annual_installment					3
Contingent earn-out liability (Cash and stock)																					$ 255,000
GeoDesign, Inc
Debt Instrument [Line Items]
Purchase price							$ 425,000
Outstanding balance																				44,000			44,000		44,000
CHI Engineering Inc.
Debt Instrument [Line Items]
Purchase price											$ 3,000,000
Outstanding balance																				$ 877,000			$ 877,000		877,000
Number of equal installments | annual_installment											3
PES Environmental
Debt Instrument [Line Items]
Purchase price	$ 630,000
Outstanding balance	$ 630,000
Geodynamics
Debt Instrument [Line Items]
Purchase price		$ 21,000,000
Senior Credit Facility
Debt Instrument [Line Items]
Long-term debt						$ 150,000,000
Aggregate credit agreement						$ 320,500,000
AR Credit Agreement
Debt Instrument [Line Items]
Minimum fixed charge coverage ratio																				1.20			1.20
Promissory note interest rate																				2.30%			2.30%
Maximum allowed annual dividends																							$ 10,000
Debt issuance costs																				$ 4,123,000			4,123,000
Amortization of debt issuance costs																				227,000		$ 222,000	454,000	$ 442,000
Uncollateralized Promissory Notes | Terra Tech
Debt Instrument [Line Items]
Promissory note interest rate			2.75%
Notes payable outstanding balance			$ 3,200,000																	3,200,000			3,200,000
Number of installments | annual_installment			5
Uncollateralized Promissory Notes | Mediatech
Debt Instrument [Line Items]
Notes payable outstanding balance					$ 500,000															500,000			500,000		500,000
Number of installments | annual_installment					4
Uncollateralized Promissory Notes | GeoDesign, Inc
Debt Instrument [Line Items]
Promissory note interest rate							4.00%
Notes payable outstanding balance							$ 2,000,000													1,000,000			1,000,000		1,500,000
Number of installments | annual_installment							4
Uncollateralized Promissory Notes | CHI Engineering Inc.
Debt Instrument [Line Items]
Promissory note interest rate											3.00%
Notes payable outstanding balance																				7,500,000			7,500,000		7,500,000
Number of installments | annual_installment											4
Contingent earn-out liability (Cash and stock)											$ 15,000,000
Uncollateralized Promissory Notes | PES Environmental
Debt Instrument [Line Items]
Promissory note interest rate	2.75%
Notes payable outstanding balance	$ 1,500,000																			1,500,000			1,500,000
Number of installments | annual_installment	3
Uncollateralized Promissory Notes | Geodynamics
Debt Instrument [Line Items]
Promissory note interest rate		2.75%
Notes payable outstanding balance		$ 4,000,000																		4,000,000			4,000,000
Number of installments | annual_installment		3
Uncollateralized Promissory Notes | IDA Engineering Private Limited
Debt Instrument [Line Items]
Notes payable outstanding balance				$ 980,000																980,000			980,000
Number of installments | annual_installment				2
Uncollateralized Promissory Notes | Alta Environmental, L.P
Debt Instrument [Line Items]
Promissory note interest rate								4.00%
Outstanding balance																				1,000,000			1,000,000		1,500,000
Notes payable outstanding balance								$ 2,000,000
Number of installments | annual_installment								4
Uncollateralized Promissory Notes | Page One Consultants
Debt Instrument [Line Items]
Promissory note interest rate								3.00%
Notes payable outstanding balance																				333,000			333,000		700,000
Number of installments | annual_installment								3
Contingent earn-out liability (Cash and stock)								$ 1,000,000
Uncollateralized Promissory Notes | Acquisition of The Sextant Group
Debt Instrument [Line Items]
Promissory note interest rate									4.00%
Notes payable outstanding balance																				2,000,000			2,000,000		3,000,000
Number of installments | annual_installment									4
Contingent earn-out liability (Cash and stock)									$ 4,000,000
Uncollateralized Promissory Notes | Celtic Energy, Inc
Debt Instrument [Line Items]
Promissory note interest rate										3.00%
Notes payable outstanding balance																				97,000			97,000		100,000
Number of installments | annual_installment										3
Contingent earn-out liability (Cash and stock)										$ 300,000
Uncollateralized Promissory Notes | CALYX Engineers and Consultants Inc.
Debt Instrument [Line Items]
Promissory note interest rate												3.75%
Notes payable outstanding balance																				2,000,000			2,000,000		2,000,000
Number of installments | annual_installment												4
Contingent earn-out liability (Cash and stock)												$ 4,000,000
Periodic payments												$ 1,000,000
Uncollateralized Promissory Notes | CSA (M&E) Ltd.
Debt Instrument [Line Items]
Promissory note interest rate													3.00%
Notes payable outstanding balance																				150,000			150,000		300,000
Number of installments | annual_installment													4
Contingent earn-out liability (Cash and stock)													$ 600,000
Periodic payments													$ 150,000
Uncollateralized Promissory Notes | Butsko Utility Design, Inc.
Debt Instrument [Line Items]
Promissory note interest rate														3.00%
Notes payable outstanding balance																				300,000			300,000		500,000
Number of installments | annual_installment														4
Contingent earn-out liability (Cash and stock)														$ 1,000,000
Periodic payments														$ 250,000
Uncollateralized Promissory Notes | Richard D. Kimball Co., Inc.
Debt Instrument [Line Items]
Promissory note interest rate															3.00%
Notes payable outstanding balance																				0			0		1,375,000
Number of installments | annual_installment															4
Contingent earn-out liability (Cash and stock)															$ 5,500,000
Periodic payments															$ 1,375,000
Uncollateralized Promissory Notes | Holdrege & Kull, Consulting Engineers and Geologists
Debt Instrument [Line Items]
Promissory note interest rate																3.00%
Notes payable outstanding balance																				0			0		150,000
Number of installments | annual_installment																4
Contingent earn-out liability (Cash and stock)																$ 600,000
Periodic payments																$ 150,000
Uncollateralized Promissory Notes | Lochrane Engineering, Inc.
Debt Instrument [Line Items]
Promissory note interest rate																	3.00%
Notes payable outstanding balance																				0			0		413,000
Number of installments | annual_installment																	4
Contingent earn-out liability (Cash and stock)																	$ 1,650,000
Periodic payments																	$ 413,000
Uncollateralized Promissory Notes | The Hanna Group, Inc.
Debt Instrument [Line Items]
Promissory note interest rate																		3.00%
Notes payable outstanding balance																				430,000			430,000		430,000
Number of installments | annual_installment																		4
Contingent earn-out liability (Cash and stock)																		$ 2,700,000
Periodic payments																		$ 675,000
Uncollateralized Promissory Notes | JBA Consulting Engineers, Inc.
Debt Instrument [Line Items]
Promissory note interest rate																			3.00%
Notes payable outstanding balance																				$ 3,011,000			$ 3,011,000		$ 3,011,000
Number of installments | annual_installment																			5
Contingent earn-out liability (Cash and stock)																			$ 7,000,000
Periodic payments																			$ 1,400,000

Notes Payable and Other Oblig_5

Notes Payable and Other Obligations Notes Payable and Other Obligations - Schedule of Consolidated Leverage Ratio (Details)	May 05, 2020
Amendment Closing Date through June 27, 2020
Debt Instrument [Line Items]
Maximum consolidated leverage ratio	4,500
June 28, 2020 through October 3, 2020
Debt Instrument [Line Items]
Maximum consolidated leverage ratio	5,000
October 4, 2020 through January 2, 2021
Debt Instrument [Line Items]
Maximum consolidated leverage ratio	5,250
January 3, 2021 and April 3, 2021
Debt Instrument [Line Items]
Maximum consolidated leverage ratio	4,750
April 4, 2021 and July 3, 2021
Debt Instrument [Line Items]
Maximum consolidated leverage ratio	4,000
July 4, 2021 and thereafter
Debt Instrument [Line Items]
Maximum consolidated leverage ratio	3,500

Contingent Consideration (Detai

Contingent Consideration (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jul. 03, 2021	Jan. 02, 2021
Commitments and Contingencies Disclosure [Roll Forward]
Contingent consideration, beginning of the year	$ 2,400	$ 4,002
Additions for acquisitions	3,294	255
Reduction of liability for payments made	(622)	(1,857)
Increase of liability related to re-measurement of fair value	235	0
Total contingent consideration, end of the period	5,307	2,400
Current portion of contingent consideration	3,933	1,334
Contingent consideration, less current portion	$ 1,374	$ 1,066

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred compensation	$ 4,094	$ 3,501	$ 7,790	$ 6,880
Weighted average vesting period	$ 34,940		$ 34,940
Cost not yet recognized, term			1 year 9 months 18 days
Fair value of restricted shares vested			$ 12,426	$ 8,426
Equity Plan 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	661,858		661,858
Rate of increase decrease in shares authorized for issuance			3.50%
Equity Plan 2011 | Restricted Stock | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			2 years
Equity Plan 2011 | Restricted Stock | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			4 years

Stock-Based Compensation - Rest

Stock-Based Compensation - Restricted Stock Awards (Details) - Restricted Stock	6 Months Ended
	Jul. 03, 2021$ / sharesshares
Number of Unvested Restricted Shares of Common Stock and Restricted Stock Units
Beginning (in shares) | shares	770,183
Granted (in shares) | shares	235,418
Vested (in shares) | shares	(137,477)
Forfeited (in shares) | shares	(32,362)
Ending (in shares) | shares	835,762
Weighted Average Grant Date Fair Value
Beginning (in dollars per share) | $ / shares	$ 57.20
Granted (in dollars per share) | $ / shares	90.02
Vested (in dollars per share) | $ / shares	62.13
Forfeited (in dollars per share) | $ / shares	57.71
Ending (in dollars per share) | $ / shares	$ 65.83

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020	Jan. 02, 2021
Income Tax Disclosure [Abstract]
Deferred income tax liabilities, net	$ 29,736		$ 29,736		$ 27,791
Effective income tax rate percentage	19.70%	31.30%	(21.10%)	28.50%

Reportable Segments - Narrative

Reportable Segments - Narrative (Details)	6 Months Ended
	Jul. 03, 2021segment
Segment Reporting [Abstract]
Number of reportable segments	3
Number of operating segments	3

Reportable Segments - Summarize

Reportable Segments - Summarized Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	$ 179,503	$ 162,689	$ 332,598	$ 328,169
Segment income before taxes	16,984	6,559	24,220	12,153
Amortization expense	8,529	9,512	16,497	17,851
INF
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	97,755	87,087	185,288	170,820
BTS
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	43,818	36,641	82,423	79,752
GEO
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	37,930	38,961	64,887	77,597
Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Segment income before taxes	36,771	27,351	63,753	53,723
Operating Segments | INF
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	97,755	87,087	185,288	170,820
Segment income before taxes	19,149	15,484	35,961	28,596
Operating Segments | BTS
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	43,818	36,641	82,423	79,752
Segment income before taxes	7,501	5,409	13,766	10,828
Operating Segments | GEO
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	37,930	38,961	64,887	77,597
Segment income before taxes	10,121	6,458	14,026	14,299
Corporate
Segment Reporting, Revenue Reconciling Item [Line Items]
Segment income before taxes	$ (19,787)	$ (20,792)	$ (39,533)	$ (41,570)

Reportable Segments - Revenue f

Reportable Segments - Revenue from Contracts with Customers by Geographic Location (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	$ 179,503	$ 162,689	$ 332,598	$ 328,169
INF
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	97,755	87,087	185,288	170,820
BTS
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	43,818	36,641	82,423	79,752
GEO
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	37,930	38,961	64,887	77,597
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	174,963	160,561	324,168	322,967
United States | INF
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	97,755	87,087	185,288	170,820
United States | BTS
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	39,718	34,743	75,016	75,185
United States | GEO
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	37,490	38,731	63,864	76,962
Foreign
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	4,540	2,128	8,430	5,202
Foreign | INF
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	0	0	0	0
Foreign | BTS
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	4,100	1,898	7,407	4,567
Foreign | GEO
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross revenues	$ 440	$ 230	$ 1,023	$ 635

Reportable Segments - Revenue b

Reportable Segments - Revenue by Customer Type (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	$ 179,503	$ 162,689	$ 332,598	$ 328,169
INF
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	97,755	87,087	185,288	170,820
BTS
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	43,818	36,641	82,423	79,752
GEO
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	37,930	38,961	64,887	77,597
Public and quasi-public sector
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	118,186	111,905	225,165	221,635
Public and quasi-public sector | INF
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	76,777	67,157	145,460	132,090
Public and quasi-public sector | BTS
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	16,562	17,658	36,885	35,492
Public and quasi-public sector | GEO
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	24,847	27,090	42,820	54,053
Private sector
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	61,317	50,784	107,433	106,534
Private sector | INF
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	20,978	19,930	39,828	38,730
Private sector | BTS
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	27,256	18,983	45,538	44,260
Private sector | GEO
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	$ 13,083	$ 11,871	$ 22,067	$ 23,544

Reportable Segments - Revenue_2

Reportable Segments - Revenue by Contract Type (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	$ 179,503	$ 162,689	$ 332,598	$ 328,169
INF
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	97,755	87,087	185,288	170,820
BTS
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	43,818	36,641	82,423	79,752
GEO
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	37,930	38,961	64,887	77,597
Cost-reimbursable contracts
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	162,671	151,957	301,654	303,475
Cost-reimbursable contracts | INF
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	93,396	81,884	176,781	161,660
Cost-reimbursable contracts | BTS
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	31,453	31,167	60,162	64,377
Cost-reimbursable contracts | GEO
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	37,822	38,906	64,711	77,438
Fixed-unit price contracts
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	16,832	10,732	30,944	24,694
Fixed-unit price contracts | INF
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	4,359	5,203	8,507	9,160
Fixed-unit price contracts | BTS
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	12,365	5,474	22,261	15,375
Fixed-unit price contracts | GEO
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross revenues	$ 108	$ 55	$ 176	$ 159

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Balance Sheet Information (Details) $ in Thousands	6 Months Ended
	Jul. 03, 2021USD ($)renewal_optionoperating_lease	Jan. 02, 2021USD ($)
Leases [Abstract]
Number of equipment operating leases | operating_lease	6
Office leases initial term	12 months
Number of options to renew | renewal_option	1
Assets
Operating lease assets	$ 44,196	$ 43,607
Finance lease assets	2,719	2,946
Total leased assets	46,915	46,553
Current
Operating	(12,879)	(13,161)
Finance	(1,346)	(1,321)
Noncurrent
Operating	(33,076)	(32,290)
Finance	(1,396)	(1,673)
Total lease liabilities	$ (48,697)	$ (48,445)
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property and equipment, net	Property and equipment, net
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued liabilities	Accrued liabilities
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Current portion of notes payable and other obligations	Current portion of notes payable and other obligations
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLongTermDebtNoncurrent	us-gaap:OtherLongTermDebtNoncurrent
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Notes payable and other obligations, less current portion	Notes payable and other obligations, less current portion
Operating right of-use lease assets	$ 23,964	$ 19,096
Financing right of-use lease assets	$ 3,034	$ 2,499

Leases - Schedule of Lease Term

Leases - Schedule of Lease Term and Discount Rate (Details)	Jul. 03, 2021	Jan. 02, 2021
Weighted - Average Remaining Lease Term (Years)
Operating leases	4 years 8 months 12 days	4 years 10 months 24 days
Finance leases	1 year 10 months 24 days	2 years 1 month 6 days
Weighted - Average Discount Rate
Operating leases	4.00%	4.00%
Finance leases	7.00%	7.00%

Leases - Schedule of Suppleme_2

Leases - Schedule of Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Supplemental Cash Flow Information
Operating cash flows from operating leases	$ 3,531	$ 3,419	$ 7,048	$ 6,939
Financing cash flows from finance leases	337	268	592	535
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	$ 1,073	$ 2,995	$ 2,382	$ 7,985

Leases - Schedule of Lease Cost

Leases - Schedule of Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Lessee, Lease, Description [Line Items]
Total lease cost	$ 4,688	$ 3,806	$ 9,255	$ 7,670
Facilities and facilities related
Lessee, Lease, Description [Line Items]
Operating lease cost	3,973	3,515	7,654	7,100
Variable operating lease cost	333	0	931	0
Depreciation and amortization
Lessee, Lease, Description [Line Items]
Amortization of financing lease assets	337	260	592	509
Interest expense
Lessee, Lease, Description [Line Items]
Interest on lease liabilities	$ 45	$ 31	$ 78	$ 61

Leases - Schedule of Maturities

Leases - Schedule of Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Jul. 03, 2021	Jan. 02, 2021
Operating Leases
Remainder of 2021	$ 7,512
2022	12,729
2023	10,143
2024	7,411
2025	5,436
Thereafter	7,245
Total lease payments	50,476
Less: Interest	(4,521)
Present value of lease liabilities	45,955
Finance Leases
Remainder of 2021	1,397
2022	993
2023	522
2024	119
2025	53
Thereafter	0
Total lease payments	3,084
Less: Interest	(342)
Present value of lease liabilities	$ 2,742	$ 2,994