NV5 Global (NVEE) 10-Q 7 Nov 18 2018 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 29, 2018	Nov. 05, 2018
Document Information [Line Items]
Entity Registrant Name	NV5 Global, Inc.
Entity Central Index Key	1,532,961
Trading Symbol	nvee
Current Fiscal Year End Date	--12-29
Entity Filer Category	Accelerated Filer
Entity Current Reporting Status	Yes
Entity Emerging Growth Company	true
Entity Small Business	false
Entity Common Stock, Shares Outstanding (in shares)		12,478,257
Document Type	10-Q
Document Period End Date	Sep. 29, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Ex Transition Period	true

Consolidated Balance Sheets (Cu

Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 29, 2018	Dec. 30, 2017
Current assets:
Cash and cash equivalents	$ 56,202	$ 18,751
Billed receivables, net	85,835	70,686
Unbilled receivables, net	43,638	39,401
Prepaid expenses and other current assets	2,504	2,555
Total current assets	188,179	131,393
Property and equipment, net	10,684	8,731
Intangible assets, net	75,971	65,754
Goodwill	114,054	98,899
Other assets	1,259	1,003
Total Assets	390,147	305,780
Current liabilities:
Accounts payable	17,638	18,373
Accrued liabilities	19,602	18,994
Income taxes payable		6,102
Billings in excess of costs and estimated earnings on uncompleted contracts	1,149	665
Client deposits	198	197
Current portion of contingent consideration	1,763	977
Current portion of notes payable and other obligations	14,212	11,127
Total current liabilities	54,562	56,435
Contingent consideration, less current portion	1,232	913
Notes payable and other obligations, less current portion	19,041	57,430
Deferred income tax liabilities, net	11,966	10,905
Total liabilities	86,801	125,683
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, 12,461,900 and 10,834,770 shares issued and outstanding as of September 29, 2018 and December 30, 2017, respectively	125	108
Additional paid-in capital	229,989	125,954
Retained earnings	73,232	54,035
Total stockholders’ equity	303,346	180,097
Total liabilities and stockholders’ equity	$ 390,147	$ 305,780

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares	Sep. 29, 2018	Dec. 30, 2017
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)	12,461,900	10,834,770
Common stock, shares outstanding (in shares)	12,461,900	10,834,770

Consolidated Statements of Net

Consolidated Statements of Net Income and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Gross revenues	$ 104,185	$ 91,263	$ 302,737	$ 239,058
Direct costs (excluding depreciation and amortization):
Salaries and wages	34,475	28,219	98,542	75,235
Sub-consultant services	14,989	12,663	43,349	33,719
Other direct costs	4,747	3,635	13,539	10,276
Total direct costs	54,211	44,517	155,430	119,230
Gross Profit	49,974	46,746	147,307	119,828
Operating Expenses:
Salaries and wages, payroll taxes and benefits	24,897	23,090	76,122	62,847
General and administrative	7,556	7,362	23,348	19,931
Facilities and facilities related	3,490	3,547	10,552	9,162
Depreciation and amortization	4,057	3,788	11,660	9,542
Total operating expenses	40,000	37,787	121,682	101,482
Income from operations	9,974	8,959	25,625	18,346
Interest expense	(451)	(524)	(1,712)	(1,042)
Income before income tax expense	9,523	8,435	23,913	17,304
Income tax expense	(2,238)	(2,523)	(4,716)	(4,803)
Net Income and Comprehensive Income	$ 7,285	$ 5,912	$ 19,197	$ 12,501
Earnings per share:
Basic (in dollars per share)	$ 0.65	$ 0.58	$ 1.80	$ 1.23
Diluted (in dollars per share)	$ 0.62	$ 0.55	$ 1.71	$ 1.16
Weighted average common shares outstanding:
Basic (in shares)	11,256,946	10,211,114	10,686,040	10,155,751
Diluted (in shares)	11,701,394	10,785,630	11,205,748	10,744,619

Consolidated Statement of Chang

Consolidated Statement of Changes in Stockholders' Equity (Unaudited) - 9 months ended Sep. 29, 2018 - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 30, 2017	10,834,770
Balance at Dec. 30, 2017	$ 108	$ 125,954	$ 54,035	$ 180,097
Stock based compensation		4,541		4,541
Restricted stock issuance, net (in shares)	144,118
Restricted stock issuance, net	$ 2	(2)
Stock issuance for acquisitions (in shares)	73,012
Stock issuance for acquisitions	$ 1	4,949		4,950
Proceeds from secondary offering, net of costs (in shares)	1,270,000
Proceeds from secondary offering, net of costs	$ 13	93,456		93,469
Proceeds from exercise of warrants, net of costs (in shares)	140,000
Proceeds from exercise of warrants, net of costs	$ 1	1,091		1,092
Net income			19,197	19,197
Balance (in shares) at Sep. 29, 2018	12,461,900
Balance at Sep. 29, 2018	$ 125	$ 229,989	$ 73,232	$ 303,346

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017
Cash Flows From Operating Activities:
Net income	$ 19,197	$ 12,501
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	11,660	9,542
Provision for doubtful accounts	843	445
Stock based compensation	4,541	2,743
Change in fair value of contingent consideration	267	56
Loss on disposal property and equipment		2
Deferred income taxes	564	320
Changes in operating assets and liabilities, net of impact of acquisitions:
Billed receivables	(6,396)	(6,466)
Unbilled receivables	(3,759)	(10,565)
Prepaid expenses and other assets	819	(13)
Accounts payable	(679)	(1,827)
Accrued liabilities	(3,259)	(3,251)
Income taxes payable	(6,713)	(279)
Billings in excess of costs and estimated earnings on uncompleted contracts	485	1,641
Client deposits		822
Net cash provided by operating activities	17,570	5,671
Cash Flows From Investing Activities:
Cash paid for acquisitions (net of cash received from acquisitions)	(28,460)	(60,241)
Purchase of property and equipment	(1,582)	(1,591)
Net cash used in investing activities	(30,042)	(61,832)
Cash Flows From Financing Activities:
Proceeds from secondary offering	93,469
Proceeds from borrowings from Senior Credit Facility		47,000
Payments of borrowings from Senior Credit Facility	(36,500)	(5,000)
Payments on notes payable	(7,410)	(5,360)
Payments of contingent consideration	(728)	(563)
Proceeds from exercise of warrant	1,092
Net cash provided by financing activities	49,923	36,077
Net increase (decrease) in Cash and Cash Equivalents	37,451	(20,084)
Cash and cash equivalents – beginning of period	18,751	35,666
Cash and cash equivalents – end of period	56,202	15,582
Supplemental disclosures of cash flow information:
Cash paid for interest	1,624	843
Cash paid for income taxes	10,696	4,962
Non-cash investing and financing activities:
Contingent consideration (earn-out)	1,565	908
Notes payable and other obligations issued for acquisitions	8,356	9,371
Stock issuance for acquisitions	4,950	1,746
Capital leases	2,878
Payment of contingent consideration and other obligations with common stock		$ 62

Note 1 - Organization and Natur

Note 1 - Organization and Nature of Business Operations	9 Months Ended
	Sep. 29, 2018
Notes to Financial Statements
Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block]	Note 1 Business NV5 “NV5 NV5 not

Note 2 - Summary of Significant

Note 2 - Summary of Significant Accounting Policies	9 Months Ended
	Sep. 29, 2018
Notes to Financial Statements
Significant Accounting Policies [Text Block]	Note 2 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 NV5 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 December 30, 2017. December 30, 2017 not 2018 Fiscal Year The Company reports its financial results on a 52/53 December 31st not not Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts in the consolidated financial statements and accompanying notes. These estimates and assumptions are based on management’s most recent assessment of underlying facts and circumstances using the most recent information available. Actual results could differ significantly from these estimates and assumptions, and the differences could be material. Estimates and assumptions are evaluated periodically and adjusted when necessary. The more significant estimates affecting amounts reported in the consolidated financial statements relate to the fair value estimates used in accounting for business combinations (including the valuation of identifiable intangible assets) and contingent consideration, fair value estimates in determining the fair value of the Company’s reporting units for goodwill impairment assessment, revenue recognition over time, allowances for uncollectible accounts and provision for income taxes. NV5 NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) (in thousands, except share data) Concentration of Credit Risk not 32% nine September 29, 2018 September 30, 2017, not 10% nine September 29, 2018 September 30, 2017. 74% 73% September 29, 2018 December 30, 2017, Fair Value of Financial Instruments A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The three Level 1 Level 2 Level 3 The Company considers cash and cash equivalents, billed and unbilled receivables, accounts payable, income taxes payable, accrued liabilities and debt obligations to meet the definition of financial instruments. As of September 29, 2018 December 30, 2017, The Company applies the provisions of the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 805, Business Combinations third Several factors are considered when determining contingent consideration liabilities as part of the purchase price, including whether (i) the valuation of the acquisitions is not not NV5 NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) (in thousands, except share data) The Company reviews and re-assesses the estimated fair value of contingent consideration liabilities on a quarterly basis, and the updated fair value could differ materially from the initial estimates. The Company measures contingent consideration recognized in connection with business combinations at fair value on a recurring basis using significant unobservable inputs classified within Level 3, 10 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 first not two two NV5 August 1 Identifiable intangible assets primarily include customer backlog, customer relationships, trade names and non-compete agreements. 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 no not On August 1, 2018, not not August 1, 2018. no August 2, 2018 September 29, 2018. See Note 7 NV5 NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) (in thousands, except share data) 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. 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. In accordance with the FASB ASC 260, Earnings per Share not nine September 29, 2018 September 30, 2017 588,430 560,689 2010. not three nine September 29, 2018 September 30, 2017 three nine September 29, 2018 September 30, 2017, no 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 for the three nine September 29, 2018 September 30, 2017: Three Months Ended Nine Months Ended September 29, September 30, September 29, September 30, 2018 2017 2018 2017 Numerator: Net income – basic and diluted $ 7,285 $ 5,912 $ 19,197 $ 12,501 Denominator: Basic weighted average shares outstanding 11,256,946 10,211,114 10,686,040 10,155,751 Effect of dilutive non-vested restricted shares and units 381,250 311,677 396,577 305,392 Effect of issuable shares related to acquisitions 63,198 146,958 88,594 170,768 Effect of warrants - 115,881 34,537 112,708 Diluted weighted average shares outstanding 11,701,394 10,785,630 11,205,748 10,744,619 Warrant exercise In conjunction with the Company’s initial public offering on March 26, 2013, 140,000 March 23, 2016, $1,008 one one one $7.80 March 27, 2018. March 19, 2018, $1,092 March 21, 2018, 140,000 Secondary offering On August 9, 2018, 1,270,000 $79.00 3 No. 333 224392 30 190,500 August 13, 2018, $93,500 not NV5 NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) (in thousands, except share data) Revenue Recognition On the first 2018, 606, Revenue from Contracts with Customers 606” not 2018. 606 606 first 2018. December 30, 2017 606, not 606 not 606 three nine September 29, 2018 To determine the proper revenue recognition method, the Company evaluates whether two one one not not may The Company’s performance obligations are satisfied as work progresses or at a point in time. Gross revenues from services transferred to customers over time accounted for 92% three nine September 29, 2018. 8% three nine September 29, 2018. As of September 29, 2018, $467,135 $342,338 73% 12 24 Not not may not may not 12 may one not Contract modifications are common in the performance the Company’s contracts. Contracts modified typically result from changes in scope, specifications, design, performance, sites, or period of completion. In most cases, contract modifications are for services that are not Contract estimates are based on various assumptions to project the outcome of future events. These assumptions are dependent upon the accuracy of a variety of estimates, including engineering progress, achievement of milestones, labor productivity and cost estimates. Due to uncertainties inherent in the estimation process, it is possible that actual completion costs may may three nine September 29, 2018, not NV5 NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) (in thousands, except share data) A significant amount of the Company’s revenues are derived under multi-year contracts. The Company enters into contracts with its clients that contain two Cost-reimbursable contracts • Time and materials (“T&M”) contracts are common for smaller scale professional and technical consulting and certification services projects. Under these types of contracts, there is no may not • Cost-plus contracts are the predominant contracting method used by U.S. federal, state, and local governments. Under these type contracts, the Company charges clients for its costs, including both direct and indirect costs, plus a negotiated fee. The total estimated cost plus the negotiated fee represents the total contract value. • Lump-sum contracts typically require the performance of all of the work under the contract for a specified lump-sum fee, subject to price adjustments if the scope of the project changes or unforeseen conditions arise. Many of the Company’s lump-sum contracts are negotiated and arise in the design of projects with a specified scope and project deliverables. In most cases, we can bill additional fees if the project schedule is modified and lengthened. Fixed - unit price contracts. • Fixed-unit price contracts typically require the performance of an estimated number of units of work at an agreed price per unit, with the total payment under the contract determined by the actual number of units performed. Federal Acquisition Regulations (“FAR”), which are applicable to the Company’s federal government contracts and may may 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. Billed receivables, net represents amounts billed to clients that remain uncollected as of the balance sheet date. The amounts are stated at their estimated realizable value. The Company maintains an allowance for doubtful accounts to provide for the estimated amount of receivables that will not not 12 Unbilled receivables, net represents recognized amounts pending billing pursuant to contract terms or accounts billed after period end, and are expected to be billed and collected within the next 12 nine September 29, 2018, 14. NV5 NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) (in thousands, except share data) In certain circumstances, the contract may three nine September 29, 2018 2018 $222 $434, Practical Expedients and Exemptions The Company utilizes the portfolio method practical expedient which allows companies to account for multiple contracts as a portfolio, instead of accounting for them on a contract by contract basis (commonly known as the contract method). For the Company’s T&M contracts, the Company applies the as-invoiced practical expedient, which permits the Company to recognize revenue as the right to invoice for services performed.

Note 3 - Recent Issued Accounti

Note 3 - Recent Issued Accounting Pronouncements	9 Months Ended
	Sep. 29, 2018
Notes to Financial Statements
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	Note 3 In January 2017, 2017 04, Intangibles-Goodwill and Other (Topic 350 2 2020 2020. not In August 2016, 2016 15, Statement of Cash Flows (Topic 230 2018. 2018 not In February 2016, No. 2016 2, Leases 842 not twelve July 2018, 2018 11, Leases 842 Targeted Improvements 2019 not

Note 4 - Business Acquisitions

Note 4 - Business Acquisitions	9 Months Ended
	Sep. 29, 2018
Notes to Financial Statements
Business Combination Disclosure [Text Block]	Note 4 On August 24, 2018, $34,000, $25,000 $4,000 3.75% four $1,000, third fourth August 24, 2018 ( 9 $3,000 36,379 $2,000 120 third second 2019. On February 2, 2018, $4,200, $2,000 $600 3% four $150, third fourth February 2, 2018, $150 2,993 $250 two $125, first second $1,200 2018. $1,200 $899, third fourth 2018. On January 12, 2018, $4,250, $1,500 $1,000 3% four $250, third fourth January 12, 2018, $300 5,630 $600 two $300, first second $850 2018. $850 $666, third fourth 2018. On September 6, 2017, $990 $400 $300 3.0% three $100, second third September 6, 2017, 9 $67 1,510 $133 two first second September 6, 2017.The $90, 2017. On June 6, 2017, $22,500, $15,000 $5,500 3.0% four $1,375, third fourth June 6, 2017 ( 9 $667 18,072 $1,333 two first second June 6, 2017. third On May 4, 2017, $2,200 $1,000 $600 3.0% four $150, third fourth May 4, 2017, 9 $100 2,628 $500 2017. four $125, third fourth May 4, 2017. $500 $405, third On May 1, 2017, $4,940 $2,690 $2,200 3.0% four $550, third fourth May 1, 2017, 9 $17 441 $33 two first second May 1, 2017. $2,200 $550, 2017. $550 $413, third On April 14, 2017, $42,000, third The following table summarizes the fair values of the assets acquired and liabilities assumed as of the acquisition date for the acquisitions closed during 2018 2017: 2018 2017 Acquisitions Acquisitions Cash $ 40 $ 212 Billed and unbilled receivables 10,074 20,436 Property and equipment 1,510 1,756 Prepaid expenses 342 968 Other assets 73 337 Intangible assets: Customer relationships 13,103 29,889 Trade name 1,012 2,224 Customer backlog 2,743 1,387 Non-compete 1,907 1,703 Total Assets 30,804 58,912 Liabilities (3,803 ) (11,272 ) Deferred tax liabilities (496 ) (15,951 ) Net assets acquired 26,505 31,689 Consideration paid (Cash, Notes and/or stock) 40,095 71,439 Contingent earn-out liability (Cash and stock) 1,565 908 Total Consideration 41,660 72,347 Excess consideration over the amounts assigned to the net assets acquired (Goodwill) $ 15,155 $ 40,658 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 7 The consolidated financial statements of the Company for the three nine September 29, 2018 2018 September 29, 2018. three nine September 29, 2018, $4,984 $11,374, $1,356 $2,008, three nine September 30, 2017, $21,316 $35,524, $3,905 $6,847, three nine September 29, 2018 $213 $583, three nine September 30, 2017 $315 $892, The following table presents the unaudited, pro forma consolidated results of operations (in thousands, except per share amounts) for the three nine September 30, 2017 January 1, 2016 January 1, 2017. not January 1, 2016 January 1, 2017; Three Months Ended Nine Months Ended September 29, 2018 September 30, 2017 September 29, 2018 September 30, 2017 Gross revenues $ 109,993 $ 99,328 $ 325,255 $ 282,673 Net income $ 7,973 $ 6,372 $ 21,567 $ 14,222 Basic earnings per share $ 0.71 $ 0.63 $ 2.01 $ 1.40 Diluted earnings per share $ 0.68 $ 0.59 $ 1.92 $ 1.32 The Company has determined the supplemental disclosures pursuant to ASC 805 10 50 2h, not

Note 5 - Billed and Unbilled Re

Note 5 - Billed and Unbilled Receivables	9 Months Ended
	Sep. 29, 2018
Notes to Financial Statements
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	Note 5 Billed and Unbilled Re ceivable s Billed and Unbilled Receivables consists of the following: September 30, December 30, 2018 2017 Billed receivables $ 89,324 $ 73,130 Less: allowance for doubtful accounts (3,489 ) (2,444 ) Billed receivables, net 85,835 70,686 Unbilled receivables $ 44,836 $ 40,599 Less: allowance for doubtful accounts (1,198 ) (1,198 ) Unbilled receivables, net $ 43,638 $ 39,401

Note 6 - Property and Equipment

Note 6 - Property and Equipment, Net	9 Months Ended
	Sep. 29, 2018
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	Note 6 Property and equipment, net, consists of the following: September 30, December 30, 2018 2017 Office furniture and equipment $ 1,693 $ 1,621 Computer equipment 10,347 8,982 Survey and field equipment 5,457 2,381 Leasehold improvements 1,883 1,874 19,380 14,858 Accumulated depreciation (8,696 ) (6,127 ) Property and equipment – net $ 10,684 $ 8,731 Depreciation expense was $1,077 $3,111 three nine September 29, 2018, $760 $2,014 three nine September 30, 2017,

Note 7 - Goodwill and Intangibl

Note 7 - Goodwill and Intangible Assets	9 Months Ended
	Sep. 29, 2018
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	Note 7 Goodwill The changes in the carrying value by reportable segment for the nine September 29, 2018 December 30, 2017: Nine Months Ended December 30, 2017 Acquisitions Disposed/ Adjustments September 29, 2018 INF $ 28,675 $ 13,657 $ - $ 42,332 BTS 70,224 1,498 - 71,722 Total $ 98,899 $ 15,155 $ - $ 114,054 Fiscal Year 2017 December 31, 2016 Acquisitions Disposed/ Adjustments December 30, 2017 INF $ 25,678 $ 2,997 $ - $ 28,675 BTS 33,702 37,661 (1,139 ) 70,224 Total $ 59,380 $ 40,658 $ (1,139 ) $ 98,899 Goodwill of approximately $13,549 $1,077 nine September 29, 2018 September 30, 2017, Intangible Assets Intangible assets, net, as of September 29, 2018 December 30, 2017 September 29, 2018 December 30, 2017 Gross Carrying Amount Accumulated Amortization Net Amount Gross Carrying Amount Accumulated Amortization Net Amount Customer relationships $ 81,793 $ (16,477 ) $ 65,316 $ 68,690 $ (11,361 ) $ 57,329 Trade name 7,421 (5,907 ) 1,514 6,409 (4,911 ) 1,498 Customer backlog 10,738 (5,502 ) 5,236 7,995 (3,946 ) 4,049 Favorable lease 553 (184 ) 369 553 (147 ) 406 Non-compete 6,156 (2,620 ) 3,536 4,249 (1,777 ) 2,472 Total $ 106,661 $ (30,690 ) $ 75,971 $ 87,896 $ (22,142 ) $ 65,754 Trade names are amortized on a straight-line basis over their estimated lives ranging from 1 3 1 9 4 5 9 Amortization expense was $2,980 $8,549 three nine September 29, 2018, $3,028 $7,528 three nine September 30, 2017, As of September 29, 2018, Third Quarter Ended 2019 $ 13,301 2020 10,071 2021 8,622 2022 8,355 2023 7,819 Thereafter 27,803 Total $ 75,971

Note 8 - Accrued Liabilities

Note 8 - Accrued Liabilities	9 Months Ended
	Sep. 29, 2018
Notes to Financial Statements
Accrued Liabilities Disclosure [Text Block]	Note 8 Accrued liabilities consist of the following: September 29, December 30, 2018 2017 Deferred rent $ 793 $ 691 Payroll and related taxes 4,372 6,088 Professional liability reserve 266 316 Benefits 2,684 2,687 Accrued vacation 7,763 5,879 Unreognized tax benefits 437 437 Other 3,287 2,896 Total $ 19,602 $ 18,994

Note 9 - Notes Payable and Othe

Note 9 - Notes Payable and Other Obligations	9 Months Ended
	Sep. 29, 2018
Notes to Financial Statements
Debt Disclosure [Text Block]	Note 9 and Other Obligations Notes payable and other obligations consists of the following: September 29, December 30, 2018 2017 Senior Credit Facility $ - $ 36,500 Other Obligations 3,840 4,773 Uncollateralized promisory notes 29,413 27,284 Total Notes Payable and Other Obligations 33,253 68,557 Current portion of notes payable and other obligations (14,212 ) (11,127 ) Notes payable and other obligations, less current portion $ 19,041 $ 57,430 Senior Credit Facility On December 7, 2016, five $80,000 $60,000. $5,000 $15,000 Borrowings under the Credit Agreement are at variable rates which are, at our option, tied to a Eurocurrency rate equal to LIBOR (London Interbank Offered Rate) plus an applicable rate or a base rate denominated in U.S. dollars. Interest rates are subject to change based on our Consolidated Senior Leverage Ratio (as defined in the Credit Agreement). The Senior Credit Facility contains certain financial covenants, including a maximum leverage ratio of 3.0:1 1.20:1. September 29, 2018 December 30, 2017, September 29, 2018 December 30, 2017, $0 $36,500, Other Obligations On February 2, 2018, $250 two first second February 2, 2018. $250 $0 September 29, 2018 December 30, 2017, On January 12, 2018, $600 two first second January 12, 2018. $600 $0 September 29, 2018 December 30, 2017, On September 6, 2017, $133 two first second September 6, 2017. $66 $133 September 29, 2018 December 30, 2017, On June 6, 2017, $1,333 two first second June 6, 2017. $667 $1,333 September 29, 2018 December 30, 2017, On November 30, 2016, $1,200 two $600, first second November 30, 2016. $ 600 September 29, 2018 December 30, 2017. On October 26, 2016, $2,600 two $1,300, first second October 26, 2016. $ 1,300 September 29, 2018 December 30, 2017. On May 20, 2016, $3,000 three $1,000, second third May 20, 2016. $1,000 $2,000 September 29, 2018 December 30, 2017, Uncollateralized Promissory Notes On August 24, 2018, $4,000 3.75% four $1,000, third fourth August 24, 2018. $4,000 $0 September 29, 2018 December 30, 2017, On February 2, 2018, $600 3.0% four $150, third fourth February 2, 2018. $600 $0 September 29, 2018 December 30, 2017, On January 12, 2018, $1,000 3.0% four $250, third fourth January 12, 2018. $1,000 $0 September 29, 2018 December 30, 2017, On September 6, 2017, $300 3.0% three $100, second third September 6, 2017. $200 $300 September 29, 2018 December 30, 2017, On June 6, 2017, $5,500 3.0% four $1,375, third fourth June 6, 2017. $4,125 $5,500 September 29, 2018 December 30, 2017, On May 4, 2017, $600 3.0% four $150, third fourth May 4, 2017, $450 $600 September 29, 2018 December 30, 2017, On May 1, 2017, $1,650 3.0% four $413, third fourth May 1, 2017, $1,238 $1,650 September 29, 2018 December 30, 2017, On December 6, 2016, $3,500 3.0% four $875, third fourth December 6, 2016, $2,625 $3,500 September 29, 2018 December 30, 2017, On November 30, 2016, $2,700 3.0% four $675, third fourth November 30, 2016, $2,020 $2,025 September 29, 2018 December 30, 2017, On October 26, 2016, $7,000 3.0% five $1,400, fourth fifth October 26, 2016, $5,600 September 29, 2018 December 30, 2017. On September 12, 2016, $500 3.0% four $125, third fourth September 12, 2016, $250 $375 September 29, 2018 December 30, 2017, On May 20, 2016, $6,000 3.0% four $1,500 fourth May 20, 2016, $3,000 $4,500 September 29, 2018 December 30, 2017, On July 1, 2015, $4,000 3.0% four $1,000 fourth July 1, 2015, $1,000 $2,000 September 29, 2018 December 30, 2017, On June 24, 2015, $500 3.5% three $167 second third June 24, 2015, $0 $166 September 29, 2018 December 30, 2017, On January 30, 2015, $1,250 3.5% four $313 fourth January 30, 2015, $312 $625 September 29, 2018 December 30, 2017, Future contractual maturities of long-term debt as of September 29, 2018 Third Quarter Ended 2019 $ 14,212 2020 9,126 2021 6,755 2022 3,160 2023 - Total $ 33,253 As of September 29, 2018 December 30, 2017, 2

Note 10 - Contingent Considerat

Note 10 - Contingent Consideration	9 Months Ended
	Sep. 29, 2018
Notes to Financial Statements
Contingencies Disclosure [Text Block]	Note 10 The following table summarizes the changes in the carrying value of estimated contingent consideration: September 29, December 30, 2018 2017 Contingent consideration, beginning of the year $ 1,890 $ 2,439 Additions for acquisitions 1,565 908 Reduction of liability for payments made (727 ) (625 ) Increase (decrease) of liability related to re-measurement of fair value 267 (832 ) Total contingent consideration, end of the period 2,995 1,890 Current portion of contingent consideration (1,763 ) (977 ) Contingent consideration, less current portion $ 1,232 $ 913

Note 11 - Commitments and Conti

Note 11 - Commitments and Contingencies	9 Months Ended
	Sep. 29, 2018
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	Note 11 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 not The Company’s office leases are classified as operating leases and rent expense is included in facilities and facilities related expense in the Company’s Consolidated Statements of Net Income and Comprehensive Income. Some lease terms include rent and other concessions and rent escalation clauses which are included in computing minimum lease payments. Minimum lease payments are recognized on a straight-line basis over the minimum lease term. The variance of rent expense recognized from the amounts contractually due pursuant to the underlying leases is included in accrued liabilities in the Company’s consolidated balance sheets.

Note 12 - Stock-based Compensat

Note 12 - Stock-based Compensation	9 Months Ended
	Sep. 29, 2018
Notes to Financial Statements
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	Note 12 In October 2011, 2011 March 2013 ( “2011 2011 may September 29, 2018, 1,049,102 2011 January 1 2014 2023, 3.5% December 31, two four The following summarizes the activity of restricted stock awards during the nine September 29, 2018: Number of Unvested Restricted Shares of Common Stock and Restricted Stock Units Weighted Average Grant Date Fair Value Unvested shares as of December 30, 2017 583,051 $ 27.13 Granted 158,385 $ 63.68 Vested (125,649 ) $ 19.62 Forfeited (15,357 ) $ 32.14 Unvested shares as of September 29, 2018 600,430 $ 38.21 Share-based compensation expense relating to restricted stock awards during the three nine September 29, 2018 $1,902 $4,541, $1,161 $2,743, three nine September 30, 2017, $14,416 2.04 September 29, 2018. nine September 29, 2018 September 30, 2017 $7,422 $3,443,

Note 13 - Income Taxes

Note 13 - Income Taxes	9 Months Ended
	Sep. 29, 2018
Notes to Financial Statements
Income Tax Disclosure [Text Block]	Note 13 On December 22, 2017 “2017 2017 35% 21%, January 1, 2018. 2017 one No. 118 one 2017 As a result of the 2017 fourth 2017, $357 one 2017 three nine September 29, 2018, not December 30, 2017. not not 2018. The 2017 September 29, 2018, not The ultimate impact of the 2017 may may may 2018 118, 2017 2017 December 22, 2018. As of September 29, 2018 December 30, 2017, $11,966 $10,905, No September 29, 2018 December 30, 2017 not nine September 29, 2018, $496 The Company’s consolidated effective income tax rate was 24.5% 24.8% three nine September 29, 2018, 31.3% 33.4% three nine September 30, 2017, three nine September 29, 2018, $95 $1,210, three nine September 30, 2017, $114 $974, The Company evaluates tax positions for recognition using a more-likely-than- not 50% 2012 2014. 2012 2017 2015 2017 2014 second 2018, no 2014 At September 29, 2018 December 30, 2017, $ 437 September 29, 2018 December 30, 2017 $ 437 not 12

Note 14 - Reportable Segments

Note 14 - Reportable Segments	9 Months Ended
	Sep. 29, 2018
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	Note 1 4 – Reportable Segments The Company reports segment information in accordance with ASC Topic No. 280 Segment Reporting” No. 280” two 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 Company accounts for inter-segment revenues and transfers as if the sales and transfers were to third The following tables set forth summarized financial information concerning our reportable segments: Three Months Ended Nine Months Ended September 29, September 30, September 29, September 30, 2018 2017 2018 2017 Gross revenues INF $ 64,053 $ 49,024 $ 180,611 $ 134,446 BTS 41,441 43,262 125,344 107,997 Elimination of inter-segment revenues (1,309 ) (1,023 ) (3,218 ) (3,385 ) Total gross revenues $ 104,185 $ 91,263 $ 302,737 $ 239,058 Segment income before taxes INF $ 11,108 $ 9,559 $ 28,951 $ 23,749 BTS 7,236 6,974 21,069 15,065 Total Segment income before taxes 18,344 16,533 50,020 38,814 Corporate (1) (8,821 ) (8,098 ) (26,107 ) (21,510 ) Total income before taxes $ 9,523 $ 8,435 $ 23,913 $ 17,304 ( 1 Includes amortization of intangible assets of $2,980 $3,028 three September 29, 2018 September 30, 2017, $8,549 $7,528 nine September 29, 2018 September 30, 2017, Upon adoption of Topic 606, Revenue by geographic location was as follows: Three Months Ended September 29, 2018 Nine Months Ended September 29, 2018 INF BTS Total INF BTS Total Gross revenues by Geographic Location United States $ 63,514 $ 38,678 $ 102,192 $ 178,531 $ 115,371 $ 293,902 Foreign - 1,993 1,993 - 8,835 8,835 Total gross revenues $ 63,514 $ 40,671 $ 104,185 $ 178,531 $ 124,206 $ 302,737 Revenue by customer type was as follows: Three Months Ended September 29, 2018 Nine Months Ended September 29, 2018 INF BTS Total INF BTS Total Gross revenues by Customer Public and quasi-public sector $ 58,157 $ 15,469 $ 73,626 $ 162,193 $ 49,519 $ 211,712 Private sector 5,357 25,202 30,559 16,338 74,687 91,025 Total gross revenues $ 63,514 $ 40,671 $ 104,185 $ 178,531 $ 124,206 $ 302,737 Revenue by contract type was as follows: Three Months Ended September 29, 2018 Nine Months Ended September 29, 2018 INF BTS Total INF BTS Total Gross revenues by Contract Type Cost-reimbursable contracts $ 63,507 $ 32,196 $ 95,703 $ 178,255 $ 98,756 $ 277,011 Fixed-unit price contracts 7 8,475 8,482 276 25,450 25,726 Total gross revenues $ 63,514 $ 40,671 $ 104,185 $ 178,531 $ 124,206 $ 302,737

Note 15 - Subsequent Events

Note 15 - Subsequent Events	9 Months Ended
	Sep. 29, 2018
Notes to Financial Statements
Subsequent Events [Text Block]	Note 1 5 – Subsequent Events On November 2, 2018, $53,000, Under the acquisition method of accounting, the Company will recognize the assets acquired and the liabilities assumed at their fair values and will record an allocation of the purchase price to the tangible and identifiable intangible assets acquired and liabilities assumed based on their estimated fair values as of the acquisition date. The Company expects goodwill will be recorded based on the amount by which the purchase price exceeds the fair value of the net assets acquired, the amount attributable to the reputation of the business acquired, the workforce in place and the backlog from this acquisition. In order to determine the fair values of tangible and intangible assets acquired and liabilities assumed, the Company will engage a third fourth 2018.

Significant Accounting Policies

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 29, 2018
Accounting Policies [Abstract]
Basis of Presentation and Principles of Consolidation [Policy Text Block]	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 NV5 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 December 30, 2017. December 30, 2017 not 2018
Fiscal Period, Policy [Policy Text Block]	Fiscal Year The Company reports its financial results on a 52/53 December 31st not not
Use of Estimates, Policy [Policy Text Block]	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts in the consolidated financial statements and accompanying notes. These estimates and assumptions are based on management’s most recent assessment of underlying facts and circumstances using the most recent information available. Actual results could differ significantly from these estimates and assumptions, and the differences could be material. Estimates and assumptions are evaluated periodically and adjusted when necessary. The more significant estimates affecting amounts reported in the consolidated financial statements relate to the fair value estimates used in accounting for business combinations (including the valuation of identifiable intangible assets) and contingent consideration, fair value estimates in determining the fair value of the Company’s reporting units for goodwill impairment assessment, revenue recognition over time, allowances for uncollectible accounts and provision for income taxes.
Concentration Risk, Credit Risk, Policy [Policy Text Block]	Concentration of Credit Risk not 32% nine September 29, 2018 September 30, 2017, not 10% nine September 29, 2018 September 30, 2017. 74% 73% September 29, 2018 December 30, 2017,
Fair Value Measurement, Policy [Policy Text Block]	Fair Value of Financial Instruments A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The three Level 1 Level 2 Level 3 The Company considers cash and cash equivalents, billed and unbilled receivables, accounts payable, income taxes payable, accrued liabilities and debt obligations to meet the definition of financial instruments. As of September 29, 2018 December 30, 2017, The Company applies the provisions of the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 805, Business Combinations third Several factors are considered when determining contingent consideration liabilities as part of the purchase price, including whether (i) the valuation of the acquisitions is not not The Company reviews and re-assesses the estimated fair value of contingent consideration liabilities on a quarterly basis, and the updated fair value could differ materially from the initial estimates. The Company measures contingent consideration recognized in connection with business combinations at fair value on a recurring basis using significant unobservable inputs classified within Level 3, 10
Goodwill and Intangible Assets, Policy [Policy Text Block]	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 first not two two NV5 August 1 Identifiable intangible assets primarily include customer backlog, customer relationships, trade names and non-compete agreements. 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 no not On August 1, 2018, not not August 1, 2018. no August 2, 2018 September 29, 2018. See Note 7
Earnings Per Share, Policy [Policy Text Block]	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. 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. In accordance with the FASB ASC 260, Earnings per Share not nine September 29, 2018 September 30, 2017 588,430 560,689 2010. not three nine September 29, 2018 September 30, 2017 three nine September 29, 2018 September 30, 2017, no 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 for the three nine September 29, 2018 September 30, 2017: Three Months Ended Nine Months Ended September 29, September 30, September 29, September 30, 2018 2017 2018 2017 Numerator: Net income – basic and diluted $ 7,285 $ 5,912 $ 19,197 $ 12,501 Denominator: Basic weighted average shares outstanding 11,256,946 10,211,114 10,686,040 10,155,751 Effect of dilutive non-vested restricted shares and units 381,250 311,677 396,577 305,392 Effect of issuable shares related to acquisitions 63,198 146,958 88,594 170,768 Effect of warrants - 115,881 34,537 112,708 Diluted weighted average shares outstanding 11,701,394 10,785,630 11,205,748 10,744,619
Stockholders' Equity, Policy [Policy Text Block]	Warrant exercise In conjunction with the Company’s initial public offering on March 26, 2013, 140,000 March 23, 2016, $1,008 one one one $7.80 March 27, 2018. March 19, 2018, $1,092 March 21, 2018, 140,000
Stock Issuance [Policy Text Block]	Secondary offering On August 9, 2018, 1,270,000 $79.00 3 No. 333 224392 30 190,500 August 13, 2018, $93,500 not
Revenue from Contract with Customer [Policy Text Block]	Revenue Recognition On the first 2018, 606, Revenue from Contracts with Customers 606” not 2018. 606 606 first 2018. December 30, 2017 606, not 606 not 606 three nine September 29, 2018 To determine the proper revenue recognition method, the Company evaluates whether two one one not not may The Company’s performance obligations are satisfied as work progresses or at a point in time. Gross revenues from services transferred to customers over time accounted for 92% three nine September 29, 2018. 8% three nine September 29, 2018. As of September 29, 2018, $467,135 $342,338 73% 12 24 Not not may not may not 12 may one not Contract modifications are common in the performance the Company’s contracts. Contracts modified typically result from changes in scope, specifications, design, performance, sites, or period of completion. In most cases, contract modifications are for services that are not Contract estimates are based on various assumptions to project the outcome of future events. These assumptions are dependent upon the accuracy of a variety of estimates, including engineering progress, achievement of milestones, labor productivity and cost estimates. Due to uncertainties inherent in the estimation process, it is possible that actual completion costs may may three nine September 29, 2018, not A significant amount of the Company’s revenues are derived under multi-year contracts. The Company enters into contracts with its clients that contain two Cost-reimbursable contracts • Time and materials (“T&M”) contracts are common for smaller scale professional and technical consulting and certification services projects. Under these types of contracts, there is no may not • Cost-plus contracts are the predominant contracting method used by U.S. federal, state, and local governments. Under these type contracts, the Company charges clients for its costs, including both direct and indirect costs, plus a negotiated fee. The total estimated cost plus the negotiated fee represents the total contract value. • Lump-sum contracts typically require the performance of all of the work under the contract for a specified lump-sum fee, subject to price adjustments if the scope of the project changes or unforeseen conditions arise. Many of the Company’s lump-sum contracts are negotiated and arise in the design of projects with a specified scope and project deliverables. In most cases, we can bill additional fees if the project schedule is modified and lengthened. Fixed - unit price contracts. • Fixed-unit price contracts typically require the performance of an estimated number of units of work at an agreed price per unit, with the total payment under the contract determined by the actual number of units performed. Federal Acquisition Regulations (“FAR”), which are applicable to the Company’s federal government contracts and may may
Receivables, Policy [Policy Text Block]	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. Billed receivables, net represents amounts billed to clients that remain uncollected as of the balance sheet date. The amounts are stated at their estimated realizable value. The Company maintains an allowance for doubtful accounts to provide for the estimated amount of receivables that will not not 12 Unbilled receivables, net represents recognized amounts pending billing pursuant to contract terms or accounts billed after period end, and are expected to be billed and collected within the next 12 nine September 29, 2018, 14. In certain circumstances, the contract may three nine September 29, 2018 2018 $222 $434, Practical Expedients and Exemptions The Company utilizes the portfolio method practical expedient which allows companies to account for multiple contracts as a portfolio, instead of accounting for them on a contract by contract basis (commonly known as the contract method). For the Company’s T&M contracts, the Company applies the as-invoiced practical expedient, which permits the Company to recognize revenue as the right to invoice for services performed.

Note 2 - Summary of Significa_2

Note 2 - Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 29, 2018
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three Months Ended Nine Months Ended September 29, September 30, September 29, September 30, 2018 2017 2018 2017 Numerator: Net income – basic and diluted $ 7,285 $ 5,912 $ 19,197 $ 12,501 Denominator: Basic weighted average shares outstanding 11,256,946 10,211,114 10,686,040 10,155,751 Effect of dilutive non-vested restricted shares and units 381,250 311,677 396,577 305,392 Effect of issuable shares related to acquisitions 63,198 146,958 88,594 170,768 Effect of warrants - 115,881 34,537 112,708 Diluted weighted average shares outstanding 11,701,394 10,785,630 11,205,748 10,744,619

Note 4 - Business Acquisitions

Note 4 - Business Acquisitions (Tables)	9 Months Ended
	Sep. 29, 2018
Notes Tables
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	2018 2017 Acquisitions Acquisitions Cash $ 40 $ 212 Billed and unbilled receivables 10,074 20,436 Property and equipment 1,510 1,756 Prepaid expenses 342 968 Other assets 73 337 Intangible assets: Customer relationships 13,103 29,889 Trade name 1,012 2,224 Customer backlog 2,743 1,387 Non-compete 1,907 1,703 Total Assets 30,804 58,912 Liabilities (3,803 ) (11,272 ) Deferred tax liabilities (496 ) (15,951 ) Net assets acquired 26,505 31,689 Consideration paid (Cash, Notes and/or stock) 40,095 71,439 Contingent earn-out liability (Cash and stock) 1,565 908 Total Consideration 41,660 72,347 Excess consideration over the amounts assigned to the net assets acquired (Goodwill) $ 15,155 $ 40,658
Business Acquisition, Pro Forma Information [Table Text Block]	Three Months Ended Nine Months Ended September 29, 2018 September 30, 2017 September 29, 2018 September 30, 2017 Gross revenues $ 109,993 $ 99,328 $ 325,255 $ 282,673 Net income $ 7,973 $ 6,372 $ 21,567 $ 14,222 Basic earnings per share $ 0.71 $ 0.63 $ 2.01 $ 1.40 Diluted earnings per share $ 0.68 $ 0.59 $ 1.92 $ 1.32

Note 5 - Billed and Unbilled _2

Note 5 - Billed and Unbilled Receivables (Tables)	9 Months Ended
	Sep. 29, 2018
Notes Tables
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	September 30, December 30, 2018 2017 Billed receivables $ 89,324 $ 73,130 Less: allowance for doubtful accounts (3,489 ) (2,444 ) Billed receivables, net 85,835 70,686 Unbilled receivables $ 44,836 $ 40,599 Less: allowance for doubtful accounts (1,198 ) (1,198 ) Unbilled receivables, net $ 43,638 $ 39,401

Note 6 - Property and Equipme_2

Note 6 - Property and Equipment, Net (Tables)	9 Months Ended
	Sep. 29, 2018
Notes Tables
Property, Plant and Equipment [Table Text Block]	September 30, December 30, 2018 2017 Office furniture and equipment $ 1,693 $ 1,621 Computer equipment 10,347 8,982 Survey and field equipment 5,457 2,381 Leasehold improvements 1,883 1,874 19,380 14,858 Accumulated depreciation (8,696 ) (6,127 ) Property and equipment – net $ 10,684 $ 8,731

Note 7 - Goodwill and Intangi_2

Note 7 - Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 29, 2018
Notes Tables
Schedule of Goodwill [Table Text Block]	Nine Months Ended December 30, 2017 Acquisitions Disposed/ Adjustments September 29, 2018 INF $ 28,675 $ 13,657 $ - $ 42,332 BTS 70,224 1,498 - 71,722 Total $ 98,899 $ 15,155 $ - $ 114,054 Fiscal Year 2017 December 31, 2016 Acquisitions Disposed/ Adjustments December 30, 2017 INF $ 25,678 $ 2,997 $ - $ 28,675 BTS 33,702 37,661 (1,139 ) 70,224 Total $ 59,380 $ 40,658 $ (1,139 ) $ 98,899
Schedule of Finite-Lived Intangible Assets [Table Text Block]	September 29, 2018 December 30, 2017 Gross Carrying Amount Accumulated Amortization Net Amount Gross Carrying Amount Accumulated Amortization Net Amount Customer relationships $ 81,793 $ (16,477 ) $ 65,316 $ 68,690 $ (11,361 ) $ 57,329 Trade name 7,421 (5,907 ) 1,514 6,409 (4,911 ) 1,498 Customer backlog 10,738 (5,502 ) 5,236 7,995 (3,946 ) 4,049 Favorable lease 553 (184 ) 369 553 (147 ) 406 Non-compete 6,156 (2,620 ) 3,536 4,249 (1,777 ) 2,472 Total $ 106,661 $ (30,690 ) $ 75,971 $ 87,896 $ (22,142 ) $ 65,754
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	Third Quarter Ended 2019 $ 13,301 2020 10,071 2021 8,622 2022 8,355 2023 7,819 Thereafter 27,803 Total $ 75,971

Note 8 - Accrued Liabilities (T

Note 8 - Accrued Liabilities (Tables)	9 Months Ended
	Sep. 29, 2018
Notes Tables
Schedule of Accrued Liabilities [Table Text Block]	September 29, December 30, 2018 2017 Deferred rent $ 793 $ 691 Payroll and related taxes 4,372 6,088 Professional liability reserve 266 316 Benefits 2,684 2,687 Accrued vacation 7,763 5,879 Unreognized tax benefits 437 437 Other 3,287 2,896 Total $ 19,602 $ 18,994

Note 9 - Notes Payable and Ot_2

Note 9 - Notes Payable and Other Obligations (Tables)	9 Months Ended
	Sep. 29, 2018
Notes Tables
Schedule of Long-term Debt Instruments [Table Text Block]	September 29, December 30, 2018 2017 Senior Credit Facility $ - $ 36,500 Other Obligations 3,840 4,773 Uncollateralized promisory notes 29,413 27,284 Total Notes Payable and Other Obligations 33,253 68,557 Current portion of notes payable and other obligations (14,212 ) (11,127 ) Notes payable and other obligations, less current portion $ 19,041 $ 57,430
Schedule of Maturities of Long-term Debt [Table Text Block]	Third Quarter Ended 2019 $ 14,212 2020 9,126 2021 6,755 2022 3,160 2023 - Total $ 33,253

Note 10 - Contingent Consider_2

Note 10 - Contingent Consideration (Tables)	9 Months Ended
	Sep. 29, 2018
Notes Tables
Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table Text Block]	September 29, December 30, 2018 2017 Contingent consideration, beginning of the year $ 1,890 $ 2,439 Additions for acquisitions 1,565 908 Reduction of liability for payments made (727 ) (625 ) Increase (decrease) of liability related to re-measurement of fair value 267 (832 ) Total contingent consideration, end of the period 2,995 1,890 Current portion of contingent consideration (1,763 ) (977 ) Contingent consideration, less current portion $ 1,232 $ 913

Note 12 - Stock-based Compens_2

Note 12 - Stock-based Compensation (Tables)	9 Months Ended
	Sep. 29, 2018
Notes Tables
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]	Number of Unvested Restricted Shares of Common Stock and Restricted Stock Units Weighted Average Grant Date Fair Value Unvested shares as of December 30, 2017 583,051 $ 27.13 Granted 158,385 $ 63.68 Vested (125,649 ) $ 19.62 Forfeited (15,357 ) $ 32.14 Unvested shares as of September 29, 2018 600,430 $ 38.21

Note 14 - Reportable Segments (

Note 14 - Reportable Segments (Tables)	9 Months Ended
	Sep. 29, 2018
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Three Months Ended Nine Months Ended September 29, September 30, September 29, September 30, 2018 2017 2018 2017 Gross revenues INF $ 64,053 $ 49,024 $ 180,611 $ 134,446 BTS 41,441 43,262 125,344 107,997 Elimination of inter-segment revenues (1,309 ) (1,023 ) (3,218 ) (3,385 ) Total gross revenues $ 104,185 $ 91,263 $ 302,737 $ 239,058 Segment income before taxes INF $ 11,108 $ 9,559 $ 28,951 $ 23,749 BTS 7,236 6,974 21,069 15,065 Total Segment income before taxes 18,344 16,533 50,020 38,814 Corporate (1) (8,821 ) (8,098 ) (26,107 ) (21,510 ) Total income before taxes $ 9,523 $ 8,435 $ 23,913 $ 17,304
Revenue from External Customers by Geographic Areas [Table Text Block]	Three Months Ended September 29, 2018 Nine Months Ended September 29, 2018 INF BTS Total INF BTS Total Gross revenues by Geographic Location United States $ 63,514 $ 38,678 $ 102,192 $ 178,531 $ 115,371 $ 293,902 Foreign - 1,993 1,993 - 8,835 8,835 Total gross revenues $ 63,514 $ 40,671 $ 104,185 $ 178,531 $ 124,206 $ 302,737
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]	Three Months Ended September 29, 2018 Nine Months Ended September 29, 2018 INF BTS Total INF BTS Total Gross revenues by Customer Public and quasi-public sector $ 58,157 $ 15,469 $ 73,626 $ 162,193 $ 49,519 $ 211,712 Private sector 5,357 25,202 30,559 16,338 74,687 91,025 Total gross revenues $ 63,514 $ 40,671 $ 104,185 $ 178,531 $ 124,206 $ 302,737 Three Months Ended September 29, 2018 Nine Months Ended September 29, 2018 INF BTS Total INF BTS Total Gross revenues by Contract Type Cost-reimbursable contracts $ 63,507 $ 32,196 $ 95,703 $ 178,255 $ 98,756 $ 277,011 Fixed-unit price contracts 7 8,475 8,482 276 25,450 25,726 Total gross revenues $ 63,514 $ 40,671 $ 104,185 $ 178,531 $ 124,206 $ 302,737

Note 2 - Summary of Significa_3

Note 2 - Summary of Significant Accounting Policies 1 (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	Aug. 09, 2018	Mar. 21, 2018	Mar. 19, 2018	Mar. 23, 2013	Sep. 29, 2018	Sep. 29, 2018	Sep. 30, 2017	Dec. 30, 2017	Mar. 26, 2013
Proceeds from Warrant Exercises						$ 1,092
Class of Warrant or Right, Exercise Price of Warrants or Rights									$ 7.80
Proceeds from Issuance of Common Stock						93,469
Revenue, Remaining Performance Obligation, Amount					$ 467,135	467,135
Contract with Customer, Liability, Revenue Recognized					$ 222	$ 434
Transferred over Time [Member]
Revenue from Contract with Customer, Including Assessed Tax, Percent of Gross Revenues					92.00%	92.00%
Transferred at Point in Time [Member]
Revenue from Contract with Customer, Including Assessed Tax, Percent of Gross Revenues					8.00%	8.00%
Follow-on Offering [Member] | Firm Shares [Member]
Stock Issued During Period, Shares, New Issues	1,270,000
Shares Issued, Price Per Share	$ 79
Common Stock [Member]
Stock Issued During Period Shares Exercise of Warrants						140,000
Stock Issued During Period, Shares, New Issues						1,270,000
Underwriters [Member] | Follow-on Offering [Member] | Firm Shares [Member]
Proceeds from Issuance of Common Stock	$ 93,500
Underwriters [Member] | Follow-on Offering [Member] | Employee Stock Option [Member]
Stock Issued During Period, Shares, New Issues	190,500
Unit Warrant [Member] | Underwriter [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights									140,000
Proceeds from Warrant Exercises			$ 1,092	$ 1,008
Stock Issued During Period Shares Exercise of Warrants		140,000
Unit Warrant [Member] | Underwriter [Member] | Common Stock [Member]
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right									1
Unit Warrant [Member] | Underwriter [Member] | Warrant [Member]
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right									1
Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount						588,430	560,689
Sales Revenue, Net [Member] | Geographic Concentration Risk [Member] | CALIFORNIA [Member]
Concentration Risk, Percentage						32.00%	32.00%
Accounts Receivable [Member] | Government Contracts Concentration Risk [Member]
Concentration Risk, Percentage						74.00%		73.00%

Note 2 - Summary of Significa_4

Note 2 - Summary of Significant Accounting Policies 2 (Details Textual) $ in Thousands	Sep. 29, 2018USD ($)
Revenue, Remaining Performance Obligation, Amount	$ 467,135
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-09-29
Revenue, Remaining Performance Obligation, Amount	$ 342,338
Revenue, Remaining Performance Obligation, Percentage	73.00%

Note 2 - Summary of Significa_5

Note 2 - Summary of Significant Accounting Policies - Reconciliation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Net income – basic and diluted	$ 7,285	$ 5,912	$ 19,197	$ 12,501
Basic (in shares)	11,256,946	10,211,114	10,686,040	10,155,751
Effect of dilutive non-vested restricted shares and units (in shares)	381,250	311,677	396,577	305,392
Effect of issuable shares related to acquisitions (in shares)	63,198	146,958	88,594	170,768
Effect of warrants (in shares)		115,881	34,537	112,708
Diluted weighted average shares outstanding (in shares)	11,701,394	10,785,630	11,205,748	10,744,619

Note 4 - Business Acquisition_2

Note 4 - Business Acquisitions (Details Textual)	Aug. 24, 2018USD ($)shares	Feb. 02, 2018USD ($)shares	Jan. 12, 2018USD ($)shares	Sep. 06, 2017USD ($)shares	Jun. 06, 2017USD ($)shares	May 04, 2017USD ($)shares	May 01, 2017USD ($)shares	Apr. 14, 2017USD ($)	Sep. 29, 2018USD ($)	Sep. 30, 2017USD ($)	Sep. 29, 2018USD ($)	Sep. 30, 2017USD ($)	Dec. 30, 2017USD ($)	Dec. 31, 2016USD ($)
Business Combination, Consideration Transferred, Total											$ 41,660,000		$ 72,347,000
Payments to Acquire Businesses, Gross											728,000	$ 563,000
Business Combination, Consideration Transferred, Liabilities Incurred											1,565,000	908,000	908,000
Business Combination, Contingent Consideration, Liability, Total									$ 2,995,000		2,995,000		$ 1,890,000	$ 2,439,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual									4,984,000	$ 21,316,000	11,374,000	35,524,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual									1,356,000	3,905,000	2,008,000	6,847,000
Business Combination, Acquisition Related Costs									$ 213,000	$ 315,000	$ 583,000	$ 892,000
CALYX Engineers and Consultants Inc. [Member]
Business Combination, Consideration Transferred, Total	$ 34,000,000
Payments to Acquire Businesses, Gross	25,000,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	$ 3,000,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares	36,379
CALYX Engineers and Consultants Inc. [Member] | Uncollateralized Promissory Note [Member]
Business Combination, Consideration Transferred, Liabilities Incurred	$ 4,000,000
Debt Instrument, Interest Rate, Stated Percentage	3.75%
Business Combination, Consideration Transferred, Liabilities Incurred, Number of Equal Installments	4
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Periodic Payments	$ 1,000
Debt Instrument, Periodic Payment, Total	1,000,000
CALYX Engineers and Consultants Inc. [Member] | Cash Payable Within 120 Days [Member]
Business Combination, Consideration Transferred, Liabilities Incurred	$ 2,000,000
CSA (M&E) Ltd. [Member]
Business Combination, Consideration Transferred, Total		$ 4,200,000
Payments to Acquire Businesses, Gross		2,000,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Periodic Payments		125,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable		$ 150,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares		2,993
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned		$ 250,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Number of Equal Installments		2
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High		$ 1,200,000
Business Combination, Contingent Consideration, Liability, Total		899,000
Business Combination, Consideration Transferred, Cash and Equity Interest Issued and Issuable		$ 250,000
Business Combination, Consideration Transferred, Cash and Equity Interests Issued and Issuable, Number of Equal Installments		2
CSA (M&E) Ltd. [Member] | Uncollateralized Promissory Note [Member]
Business Combination, Consideration Transferred, Liabilities Incurred		$ 600,000
Debt Instrument, Interest Rate, Stated Percentage		3.00%
Business Combination, Consideration Transferred, Liabilities Incurred, Number of Equal Installments		4
Debt Instrument, Periodic Payment, Total		$ 150,000
Butsko Utility Design, Inc. [Member]
Business Combination, Consideration Transferred, Total			$ 4,250
Payments to Acquire Businesses, Gross			1,500
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Periodic Payments			300,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable			$ 300,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares			5,630
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned			$ 600,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Number of Equal Installments			2
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High			$ 850,000
Business Combination, Contingent Consideration, Liability, Total			666,000
Business Combination, Consideration Transferred, Cash and Equity Interest Issued and Issuable			$ 600,000
Business Combination, Consideration Transferred, Cash and Equity Interests Issued and Issuable, Number of Equal Installments			2
Butsko Utility Design, Inc. [Member] | Uncollateralized Promissory Note [Member]
Business Combination, Consideration Transferred, Liabilities Incurred			$ 1,000,000
Debt Instrument, Interest Rate, Stated Percentage			3.00%
Business Combination, Consideration Transferred, Liabilities Incurred, Number of Equal Installments			4
Debt Instrument, Periodic Payment, Total			$ 250,000
Marron and Associates, Inc. [Member]
Payments to Acquire Businesses, Gross				$ 400,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable				$ 67,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares				1,510
Business Combination, Consideration Transferred, Cash and Equity Interest Issued and Issuable				$ 133,000
Business Combination, Consideration Transferred, Cash and Equity Interests Issued and Issuable, Number of Equal Installments				2
Marron and Associates, Inc. [Member] | Uncollateralized Promissory Note [Member]
Business Combination, Contingent Consideration, Liability, Total				$ 90,000
Marron and Associates, Inc. [Member] | Maximum [Member]
Business Combination, Consideration Transferred, Total				990,000
Marron and Associates, Inc. [Member] | Uncollateralized Promissory Note [Member]
Business Combination, Consideration Transferred, Liabilities Incurred				$ 300,000
Debt Instrument, Interest Rate, Stated Percentage				3.00%
Business Combination, Consideration Transferred, Liabilities Incurred, Number of Equal Installments				3
Debt Instrument, Periodic Payment, Total				$ 100,000
Richard D. Kimball Co., Inc. [Member]
Payments to Acquire Businesses, Gross					$ 15,000,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable					$ 667,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares					18,072
Business Combination, Consideration Transferred, Cash and Equity Interest Issued and Issuable					$ 1,333,000
Business Combination, Consideration Transferred, Cash and Equity Interests Issued and Issuable, Number of Equal Installments					2
Richard D. Kimball Co., Inc. [Member] | Maximum [Member]
Business Combination, Consideration Transferred, Total					$ 22,500,000
Richard D. Kimball Co., Inc. [Member] | Uncollateralized Promissory Note [Member]
Business Combination, Consideration Transferred, Liabilities Incurred					$ 5,500,000
Debt Instrument, Interest Rate, Stated Percentage					3.00%
Business Combination, Consideration Transferred, Liabilities Incurred, Number of Equal Installments					4
Debt Instrument, Periodic Payment, Total					$ 1,375,000
Holdrege & Kull, Consulting Engineers and Geologists [Member]
Payments to Acquire Businesses, Gross						$ 1,000,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable						$ 100,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares						2,628
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High						$ 500,000
Business Combination, Contingent Consideration, Liability, Total						$ 405,000
Business Combination, Contingent Consideration Arrangements, Number of Equal Installments						4
Business Combination, Contingent Consideration Arrangements, Periodic Payments						$ 125,000
Holdrege & Kull, Consulting Engineers and Geologists [Member] | Maximum [Member]
Business Combination, Consideration Transferred, Total						2,200,000
Holdrege & Kull, Consulting Engineers and Geologists [Member] | Uncollateralized Promissory Note [Member]
Business Combination, Consideration Transferred, Liabilities Incurred						$ 600,000
Debt Instrument, Interest Rate, Stated Percentage						3.00%
Business Combination, Consideration Transferred, Liabilities Incurred, Number of Equal Installments						4
Debt Instrument, Periodic Payment, Total						$ 150,000
Lochrane Engineering, Inc. [Member]
Payments to Acquire Businesses, Gross							$ 2,690,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable							$ 17,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares							441
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High							$ 550,000
Business Combination, Contingent Consideration, Liability, Total							413,000
Business Combination, Consideration Transferred, Cash and Equity Interest Issued and Issuable							$ 33,000
Business Combination, Consideration Transferred, Cash and Equity Interests Issued and Issuable, Number of Equal Installments							2
Lochrane Engineering, Inc. [Member] | Maximum [Member]
Business Combination, Consideration Transferred, Total							$ 4,940,000
Lochrane Engineering, Inc. [Member] | Uncollateralized Promissory Note [Member]
Business Combination, Consideration Transferred, Liabilities Incurred							$ 1,650,000
Debt Instrument, Interest Rate, Stated Percentage							3.00%
Business Combination, Consideration Transferred, Liabilities Incurred, Number of Equal Installments							4
Debt Instrument, Periodic Payment, Total							$ 413,000
Bock & Clark Corporation [Member]
Business Combination, Consideration Transferred, Total								$ 42,000,000

Note 4 - Business Acquisition_3

Note 4 - Business Acquisitions - Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Dec. 30, 2017
Cash	$ 40		$ 212
Billed and unbilled receivables	10,074		20,436
Property and equipment	1,510		1,756
Prepaid expenses	342		968
Other assets	73		337
Total Assets	30,804		58,912
Liabilities	(3,803)		(11,272)
Deferred tax liabilities	(496)		(15,951)
Net assets acquired	26,505		31,689
Consideration paid (Cash, Notes and/or stock)	40,095		71,439
Contingent consideration (earn-out)	1,565	$ 908	908
Total Consideration	41,660		72,347
Excess consideration over the amounts assigned to the net assets acquired (Goodwill)	15,155		40,658
Customer Relationships [Member]
Intangible assets	13,103		29,889
Trade Names [Member]
Intangible assets	1,012		2,224
Customer Lists [Member]
Intangible assets	2,743		1,387
Noncompete Agreements [Member]
Intangible assets	$ 1,907		$ 1,703

Note 4 - Business Acquisition_4

Note 4 - Business Acquisitions - Pro Forma Consolidated Results of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Gross revenues	$ 109,993	$ 99,328	$ 325,255	$ 282,673
Net income	$ 7,973	$ 6,372	$ 21,567	$ 14,222
Basic earnings per share (in dollars per share)	$ 0.71	$ 0.63	$ 2.01	$ 1.40
Diluted earnings per share (in dollars per share)	$ 0.68	$ 0.59	$ 1.92	$ 1.32

Note 5 - Billed and Unbilled _3

Note 5 - Billed and Unbilled Receivables - Summary of Billed and Unbilled Receivables (Details) - USD ($) $ in Thousands	Sep. 29, 2018	Dec. 30, 2017
Billed receivables	$ 89,324	$ 73,130
Less: allowance for doubtful accounts	(3,489)	(2,444)
Billed receivables, net	85,835	70,686
Unbilled receivables	44,836	40,599
Less: allowance for doubtful accounts	(1,198)	(1,198)
Unbilled receivables, net	$ 43,638	$ 39,401

Note 6 - Property and Equipme_3

Note 6 - Property and Equipment, Net (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Depreciation, Total	$ 1,077	$ 760	$ 3,111	$ 2,014

Note 6 - Property and Equipme_4

Note 6 - Property and Equipment, Net - Summary of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Sep. 29, 2018	Dec. 30, 2017
Property and equipment, gross	$ 19,380	$ 14,858
Accumulated depreciation	(8,696)	(6,127)
Property and equipment, net	10,684	8,731
Furniture and Fixtures [Member]
Property and equipment, gross	1,693	1,621
Computer Equipment [Member]
Property and equipment, gross	10,347	8,982
Survey and Field Equipment [Member]
Property and equipment, gross	5,457	2,381
Leasehold Improvements [Member]
Property and equipment, gross	$ 1,883	$ 1,874

Note 7 - Goodwill and Intangi_3

Note 7 - Goodwill and Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Business Acquisition, Goodwill, Expected Tax Deductible Amount	$ 13,549	$ 1,077	$ 13,549	$ 1,077
Amortization of Intangible Assets, Total	$ 2,980	$ 3,028	$ 8,549	$ 7,528
Trade Names [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life			1 year
Trade Names [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life			3 years
Customer Lists [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life			1 year
Customer Lists [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life			9 years
Noncompete Agreements [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life			4 years
Noncompete Agreements [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life			5 years
Off-Market Favorable Lease [Member]
Finite-Lived Intangible Asset, Useful Life			9 years

Note 7 - Goodwill and Intangi_4

Note 7 - Goodwill and Intangible Assets - Goodwill (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 29, 2018	Dec. 30, 2017
Goodwill	$ 98,899	$ 59,380
Acquisitions	15,155	40,658
Disposed/Adjustments		(1,139)
Goodwill	114,054	98,899
INF [Member]
Goodwill	28,675	25,678
Acquisitions	13,657	2,997
Disposed/Adjustments
Goodwill	42,332	28,675
BTS [Member]
Goodwill	70,224	33,702
Acquisitions	1,498	37,661
Disposed/Adjustments		(1,139)
Goodwill	$ 71,722	$ 70,224

Note 7 - Goodwill and Intangi_5

Note 7 - Goodwill and Intangible Assets - Intangible Assets, Net (Details) - USD ($) $ in Thousands	Sep. 29, 2018	Dec. 30, 2017
Intangible assets, gross	$ 106,661	$ 87,896
Intangible assets, accumulated amortization	(30,690)	(22,142)
Intangible assets, net	75,971	65,754
Customer Relationships [Member]
Intangible assets, gross	81,793	68,690
Intangible assets, accumulated amortization	(16,477)	(11,361)
Intangible assets, net	65,316	57,329
Trade Names [Member]
Intangible assets, gross	7,421	6,409
Intangible assets, accumulated amortization	(5,907)	(4,911)
Intangible assets, net	1,514	1,498
Customer Lists [Member]
Intangible assets, gross	10,738	7,995
Intangible assets, accumulated amortization	(5,502)	(3,946)
Intangible assets, net	5,236	4,049
Off-Market Favorable Lease [Member]
Intangible assets, gross	553	553
Intangible assets, accumulated amortization	(184)	(147)
Intangible assets, net	369	406
Noncompete Agreements [Member]
Intangible assets, gross	6,156	4,249
Intangible assets, accumulated amortization	(2,620)	(1,777)
Intangible assets, net	$ 3,536	$ 2,472

Note 7 - Goodwill and Intangi_6

Note 7 - Goodwill and Intangible Assets - Estimated Future Amortization Expense of Intangible Assets (Details) $ in Thousands	Sep. 29, 2018USD ($)
2,019	$ 13,301
2,020	10,071
2,021	8,622
2,022	8,355
2,023	7,819
Thereafter	27,803
Total	$ 75,971

Note 8 - Accrued Liabilities -

Note 8 - Accrued Liabilities - Summary of Accrued Liabilities (Details) - USD ($) $ in Thousands	Sep. 29, 2018	Dec. 30, 2017
Deferred rent	$ 793	$ 691
Payroll and related taxes	4,372	6,088
Professional liability reserve	266	316
Benefits	2,684	2,687
Accrued vacation	7,763	5,879
Unreognized tax benefits	437	437
Other	3,287	2,896
Total	$ 19,602	$ 18,994

Note 9 - Notes Payable and Ot_3

Note 9 - Notes Payable and Other Obligations (Details Textual)	Aug. 24, 2018USD ($)	Feb. 02, 2018USD ($)	Jan. 12, 2018USD ($)	Sep. 06, 2017USD ($)	Jun. 06, 2017USD ($)	May 04, 2017USD ($)	May 01, 2017USD ($)	Dec. 07, 2016USD ($)	Dec. 06, 2016USD ($)	Nov. 30, 2016USD ($)	Oct. 26, 2016USD ($)	Sep. 12, 2016USD ($)	May 20, 2016USD ($)	Jul. 01, 2015USD ($)	Jun. 24, 2015USD ($)	Jan. 30, 2015USD ($)	Sep. 29, 2018USD ($)	Sep. 30, 2017USD ($)	Dec. 30, 2017USD ($)
Business Combination, Consideration Transferred, Liabilities Incurred																	$ 1,565,000	$ 908,000	$ 908,000
CSA (M&E) Ltd. [Member]
Business Combination, Consideration Transferred, Cash and Equity Interest Issued and Issuable		$ 250,000
Business Combination, Consideration Transferred, Cash and Equity Interests Issued and Issuable, Number of Equal Installments		2
Other Liabilities, Total																	250,000		0
Butsko Utility Design, Inc. [Member]
Business Combination, Consideration Transferred, Cash and Equity Interest Issued and Issuable			$ 600,000
Business Combination, Consideration Transferred, Cash and Equity Interests Issued and Issuable, Number of Equal Installments			2
Other Liabilities, Total																	600,000		0
Marron and Associates, Inc. [Member]
Business Combination, Consideration Transferred, Cash and Equity Interest Issued and Issuable				$ 133,000
Business Combination, Consideration Transferred, Cash and Equity Interests Issued and Issuable, Number of Equal Installments				2
Other Liabilities, Total																	66,000		133,000
Richard D. Kimball Co., Inc. [Member]
Business Combination, Consideration Transferred, Cash and Equity Interest Issued and Issuable					$ 1,333,000
Business Combination, Consideration Transferred, Cash and Equity Interests Issued and Issuable, Number of Equal Installments					2
Other Liabilities, Total																	667,000		1,333,000
The Hanna Group, Inc. [Member]
Business Combination, Consideration Transferred, Cash and Equity Interest Issued and Issuable										$ 1,200,000
Business Combination, Consideration Transferred, Cash and Equity Interests Issued and Issuable, Number of Equal Installments										2
Other Liabilities, Total																	600,000		600,000
Business Combination, Consideration Transferred, Cash and Equity Interests Issued and Issuable, Periodic Payments										$ 600,000
JBA Consulting Engineers, Inc. [Member]
Business Combination, Consideration Transferred, Cash and Equity Interest Issued and Issuable											$ 2,600,000
Business Combination, Consideration Transferred, Cash and Equity Interests Issued and Issuable, Number of Equal Installments											2
Other Liabilities, Total																	1,300,000		1,300,000
Business Combination, Consideration Transferred, Cash and Equity Interests Issued and Issuable, Periodic Payments											$ 1,300,000
Dade Moeller [Member]
Business Combination, Consideration Transferred, Cash and Equity Interest Issued and Issuable													$ 3,000,000
Business Combination, Consideration Transferred, Cash and Equity Interests Issued and Issuable, Number of Equal Installments													3
Other Liabilities, Total																	1,000,000		2,000,000
Business Combination, Consideration Transferred, Cash and Equity Interests Issued and Issuable, Periodic Payments													$ 1,000,000
Lochrane Engineering, Inc. [Member]
Business Combination, Consideration Transferred, Cash and Equity Interest Issued and Issuable							$ 33,000
Business Combination, Consideration Transferred, Cash and Equity Interests Issued and Issuable, Number of Equal Installments							2
Uncollateralized Promissory Note [Member] | CSA (M&E) Ltd. [Member]
Business Combination, Consideration Transferred, Liabilities Incurred		$ 600,000
Debt Instrument, Interest Rate, Stated Percentage		3.00%
Business Combination, Consideration Transferred, Liabilities Incurred, Number of Equal Installments		4
Debt Instrument, Periodic Payment, Total		$ 150,000
Notes Payable, Total																	600,000		0
Uncollateralized Promissory Note [Member] | Butsko Utility Design, Inc. [Member]
Business Combination, Consideration Transferred, Liabilities Incurred			$ 1,000,000
Debt Instrument, Interest Rate, Stated Percentage			3.00%
Business Combination, Consideration Transferred, Liabilities Incurred, Number of Equal Installments			4
Debt Instrument, Periodic Payment, Total			$ 250,000
Notes Payable, Total																	1,000,000		0
Uncollateralized Promissory Note [Member] | Marron and Associates, Inc. [Member]
Business Combination, Consideration Transferred, Liabilities Incurred				$ 300,000
Debt Instrument, Interest Rate, Stated Percentage				3.00%
Business Combination, Consideration Transferred, Liabilities Incurred, Number of Equal Installments				3
Debt Instrument, Periodic Payment, Total				$ 100,000
Notes Payable, Total																	200,000		300,000
Uncollateralized Promissory Note [Member] | Richard D. Kimball Co., Inc. [Member]
Business Combination, Consideration Transferred, Liabilities Incurred					$ 5,500,000
Debt Instrument, Interest Rate, Stated Percentage					3.00%
Business Combination, Consideration Transferred, Liabilities Incurred, Number of Equal Installments					4
Debt Instrument, Periodic Payment, Total					$ 1,375,000
Notes Payable, Total																	4,125,000		5,500,000
Uncollateralized Promissory Note [Member] | The Hanna Group, Inc. [Member]
Business Combination, Consideration Transferred, Liabilities Incurred										$ 2,700,000
Debt Instrument, Interest Rate, Stated Percentage										3.00%
Business Combination, Consideration Transferred, Liabilities Incurred, Number of Equal Installments										4
Debt Instrument, Periodic Payment, Total										$ 675,000
Notes Payable, Total																	2,020,000		2,025,000
Uncollateralized Promissory Note [Member] | JBA Consulting Engineers, Inc. [Member]
Business Combination, Consideration Transferred, Liabilities Incurred											$ 7,000,000
Debt Instrument, Interest Rate, Stated Percentage											3.00%
Business Combination, Consideration Transferred, Liabilities Incurred, Number of Equal Installments											5
Debt Instrument, Periodic Payment, Total											$ 1,400,000
Notes Payable, Total																	5,600,000		5,600,000
Uncollateralized Promissory Note [Member] | Dade Moeller [Member]
Business Combination, Consideration Transferred, Liabilities Incurred													$ 6,000,000
Debt Instrument, Interest Rate, Stated Percentage													3.00%
Business Combination, Consideration Transferred, Liabilities Incurred, Number of Equal Installments													4
Debt Instrument, Periodic Payment, Total													$ 1,500,000
Notes Payable, Total																	3,000,000		4,500,000
Uncollateralized Promissory Note [Member] | CALYX Engineers and Consultants Inc. [Member]
Business Combination, Consideration Transferred, Liabilities Incurred	$ 4,000,000
Debt Instrument, Interest Rate, Stated Percentage	3.75%
Business Combination, Consideration Transferred, Liabilities Incurred, Number of Equal Installments	4
Debt Instrument, Periodic Payment, Total	$ 1,000,000
Notes Payable, Total																	4,000,000		0
Uncollateralized Promissory Note [Member] | Holdrege & Kull, Consulting Engineers and Geologists [Member]
Business Combination, Consideration Transferred, Liabilities Incurred						$ 600,000
Debt Instrument, Interest Rate, Stated Percentage						3.00%
Business Combination, Consideration Transferred, Liabilities Incurred, Number of Equal Installments						4
Debt Instrument, Periodic Payment, Total						$ 150,000
Notes Payable, Total																	450,000		600,000
Uncollateralized Promissory Note [Member] | Lochrane Engineering, Inc. [Member]
Business Combination, Consideration Transferred, Liabilities Incurred							$ 1,650,000
Debt Instrument, Interest Rate, Stated Percentage							3.00%
Business Combination, Consideration Transferred, Liabilities Incurred, Number of Equal Installments							4
Debt Instrument, Periodic Payment, Total							$ 413,000
Notes Payable, Total																	1,238,000		1,650,000
Uncollateralized Promissory Note [Member] | CivilSource, Inc. [Member]
Business Combination, Consideration Transferred, Liabilities Incurred									$ 3,500,000
Debt Instrument, Interest Rate, Stated Percentage									3.00%
Business Combination, Consideration Transferred, Liabilities Incurred, Number of Equal Installments									4
Debt Instrument, Periodic Payment, Total									$ 875,000
Notes Payable, Total																	2,625,000		3,500,000
Uncollateralized Promissory Note [Member] | Weir Environmental LLC [Member]
Business Combination, Consideration Transferred, Liabilities Incurred												$ 500,000
Debt Instrument, Interest Rate, Stated Percentage												3.00%
Business Combination, Consideration Transferred, Liabilities Incurred, Number of Equal Installments												4
Debt Instrument, Periodic Payment, Total												$ 125,000
Notes Payable, Total																	250,000		375,000
Uncollateralized Promissory Note [Member] | RBA Group Inc. [Member]
Business Combination, Consideration Transferred, Liabilities Incurred														$ 4,000,000
Debt Instrument, Interest Rate, Stated Percentage														3.00%
Business Combination, Consideration Transferred, Liabilities Incurred, Number of Equal Installments														4
Debt Instrument, Periodic Payment, Total														$ 1,000,000
Notes Payable, Total																	1,000,000		2,000,000
Uncollateralized Promissory Note [Member] | Allwyn Priorities LLC [Member]
Business Combination, Consideration Transferred, Liabilities Incurred															$ 500,000
Debt Instrument, Interest Rate, Stated Percentage															3.50%
Business Combination, Consideration Transferred, Liabilities Incurred, Number of Equal Installments															3
Notes Payable, Total																	0		166,000
Debt Instrument, Periodic Payment, Principal															$ 167,000
Uncollateralized Promissory Note [Member] | Joslin Lesser and Associates [Member]
Business Combination, Consideration Transferred, Liabilities Incurred																$ 1,250,000
Debt Instrument, Interest Rate, Stated Percentage																3.50%
Business Combination, Consideration Transferred, Liabilities Incurred, Number of Equal Installments																4
Notes Payable, Total																	312,000		625,000
Debt Instrument, Periodic Payment, Principal																$ 313,000
Bank of America, N.A. [Member] | Senior Credit Facility [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Expiration Period								5 years
Line of Credit Facility, Maximum Borrowing Capacity								$ 80,000,000
Line of Credit Facility, Additional Maximum Borrowing Capacity								$ 60,000,000
Line of Credit Facility, Maximum Leverage Ratio								3
Line of Credit Facility, Minimum Fixed Charge Coverage Ratio								1.2
Long-term Line of Credit, Total																	$ 0		$ 36,500,000
Bank of America, N.A. [Member] | Senior Credit Facility [Member] | Standby Letters of Credit [Member]
Line of Credit Facility, Maximum Borrowing Capacity								$ 5,000,000
Bank of America, N.A. [Member] | Senior Credit Facility [Member] | Swingline Loans [Member]
Line of Credit Facility, Maximum Borrowing Capacity								$ 15,000,000

Note 9 - Notes Payable and Ot_4

Note 9 - Notes Payable and Other Obligations - Summary of Notes Payable (Details) - USD ($) $ in Thousands	Sep. 29, 2018	Dec. 30, 2017
Notes payable and other obligations	$ 33,253	$ 68,557
Current portion of notes payable and other obligations	(14,212)	(11,127)
Notes payable and other obligations, less current portion	19,041	57,430
Senior Credit Facility [Member]
Notes payable and other obligations		36,500
Stock Payable [Member]
Notes payable and other obligations	3,840	4,773
Uncollateralized Promissory Note [Member]
Notes payable and other obligations	$ 29,413	$ 27,284

Note 9 - Notes Payable and Ot_5

Note 9 - Notes Payable and Other Obligations - Future Contractual Maturities of Long-term Debt (Details) - USD ($) $ in Thousands	Sep. 29, 2018	Dec. 30, 2017
2,019	$ 14,212
2,020	9,126
2,021	6,755
2,022	3,160
2,023
Total	$ 33,253	$ 68,557

Note 10 - Contingent Consider_3

Note 10 - Contingent Consideration - Summary of Contingent Consideration (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 29, 2018	Dec. 30, 2017
Contingent consideration, beginning of the year	$ 1,890	$ 2,439
Additions for acquisitions	1,565	908
Reduction of liability for payments made	(727)	(625)
Increase (decrease) of liability related to re-measurement of fair value	267	(832)
Total contingent consideration, end of the period	2,995	1,890
Current portion of contingent consideration	(1,763)	(977)
Contingent consideration, less current portion	$ 1,232	$ 913

Note 12 - Stock-based Compens_3

Note 12 - Stock-based Compensation (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Restricted Stock [Member]
Allocated Share-based Compensation Expense, Total	$ 1,902	$ 1,161	$ 4,541	$ 2,743
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total	$ 14,416		$ 14,416
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			2 years 14 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value			$ 7,422	$ 3,443
Equity Plan 2011 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	1,049,102		1,049,102
Rate of Increase Decrease in Shares Authorized for Issuance			3.50%
Equity Plan 2011 [Member] | Restricted Stock [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			2 years
Equity Plan 2011 [Member] | Restricted Stock [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			4 years

Note 12 - Stock-based Compens_4

Note 12 - Stock-based Compensation - Restricted Stock Awards (Details) - Restricted Stock [Member]	9 Months Ended
	Sep. 29, 2018$ / sharesshares
Unvested, Shares (in shares) | shares	583,051
Unvested, Weighted average grant date fair value (in dollars per share) | $ / shares	$ 27.13
Granted, Shares (in shares) | shares	158,385
Granted, Weighted average grant date fair value (in dollars per share) | $ / shares	$ 63.68
Vested, Shares (in shares) | shares	(125,649)
Vested, Weighted average grant date fair value (in dollars per share) | $ / shares	$ 19.62
Forfeited, Shares (in shares) | shares	(15,357)
Forfeited, Weighted average grant date fair value (in dollars per share) | $ / shares	$ 32.14
Unvested, Shares (in shares) | shares	600,430
Unvested, Weighted average grant date fair value (in dollars per share) | $ / shares	$ 38.21

Note 13 - Income Taxes (Details

Note 13 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017	Dec. 29, 2018	Dec. 30, 2017	Sep. 30, 2016
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent						35.00%
Deferred Tax Assets, Valuation Allowance, Total	$ 0		$ 0			$ 0
Provisional Liability, Transition Tax						357
Deferred Tax Liabilities, Net, Noncurrent	$ 11,966		$ 11,966			10,905
Effective Income Tax Rate Reconciliation, Percent, Total	24.50%	31.30%	24.80%	33.40%
Income Tax Expense (Benefit), Total	$ 2,238	$ 2,523	$ 4,716	$ 4,803
Unrecognized Tax Benefits, Ending Balance	437		437			437
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	437		$ 437			$ 437	$ 570
State and Local Jurisdiction [Member] | California Franchise Tax Board [Member]
Open Tax Year			2012 2013 2014 2015 2016 2017
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]
Open Tax Year			2015 2016 2017
Accounting Standards Update 2016-09 [Member]
Income Tax Expense (Benefit), Total	95	$ 114	$ 1,210	$ 974
CSA (M&E) Ltd. [Member]
Deferred Tax Liabilities, Net, Noncurrent	$ 496		$ 496
Scenario, Forecast [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent					21.00%

Note 14 - Reportable Segments_2

Note 14 - Reportable Segments (Details Textual) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2018USD ($)	Sep. 30, 2017USD ($)	Sep. 29, 2018USD ($)	Sep. 30, 2017USD ($)
Number of Operating Segments			2
Number of Reportable Segments			2
Amortization of Intangible Assets, Total	$ 2,980	$ 3,028	$ 8,549	$ 7,528

Note 14 - Reportable Segments -

Note 14 - Reportable Segments - Summarized Financial Information (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Gross revenues		$ 104,185	$ 91,263	$ 302,737	$ 239,058
Income before taxes		9,523	8,435	23,913	17,304
INF [Member]
Gross revenues		63,514		178,531
BTS [Member]
Gross revenues		40,671		124,206
Operating Segments [Member] | INF [Member]
Gross revenues		64,053	49,024	180,611	134,446
Income before taxes		11,108	9,559	28,951	23,749
Operating Segments [Member] | BTS [Member]
Gross revenues		41,441	43,262	125,344	107,997
Income before taxes		7,236	6,974	21,069	15,065
Intersegment Eliminations [Member]
Gross revenues		(1,309)	(1,023)	(3,218)	(3,385)
Income before taxes		18,344	16,533	50,020	38,814
Corporate, Non-Segment [Member]
Income before taxes	[1]	$ (8,821)	$ (8,098)	$ (26,107)	$ (21,510)
[1]	Includes amortization of intangible assets of $2,980 and $3,028 for the three months ended September 29, 2018 and September 30, 2017, respectively, and $8,549 and $7,528 for the nine months ended September 29, 2018 and September 30, 2017, respectively.

Note 14 - Reportable Segments_3

Note 14 - Reportable Segments - Revenue by Geographic Location (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Gross revenues	$ 104,185	$ 91,263	$ 302,737	$ 239,058
INF [Member]
Gross revenues	63,514		178,531
BTS [Member]
Gross revenues	40,671		124,206
UNITED STATES
Gross revenues	102,192		293,902
UNITED STATES | INF [Member]
Gross revenues	63,514		178,531
UNITED STATES | BTS [Member]
Gross revenues	38,678		115,371
Foreign Countries [Member]
Gross revenues	1,993		8,835
Foreign Countries [Member] | INF [Member]
Gross revenues
Foreign Countries [Member] | BTS [Member]
Gross revenues	$ 1,993		$ 8,835

Note 14 - Reportable Segments_4

Note 14 - Reportable Segments - Revenue by Customer Type (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Gross revenues	$ 104,185	$ 91,263	$ 302,737	$ 239,058
Cost-Reimbursable Contracts [Member]
Gross revenues	95,703		277,011
Fixed-price Contract [Member]
Gross revenues	8,482		25,726
INF [Member]
Gross revenues	63,514		178,531
INF [Member] | Cost-Reimbursable Contracts [Member]
Gross revenues	63,507		178,255
INF [Member] | Fixed-price Contract [Member]
Gross revenues	7		276
BTS [Member]
Gross revenues	40,671		124,206
BTS [Member] | Cost-Reimbursable Contracts [Member]
Gross revenues	32,196		98,756
BTS [Member] | Fixed-price Contract [Member]
Gross revenues	8,475		25,450
Public and Quasi-Public Sector [Member]
Gross revenues	73,626		211,712
Public and Quasi-Public Sector [Member] | INF [Member]
Gross revenues	58,157		162,193
Public and Quasi-Public Sector [Member] | BTS [Member]
Gross revenues	15,469		49,519
Private Sector [Member]
Gross revenues	30,559		91,025
Private Sector [Member] | INF [Member]
Gross revenues	5,357		16,338
Private Sector [Member] | BTS [Member]
Gross revenues	$ 25,202		$ 74,687

Note 15 - Subsequent Events (De

Note 15 - Subsequent Events (Details Textual) - USD ($) $ in Thousands	Nov. 02, 2018	Sep. 29, 2018	Dec. 30, 2017
Business Combination, Consideration Transferred, Total		$ 41,660	$ 72,347
Subsequent Event [Member] | CHI Engineering Inc. [Member] | Maximum [Member]
Business Combination, Consideration Transferred, Total	$ 53,000