Exponent (EXPO) 10-Q 5 Aug 16 2016 Q2 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	6 Months Ended
	Jul. 01, 2016	Jul. 29, 2016
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jul. 1, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q2
Entity Registrant Name	EXPONENT INC
Entity Central Index Key	851,520
Current Fiscal Year End Date	--12-30
Entity Filer Category	Large Accelerated Filer
Trading Symbol	EXPO
Entity Common Stock, Shares Outstanding		25,984,414

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jul. 01, 2016	Jan. 01, 2016
Current assets:
Cash and cash equivalents	$ 113,543	$ 125,751
Short-term investments	48,518	45,842
Accounts receivable, net of allowance for contract losses and doubtful accounts of $3,619 and $2,792 at July 1, 2016 and January 1, 2016, respectively	92,309	88,577
Prepaid expenses and other assets	18,232	12,616
Total current assets	272,602	272,786
Property, equipment and leasehold improvements, net	29,041	28,485
Goodwill	8,607	8,607
Deferred income taxes	39,031	39,456
Deferred compensation plan assets	38,034	36,522
Other assets	1,040	1,651
Total assets	388,355	387,507
Current liabilities:
Accounts payable and accrued liabilities	8,686	10,580
Accrued payroll and employee benefits	47,516	62,092
Deferred revenues	5,792	7,802
Total current liabilities	61,994	80,474
Other liabilities	2,116	1,913
Deferred compensation	43,385	40,322
Deferred rent	1,810	1,994
Total liabilities	109,305	124,703
Stockholders’ equity:
Common stock, $0.001 par value; 80,000 shares authorized; 32,853 shares issued at July 1, 2016 and January 1, 2016	33	33
Additional paid-in capital	191,604	179,816
Accumulated other comprehensive income (loss)
Investment securities, available-for-sale	19	(65)
Foreign currency translation adjustments	(2,250)	(1,740)
Accumulated other comprehensive income (loss)	(2,231)	(1,805)
Retained earnings	279,196	269,259
Treasury stock, at cost; 6,868 and 7,133 shares held atJuly 1, 2016 and January 1, 2016, respectively	(189,552)	(184,499)
Total stockholders’ equity	279,050	262,804
Total liabilities and stockholders’ equity	$ 388,355	$ 387,507

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Jul. 01, 2016	Jan. 01, 2016
Accounts receivable, net of allowance for contract losses and doubtful accounts	$ 3,619	$ 2,792
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	80,000	80,000
Common stock, shares issued	32,853	32,853
Treasury stock, shares	6,868	7,133

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015
Revenues:
Revenues before reimbursements	$ 73,334	$ 75,272	$ 152,284	$ 151,413
Reimbursements	3,961	4,592	8,167	8,744
Revenues	77,295	79,864	160,451	160,157
Operating expenses:
Compensation and related expenses	47,040	45,777	99,057	96,892
Other operating expenses	7,218	6,703	14,201	13,213
Reimbursable expenses	3,961	4,592	8,167	8,744
General and administrative expenses	4,145	4,087	7,659	7,575
Total operating expenses	62,364	61,159	129,084	126,424
Operating income	14,931	18,705	31,367	33,733
Other income, net:
Interest income, net	171	34	310	68
Miscellaneous income, net	1,575	553	2,734	2,562
Total other income, net	1,746	587	3,044	2,630
Income before income taxes	16,677	19,292	34,411	36,363
Income taxes	6,224	7,595	8,608	14,333
Net income	$ 10,453	$ 11,697	$ 25,803	$ 22,030
Net income per share:
Basic	$ 0.39	$ 0.44	$ 0.97	$ 0.83
Diluted	$ 0.38	$ 0.43	$ 0.95	$ 0.8
Shares used in per share computations:
Basic	26,631	26,714	26,572	26,668
Diluted	27,264	27,368	27,256	27,386
Cash dividends declared per common share	$ 0.18	$ 0.15	$ 0.36	$ 0.3

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015
Net income	$ 10,453	$ 11,697	$ 25,803	$ 22,030
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax	(505)	165	(510)	(336)
Unrealized (losses) gains on available-for-sale investment securities arising during the period, net of tax	(1)	(10)	84	(17)
Comprehensive income	$ 9,947	$ 11,852	$ 25,377	$ 21,677

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015
Cash flows from operating activities:
Net income	$ 25,803	$ 22,030
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property, equipment and leasehold improvements	2,927	2,705
Amortization of premiums and accretion of discounts on short-term investments	14	395
Deferred rent	(184)	(7)
Provision for contract losses and doubtful accounts	1,131	509
Stock-based compensation	7,929	7,902
Deferred income tax provision	424	(1,071)
Excess tax benefit from equity incentive plans	0	(4,486)
Changes in operating assets and liabilities:
Accounts receivable	(4,863)	(7,684)
Prepaid expenses and other assets	(5,198)	1,195
Accounts payable and accrued liabilities	(1,716)	5,117
Accrued payroll and employee benefits	(9,712)	(9,446)
Deferred revenues	(2,010)	(2,339)
Net cash provided by operating activities	14,545	14,820
Cash flows from investing activities:
Capital expenditures	(3,382)	(1,714)
Purchase of short-term investments	(24,000)	(4,000)
Maturity of short-term investments	21,450	10,555
Net cash (used in) provided by investing activities	(5,932)	4,841
Cash flows from financing activities:
Excess tax benefit from equity incentive plans	0	4,486
Payroll taxes for restricted stock units	(7,613)	(7,284)
Repurchase of common stock	(4,458)	(7,004)
Exercise of share-based payment awards	1,229	631
Dividends and dividend equivalents rights	(9,515)	(8,007)
Net cash used in financing activities	(20,357)	(17,178)
Effect of foreign currency exchange rates on cash and cash equivalents	(464)	(46)
Net (decrease) increase in cash and cash equivalents	(12,208)	2,437
Cash and cash equivalents at beginning of period	125,751	129,490
Cash and cash equivalents at end of period	$ 113,543	$ 131,927

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jul. 01, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Exponent, Inc. (referred to as the “Company” or “Exponent”) is an engineering and scientific consulting firm that provides solutions to complex problems. The Company operates on a 52-53 week fiscal year ending on the Friday closest to the last day of December. The accompanying unaudited condensed consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information, the instructions to Form 10-Q and Article 10 of Regulation S-X promulgated by the Securities and Exchange Commission. Accordingly, they do not contain all the information and notes required by accounting principles generally accepted in the United States of America for complete financial statements. In the opinion of management, all adjustments which are necessary for the fair presentation of the condensed consolidated financial statements have been included and all such adjustments are of a normal and recurring nature. The operating results for the three and six months ended July 1, 2016 are not necessarily representative of the results of future quarterly or annual periods. The following information should be read in conjunction with the audited consolidated financial statements and accompanying notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended January 1, 2016 which was filed with the U.S. Securities and Exchange Commission on February 26, 2016. The unaudited condensed consolidated financial statements include the accounts of Exponent, Inc. and its subsidiaries, which are all wholly owned. All intercompany accounts and transactions have been eliminated in consolidation. Dividend. Fiscal Year 2016 Dividends Amount Per Share (in thousands) First Quarter $ 0.18 $ 4,628 Second Quarter 0.18 4,675 Total $ 0.36 $ 9,303 Fiscal Year 2015 Dividends Amount Per Share (in thousands) First Quarter $ 0.15 $ 3,858 Second Quarter 0.15 3,887 Third Quarter 0.15 3,870 Fourth Quarter 0.15 3,867 Total $ 0.60 $ 15,482 On July 19, 2016 0.18 September 23, 2016 September 2, 2016 Use of Estimates. The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the period. Significant items subject to such estimates and assumptions include accounting for revenue recognition and estimating the allowance for contract losses and doubtful accounts. Actual results could differ from those estimates. Improvements to Employee Share-Based Payment Accounting, Compensation – Stock Compensation ASU No. 2016-09 is effective for public business entities for annual reporting periods beginning after December 15, 2016, and interim periods within that reporting period. Early adoption is permitted in any interim or annual period, with any adjustments reflected as of the beginning of the fiscal year of adoption. The Company elected to early adopt ASU No. 2016-09 as of the beginning of its first quarter of fiscal 2016. During the second quarter of fiscal 2016 the Company recorded an excess tax benefit of $ 327,000 10,126,000 0.37 4,788,000 21,015,000 0.77 In connection with the early adoption of ASU No. 2016-09, the Company elected to account for forfeitures of share-based awards when they occur. This election is applied prospectively and thus prior periods were not adjusted. An adjustment of $ 23,000 Recent Accounting Pronouncements Not Yet Effective Revenue from Contracts with Customers On February 25, 2016, the FASB issued ASU No. 2016-02, Leases

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jul. 01, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 2: Fair Value Measurements The Company measures certain financial assets and liabilities at fair value on a recurring basis, including available-for-sale fixed income securities, trading fixed income and equity securities held in its deferred compensation plan and the liability associated with its deferred compensation plan. There have been no transfers between fair value measurement levels during the three and six months ended July 1, 2016 and July 3, 2015. Any transfers between fair value measurement levels would be recorded on the actual date of the event or change in circumstances that caused the transfer. Fair Value Measurements at Reporting Date Using (In thousands) Total Quoted Prices in Active Markets for Significant Other Observable Inputs Significant Unobservable Inputs Assets Money market securities (1) $ 32,211 $ 32,211 $ - $ - Fixed income available-for-sale securities (2) 48,518 - 48,518 - Fixed income trading securities held in deferred compensation plan (3) 11,852 11,852 - - Equity trading securities held in deferred compensation plan (3) 32,175 32,175 - - Total $ 124,756 $ 76,238 $ 48,518 $ - Liabilities Deferred compensation plan (4) 49,377 49,377 - - Total $ 49,377 $ 49,377 $ - $ - (1) Included in cash and cash equivalents on the Company’s unaudited condensed consolidated balance sheet. (2) Included in short-term investments on the Company’s unaudited condensed consolidated balance sheet. (3) Included in prepaid expenses and other assets and deferred compensation plan assets on the Company’s unaudited condensed consolidated balance sheet. (4) Included in accrued payroll and employee benefits and deferred compensation on the Company’s unaudited condensed consolidated balance sheet. The fair value of these certain financial assets and liabilities was determined using the following inputs at January 1, 2016: Fair Value Measurements at Reporting Date Using (In thousands) Total Quoted Prices in Active Markets for Significant Other Observable Inputs Significant Unobservable Inputs Assets Money market securities (1) $ 10,530 $ 10,530 $ - $ - Fixed income available- for-sale securities (2) 45,842 - 45,842 - Fixed income trading securities held in deferred compensation plan (3) 9,295 9,295 - - Equity trading securities held in deferred compensation plan (3) 33,645 33,645 - - Total $ 99,312 $ 53,470 $ 45,842 $ - Liabilities Deferred compensation plan (4) 46,740 46,740 - - Total $ 46,740 $ 46,740 $ - $ - (1) Included in cash and cash equivalents on the Company’s unaudited condensed consolidated balance sheet. (2) Included in short-term investments on the Company’s unaudited condensed consolidated balance sheet. (3) Included in prepaid expenses and other assets and deferred compensation plan assets on the Company’s unaudited condensed consolidated balance sheet. (4) Included in accrued payroll and employee benefits and deferred compensation on the Company’s unaudited condensed consolidated balance sheet. Fixed income available-for-sale securities as of July 1, 2016 and January 1, 2016 represent obligations of United States agencies and state and local government agencies. Fixed income and equity trading securities represent mutual funds held in the Company’s deferred compensation plan. See Note 6 for additional information about the Company’s deferred compensation plan. Amortized Unrealized Unrealized Estimated (In thousands) Cost Gains Losses Fair Value Classified as current assets: Cash $ 81,332 $ - $ - $ 81,332 Cash equivalents: Money market securities 32,211 - - 32,211 Total cash equivalents 32,211 - - 32,211 Total cash and cash equivalents 113,543 - - 113,543 Short-term investments: U.S. agency securities 47,983 31 - 48,014 State and municipal bonds 504 - - 504 Total short-term investments 48,487 31 - 48,518 Total cash, cash equivalents $ 162,030 $ 31 $ - $ 162,061 Cash, cash equivalents and short-term investments consisted of the following as of January 1, 2016: Amortized Unrealized Unrealized Estimated (In thousands) Cost Gains Losses Fair Value Classified as current assets: Cash $ 115,221 $ - $ - $ 115,221 Cash equivalents: Money market securities 10,530 - - 10,530 Total cash equivalents 10,530 - - 10,530 Total cash and cash equivalents 125,751 - - 125,751 Short-term investments: U.S. Agency securities 41,946 1 (106) 41,841 State and municipal bonds 4,002 - (1) 4,001 Total short-term investments 45,948 1 (107) 45,842 Total cash, cash equivalents $ 171,699 $ 1 $ (107) $ 171,593 Amortized Estimated (In thousands) Cost Fair Value Due within one year $ 8,487 $ 8,497 Due between one and two years 40,000 40,021 Total $ 48,487 $ 48,518 At July 1, 2016 and January 1, 2016, the Company did not have any assets or liabilities valued using significant unobservable inputs. The following financial instruments are not measured at fair value on the Company's consolidated balance sheet at July 1, 2016 and January 1, 2016, but require disclosure of their fair values: accounts receivable, other assets and accounts payable. The estimated fair value of such instruments at July 1, 2016 and January 1, 2016 approximates their carrying value as reported on the consolidated balance sheet. There were no other-than-temporary impairments or credit losses related to available-for-sale securities during the three and six months ended July 1, 2016 and July 3, 2015.

Net Income Per Share

Net Income Per Share	6 Months Ended
	Jul. 01, 2016
Earnings Per Share [Abstract]
Net Income Per Share	Note 3: Net Income Per Share Basic per share amounts are computed using the weighted-average number of common shares outstanding during the period. Diluted per share amounts are calculated using the weighted-average number of common shares outstanding during the period and, when dilutive, the weighted-average number of potential common shares from the issuance of common stock to satisfy outstanding restricted stock units and the exercise of outstanding options to purchase common stock using the treasury stock method. Three Months Ended Six Months Ended (In thousands) July 1, July 3, July 1, July 3, Shares used in basic per share computation 26,631 26,714 26,572 26,668 Effect of dilutive common stock options outstanding 127 144 124 143 Effect of dilutive restricted stock units outstanding 506 510 560 575 Shares used in diluted per share computation 27,264 27,368 27,256 27,386 There were no options excluded from the diluted per share calculations for the three and six months ended July 1, 2016. Common stock options to purchase 40,000 44.20 30,989 44.20

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Jul. 01, 2016
Share-Based Compensation [Abstract]
Stock-Based Compensation	Note 4: Stock-Based Compensation Restricted Stock Units Restricted stock unit grants are designed to attract and retain employees, and to better align employee interests with those of the Company’s stockholders. For a select group of employees, up to 40 59 The value of these restricted stock unit awards is determined based on the market price of the Company’s common stock on the date of grant. The value of fully vested restricted stock unit awards issued is recorded as a reduction to accrued bonuses. The portion of bonus expense that the Company expects to settle with fully vested restricted stock unit awards is recorded as stock-based compensation during the period the bonus is earned. The Company recorded stock-based compensation expense associated with accrued bonus awards of $ 1,451,000 1,650,000 3,168,000 3,343,000 1,206,000 980,000 4,332,000 4,111,000 Stock Options Stock options are granted for terms of ten years and generally vest 25 59 52,000 51,000 429,000 448,000 The Company uses the Black-Scholes option-pricing model to determine the fair value of options granted. The determination of the fair value of stock option awards on the date of grant using an option-pricing model is affected by the Company’s stock price as well as assumptions regarding a number of complex and subjective variables. These variables include expected stock price volatility over the term of the award, actual and projected employee stock option exercise behaviors, the risk-free interest rate and expected dividends. The Company used historical exercise and post-vesting forfeiture and expiration data to estimate the expected term of options granted. The historical volatility of the Company’s common stock over a period of time equal to the expected term of the options granted was used to estimate expected volatility. The risk-free interest rate used in the option-pricing model was based on United States Treasury zero-coupon issues with remaining terms similar to the expected term of the options. The dividend yield assumption considers the expectation of continued declaration of dividends, offset by option holders’ dividend equivalent rights. With the adoption of ASU 2016-09 as of the beginning of the first quarter of fiscal 2016 (See Recently Adopted Accounting Pronouncement), the Company accounts for forfeitures of stock-based awards when they occur. All stock-based payment awards are recognized on a straight-line basis over the requisite service periods of the awards.

Treasury Stock

Treasury Stock	6 Months Ended
	Jul. 01, 2016
Equity [Abstract]
Treasury Stock	Note 5: Treasury Stock On May 29, 2014, the Company’s Board of Directors authorized $ 35,000,000 35,000,000 The Company repurchased 90,505 4,458,000 162,833 7,004,000 42,306,000 Net losses related to the re-issuance of treasury stock to settle restricted stock unit and stock option awards of $ 5,791,000 4,943,000

Deferred Compensation Plans

Deferred Compensation Plans	6 Months Ended
	Jul. 01, 2016
Deferred Compensation Arrangements [Abstract]
Deferred Compensation Plans	Note 6: Deferred Compensation Plans The Company maintains nonqualified deferred compensation plans for the benefit of a select group of highly compensated employees. Under these plans, participants may elect to defer up to 100 44,027,000 42,940,000 As of July 1, 2016 and January 1, 2016, vested amounts due under the plans totaled $ 49,377,000 46,740,000 938,000 1,366,000 1,309,000

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	6 Months Ended
	Jul. 01, 2016
Supplemental Cash Flow Information [Abstract]
Supplemental Cash Flow Information	Note 7: Supplemental Cash Flow Information Six Months Ended (In thousands) July 1, 2016 July 3, 2015 Cash paid during period: Income taxes $ 11,808 $ 10,235 Non-cash investing and financing activities: Unrealized gain (loss) on short-term investments $ 84 $ (17) Vested stock unit awards issued to settle accrued bonuses $ 6,334 $ 6,169 Accrual for capital expenditures $ 422 $ 226

Accounts Receivable, Net

Accounts Receivable, Net	6 Months Ended
	Jul. 01, 2016
Receivables [Abstract]
Accounts Receivable, Net	Note 8: Accounts Receivable, Net July 1, January 1, (In thousands) 2016 2016 Billed accounts receivable $ 64,670 $ 62,360 Unbilled accounts receivable 31,258 29,009 Allowance for contract losses and doubtful accounts (3,619) (2,792) Total accounts receivable, net $ 92,309 $ 88,577

Segment Reporting

Segment Reporting	6 Months Ended
	Jul. 01, 2016
Disclosure Segment Information [Abstract]
Segment Reporting	Note 9: Segment Reporting The Company has two reportable operating segments based on two primary areas of service. The Engineering and Other Scientific segment is a broad service group providing technical consulting in different practices primarily in engineering. The Environmental and Health segment provides services in the area of environmental, epidemiology and health risk analysis. This segment provides a wide range of consulting services relating to environmental hazards and risks and the impact on both human health and the environment. Revenues Three Months Ended Six Months Ended (In thousands) July 1, 2016 July 3, 2015 July 1, 2016 July 3, 2015 Engineering and Other Scientific $ 60,979 $ 59,359 $ 125,789 $ 119,160 Environmental and Health 16,316 20,505 34,662 40,997 Total revenues $ 77,295 $ 79,864 $ 160,451 $ 160,157 Operating Income Three Months Ended Six Months Ended (In thousands) July 1, 2016 July 3, 2015 July 1, 2016 July 3, 2015 Engineering and Other Scientific $ 19,561 $ 19,108 $ 40,699 $ 38,353 Environmental and Health 4,028 6,631 9,223 13,095 Total segment operating income 23,589 25,739 49,922 51,448 Corporate operating expense (8,658) (7,034) (18,555) (17,715) Total operating income $ 14,931 $ 18,705 $ 31,367 $ 33,733 Capital Expenditures Three Months Ended Six Months Ended (In thousands) July 1, 2016 July 3, 2015 July 1, 2016 July 3, 2015 Engineering and Other Scientific $ 1,273 $ 819 $ 2,463 $ 1,211 Environmental and Health 38 47 61 71 Total segment capital expenditures 1,311 866 2,524 1,282 Corporate capital expenditures 590 221 858 432 Total capital expenditures $ 1,901 $ 1,087 $ 3,382 $ 1,714 Depreciation and Amortization Three Months Ended Six Months Ended (In thousands) July 1, 2016 July 3, 2015 July 1, 2016 July 3, 2015 Engineering and Other Scientific $ 1,116 $ 822 $ 2,137 $ 1,926 Environmental and Health 45 44 88 87 Total segment depreciation and 1,161 866 2,225 2,013 Corporate depreciation and 363 458 702 692 Total depreciation and $ 1,524 $ 1,324 $ 2,927 $ 2,705 No single customer comprised more than 10 10 January 1, 2016

Goodwill

Goodwill	6 Months Ended
	Jul. 01, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	Note 10: Goodwill Environmental Engineering and (In thousands) and Health Other Scientific Total Goodwill $ 8,099 $ 508 $ 8,607 There were no acquisitions, dispositions, impairments or other changes in the carrying amount of goodwill, nor any changes in the composition of the Company’s reporting units, during the three and six months ended .

Contingencies

Contingencies	6 Months Ended
	Jul. 01, 2016
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Note 11: Contingencies The Company is a party to various legal actions from time to time and may be contingently liable in connection with claims and contracts arising in the normal course of business, the outcome of which the Company believes, after consultation with legal counsel, will not have a material adverse effect on its financial condition, results of operations or liquidity. However, due to the risks and uncertainties inherent in legal proceedings, actual results could differ from current expected results. All legal costs associated with litigation are expensed as incurred.

Basis of Presentation and Signi

Basis of Presentation and Significant Accounting Policies (Policies)	6 Months Ended
	Jul. 01, 2016
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation Exponent, Inc. (referred to as the “Company” or “Exponent”) is an engineering and scientific consulting firm that provides solutions to complex problems. The Company operates on a 52-53 week fiscal year ending on the Friday closest to the last day of December. The accompanying unaudited condensed consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information, the instructions to Form 10-Q and Article 10 of Regulation S-X promulgated by the Securities and Exchange Commission. Accordingly, they do not contain all the information and notes required by accounting principles generally accepted in the United States of America for complete financial statements. In the opinion of management, all adjustments which are necessary for the fair presentation of the condensed consolidated financial statements have been included and all such adjustments are of a normal and recurring nature. The operating results for the three and six months ended July 1, 2016 are not necessarily representative of the results of future quarterly or annual periods. The following information should be read in conjunction with the audited consolidated financial statements and accompanying notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended January 1, 2016 which was filed with the U.S. Securities and Exchange Commission on February 26, 2016. The unaudited condensed consolidated financial statements include the accounts of Exponent, Inc. and its subsidiaries, which are all wholly owned. All intercompany accounts and transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates. The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the period. Significant items subject to such estimates and assumptions include accounting for revenue recognition and estimating the allowance for contract losses and doubtful accounts. Actual results could differ from those estimates.
Recent Accounting Pronouncements	Improvements to Employee Share-Based Payment Accounting, Compensation – Stock Compensation ASU No. 2016-09 is effective for public business entities for annual reporting periods beginning after December 15, 2016, and interim periods within that reporting period. Early adoption is permitted in any interim or annual period, with any adjustments reflected as of the beginning of the fiscal year of adoption. The Company elected to early adopt ASU No. 2016-09 as of the beginning of its first quarter of fiscal 2016. During the second quarter of fiscal 2016 the Company recorded an excess tax benefit of $ 327,000 10,126,000 0.37 4,788,000 21,015,000 0.77 In connection with the early adoption of ASU No. 2016-09, the Company elected to account for forfeitures of share-based awards when they occur. This election is applied prospectively and thus prior periods were not adjusted. An adjustment of $ 23,000 Recent Accounting Pronouncements Not Yet Effective Revenue from Contracts with Customers On February 25, 2016, the FASB issued ASU No. 2016-02, Leases

Basis of Presentation (Tables)

Basis of Presentation (Tables)	6 Months Ended
	Jul. 01, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Common Stock Dividends Declared Per Share	The Company declared and paid cash dividends per common share during the periods presented as follows: Fiscal Year 2016 Dividends Amount Per Share (in thousands) First Quarter $ 0.18 $ 4,628 Second Quarter 0.18 4,675 Total $ 0.36 $ 9,303 Fiscal Year 2015 Dividends Amount Per Share (in thousands) First Quarter $ 0.15 $ 3,858 Second Quarter 0.15 3,887 Third Quarter 0.15 3,870 Fourth Quarter 0.15 3,867 Total $ 0.60 $ 15,482

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jul. 01, 2016
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on Recurring Basis	The fair value of these certain financial assets and liabilities was determined using the following inputs at July 1, 2016: Fair Value Measurements at Reporting Date Using (In thousands) Total Quoted Prices in Active Markets for Significant Other Observable Inputs Significant Unobservable Inputs Assets Money market securities (1) $ 32,211 $ 32,211 $ - $ - Fixed income available-for-sale securities (2) 48,518 - 48,518 - Fixed income trading securities held in deferred compensation plan (3) 11,852 11,852 - - Equity trading securities held in deferred compensation plan (3) 32,175 32,175 - - Total $ 124,756 $ 76,238 $ 48,518 $ - Liabilities Deferred compensation plan (4) 49,377 49,377 - - Total $ 49,377 $ 49,377 $ - $ - (1) Included in cash and cash equivalents on the Company’s unaudited condensed consolidated balance sheet. (2) Included in short-term investments on the Company’s unaudited condensed consolidated balance sheet. (3) Included in prepaid expenses and other assets and deferred compensation plan assets on the Company’s unaudited condensed consolidated balance sheet. (4) Included in accrued payroll and employee benefits and deferred compensation on the Company’s unaudited condensed consolidated balance sheet. The fair value of these certain financial assets and liabilities was determined using the following inputs at January 1, 2016: Fair Value Measurements at Reporting Date Using (In thousands) Total Quoted Prices in Active Markets for Significant Other Observable Inputs Significant Unobservable Inputs Assets Money market securities (1) $ 10,530 $ 10,530 $ - $ - Fixed income available- for-sale securities (2) 45,842 - 45,842 - Fixed income trading securities held in deferred compensation plan (3) 9,295 9,295 - - Equity trading securities held in deferred compensation plan (3) 33,645 33,645 - - Total $ 99,312 $ 53,470 $ 45,842 $ - Liabilities Deferred compensation plan (4) 46,740 46,740 - - Total $ 46,740 $ 46,740 $ - $ - (1) Included in cash and cash equivalents on the Company’s unaudited condensed consolidated balance sheet. (2) Included in short-term investments on the Company’s unaudited condensed consolidated balance sheet. (3) Included in prepaid expenses and other assets and deferred compensation plan assets on the Company’s unaudited condensed consolidated balance sheet. (4) Included in accrued payroll and employee benefits and deferred compensation on the Company’s unaudited condensed consolidated balance sheet.
Cash, cash equivalents and short-term investments	Cash, cash equivalents and short-term investments consisted of the following as of July 1, 2016: Amortized Unrealized Unrealized Estimated (In thousands) Cost Gains Losses Fair Value Classified as current assets: Cash $ 81,332 $ - $ - $ 81,332 Cash equivalents: Money market securities 32,211 - - 32,211 Total cash equivalents 32,211 - - 32,211 Total cash and cash equivalents 113,543 - - 113,543 Short-term investments: U.S. agency securities 47,983 31 - 48,014 State and municipal bonds 504 - - 504 Total short-term investments 48,487 31 - 48,518 Total cash, cash equivalents $ 162,030 $ 31 $ - $ 162,061 Cash, cash equivalents and short-term investments consisted of the following as of January 1, 2016: Amortized Unrealized Unrealized Estimated (In thousands) Cost Gains Losses Fair Value Classified as current assets: Cash $ 115,221 $ - $ - $ 115,221 Cash equivalents: Money market securities 10,530 - - 10,530 Total cash equivalents 10,530 - - 10,530 Total cash and cash equivalents 125,751 - - 125,751 Short-term investments: U.S. Agency securities 41,946 1 (106) 41,841 State and municipal bonds 4,002 - (1) 4,001 Total short-term investments 45,948 1 (107) 45,842 Total cash, cash equivalents $ 171,699 $ 1 $ (107) $ 171,593
Summary of Cost and Estimated Fair Value of Short Term Fixed Income Securities	The following table summarizes the cost and estimated fair value of short-term fixed income securities classified as short-term investments based on stated effective maturities as of July 1, 2016: Amortized Estimated (In thousands) Cost Fair Value Due within one year $ 8,487 $ 8,497 Due between one and two years 40,000 40,021 Total $ 48,487 $ 48,518

Net Income Per Share (Tables)

Net Income Per Share (Tables)	6 Months Ended
	Jul. 01, 2016
Earnings Per Share [Abstract]
Reconciles Shares to Calculate Basic and Diluted Net Income Per Share	The following schedule reconciles the shares used to calculate basic and diluted net income per share: Three Months Ended Six Months Ended (In thousands) July 1, July 3, July 1, July 3, Shares used in basic per share computation 26,631 26,714 26,572 26,668 Effect of dilutive common stock options outstanding 127 144 124 143 Effect of dilutive restricted stock units outstanding 506 510 560 575 Shares used in diluted per share computation 27,264 27,368 27,256 27,386

Supplemental Cash Flow Inform22

Supplemental Cash Flow Information (Tables)	6 Months Ended
	Jul. 01, 2016
Supplemental Cash Flow Information [Abstract]
Supplemental Disclosure of Cash Flow Information	The following is supplemental disclosure of cash flow information: Six Months Ended (In thousands) July 1, 2016 July 3, 2015 Cash paid during period: Income taxes $ 11,808 $ 10,235 Non-cash investing and financing activities: Unrealized gain (loss) on short-term investments $ 84 $ (17) Vested stock unit awards issued to settle accrued bonuses $ 6,334 $ 6,169 Accrual for capital expenditures $ 422 $ 226

Accounts Receivable, Net (Table

Accounts Receivable, Net (Tables)	6 Months Ended
	Jul. 01, 2016
Receivables [Abstract]
Accounts Receivable, Net	At July 1, 2016 and January 1, 2016, accounts receivable, net, was comprised of the following: July 1, January 1, (In thousands) 2016 2016 Billed accounts receivable $ 64,670 $ 62,360 Unbilled accounts receivable 31,258 29,009 Allowance for contract losses and doubtful accounts (3,619) (2,792) Total accounts receivable, net $ 92,309 $ 88,577

Segment Reporting (Tables)

Segment Reporting (Tables)	6 Months Ended
	Jul. 01, 2016
Disclosure Segment Information [Abstract]
Segment Reporting Information, by Segment	Segment information for the three and six months ended July 1, 2016 and July 3, 2015 follows: Revenues Three Months Ended Six Months Ended (In thousands) July 1, 2016 July 3, 2015 July 1, 2016 July 3, 2015 Engineering and Other Scientific $ 60,979 $ 59,359 $ 125,789 $ 119,160 Environmental and Health 16,316 20,505 34,662 40,997 Total revenues $ 77,295 $ 79,864 $ 160,451 $ 160,157 Operating Income Three Months Ended Six Months Ended (In thousands) July 1, 2016 July 3, 2015 July 1, 2016 July 3, 2015 Engineering and Other Scientific $ 19,561 $ 19,108 $ 40,699 $ 38,353 Environmental and Health 4,028 6,631 9,223 13,095 Total segment operating income 23,589 25,739 49,922 51,448 Corporate operating expense (8,658) (7,034) (18,555) (17,715) Total operating income $ 14,931 $ 18,705 $ 31,367 $ 33,733 Capital Expenditures Three Months Ended Six Months Ended (In thousands) July 1, 2016 July 3, 2015 July 1, 2016 July 3, 2015 Engineering and Other Scientific $ 1,273 $ 819 $ 2,463 $ 1,211 Environmental and Health 38 47 61 71 Total segment capital expenditures 1,311 866 2,524 1,282 Corporate capital expenditures 590 221 858 432 Total capital expenditures $ 1,901 $ 1,087 $ 3,382 $ 1,714 Depreciation and Amortization Three Months Ended Six Months Ended (In thousands) July 1, 2016 July 3, 2015 July 1, 2016 July 3, 2015 Engineering and Other Scientific $ 1,116 $ 822 $ 2,137 $ 1,926 Environmental and Health 45 44 88 87 Total segment depreciation and 1,161 866 2,225 2,013 Corporate depreciation and 363 458 702 692 Total depreciation and $ 1,524 $ 1,324 $ 2,927 $ 2,705

Goodwill (Tables)

Goodwill (Tables)	6 Months Ended
	Jul. 01, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Breakdown of Goodwill Reported by Segment	Below is a breakdown of goodwill reported by segment as of July 1, 2016: Environmental Engineering and (In thousands) and Health Other Scientific Total Goodwill $ 8,099 $ 508 $ 8,607

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended	6 Months Ended
	Jul. 19, 2016	Jul. 01, 2016	Jul. 01, 2016	Jul. 03, 2015
Excess Tax Benefit [Line Items]
Excess Tax Benefit From Share Based Compensation Operating Activities			$ 0	$ 4,486,000
New Accounting Pronouncement, Early Adoption, Effect
Excess Tax Benefit [Line Items]
Net Income Loss Attributable to Parent Excluding Excess Tax Benefit		$ 10,126,000	21,015,000
Excess Tax Benefit From Share Based Compensation Operating Activities		$ 327,000	4,788,000
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Retained Earnings			$ 23,000
Earnings Per Share Diluted Excluding Excess Tax Benefit		$ 0.37	$ 0.77
Subsequent Event
Excess Tax Benefit [Line Items]
Common stock, dividends per share declared, subsequent event	$ 0.18
Dividends Payable, Date to be Paid	Sep. 23, 2016
Dividends Payable, Date of Record	Sep. 2, 2016
Dividends Payable, Date Declared	Jul. 19, 2016

Common Stock Dividends Declared

Common Stock Dividends Declared And Paid Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						6 Months Ended	12 Months Ended
	Jul. 01, 2016	Apr. 01, 2016	Jan. 01, 2016	Oct. 02, 2015	Jul. 03, 2015	Apr. 03, 2015	Jul. 01, 2016	Jan. 01, 2016
Class of Stock [Line Items]
Dividends Per Share	$ 0.18	$ 0.18	$ 0.15	$ 0.15	$ 0.15	$ 0.15	$ 0.36	$ 0.6
Amount	$ 4,675	$ 4,628	$ 3,867	$ 3,870	$ 3,887	$ 3,858	$ 9,303	$ 15,482

Assets and Liabilities Measured

Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands		Jul. 01, 2016	Jan. 01, 2016
Assets
Money market securities	[1]	$ 32,211	$ 10,530
Total		124,756	99,312
Liabilities
Deferred compensation plan	[2]	49,377	46,740
Total		49,377	46,740
Fixed income securities
Assets
Fixed income available-for-sale securities	[3]	48,518	45,842
Fixed income trading securities held in deferred compensation plan	[4]	11,852	9,295
Equity securities
Assets
Equity trading securities held in deferred compensation plan	[4]	32,175	33,645
Fair Value, Inputs, Level 1
Assets
Money market securities	[1]	32,211	10,530
Total		76,238	53,470
Liabilities
Deferred compensation plan	[2]	49,377	46,740
Total		49,377	46,740
Fair Value, Inputs, Level 1 | Fixed income securities
Assets
Fixed income available-for-sale securities	[3]	0	0
Fixed income trading securities held in deferred compensation plan	[4]	11,852	9,295
Fair Value, Inputs, Level 1 | Equity securities
Assets
Equity trading securities held in deferred compensation plan	[4]	32,175	33,645
Fair Value, Inputs, Level 2
Assets
Money market securities	[1]	0	0
Total		48,518	45,842
Liabilities
Deferred compensation plan	[2]	0	0
Total		0	0
Fair Value, Inputs, Level 2 | Fixed income securities
Assets
Fixed income available-for-sale securities	[3]	48,518	45,842
Fixed income trading securities held in deferred compensation plan	[4]	0	0
Fair Value, Inputs, Level 2 | Equity securities
Assets
Equity trading securities held in deferred compensation plan	[4]	0	0
Fair Value, Inputs, Level 3
Assets
Money market securities	[1]	0	0
Total		0	0
Liabilities
Deferred compensation plan	[2]	0	0
Total		0	0
Fair Value, Inputs, Level 3 | Fixed income securities
Assets
Fixed income available-for-sale securities	[3]	0	0
Fixed income trading securities held in deferred compensation plan	[4]	0	0
Fair Value, Inputs, Level 3 | Equity securities
Assets
Equity trading securities held in deferred compensation plan	[4]	$ 0	$ 0
[1]	Included in cash and cash equivalents on the Company’s unaudited condensed consolidated balance sheet.
[2]	Included in accrued payroll and employee benefits and deferred compensation on the Company’s unaudited condensed consolidated balance sheet.
[3]	Included in short-term investments on the Company’s unaudited condensed consolidated balance sheet.
[4]	Included in prepaid expenses and other assets and deferred compensation plan assets on the Company’s unaudited condensed consolidated balance sheet.

Cash, Cash Equivalents And Shor

Cash, Cash Equivalents And Short Term Investments (Detail) - USD ($) $ in Thousands	Jul. 01, 2016	Jan. 01, 2016
Fair Value Measurements [Line Items]
Amortized Cost	$ 162,030	$ 171,699
Unrealized Gains	31	1
Unrealized Losses	0	(107)
Estimated Fair Value	162,061	171,593
U.S. Agency Securities
Fair Value Measurements [Line Items]
Amortized Cost	47,983	41,946
Unrealized Gains	31	1
Unrealized Losses	0	(106)
Estimated Fair Value	48,014	41,841
Cash
Fair Value Measurements [Line Items]
Amortized Cost	81,332	115,221
Unrealized Gains	0	0
Unrealized Losses	0	0
Estimated Fair Value	81,332	115,221
Money market securities
Fair Value Measurements [Line Items]
Amortized Cost	32,211	10,530
Unrealized Gains	0	0
Unrealized Losses	0	0
Estimated Fair Value	32,211	10,530
Total cash equivalents
Fair Value Measurements [Line Items]
Amortized Cost	32,211	10,530
Unrealized Gains	0	0
Unrealized Losses	0	0
Estimated Fair Value	32,211	10,530
Total cash and cash equivalents
Fair Value Measurements [Line Items]
Amortized Cost	113,543	125,751
Unrealized Gains	0	0
Unrealized Losses	0	0
Estimated Fair Value	113,543	125,751
State and municipal bonds
Fair Value Measurements [Line Items]
Amortized Cost	504	4,002
Unrealized Gains	0	0
Unrealized Losses	0	(1)
Estimated Fair Value	504	4,001
Total short-term investments
Fair Value Measurements [Line Items]
Amortized Cost	48,487	45,948
Unrealized Gains	31	1
Unrealized Losses	0	(107)
Estimated Fair Value	$ 48,518	$ 45,842

Summarizes Cost And Estimated F

Summarizes Cost And Estimated Fair Value Of Short Term Fixed Income Securities (Detail) - USD ($) $ in Thousands	Jul. 01, 2016	Jan. 01, 2016
Fair Value Measurements [Line Items]
Due within one year, Amortized Cost	$ 8,487
Due between one and two years, Amortized Cost	40,000
Total Amortized Cost	48,487
Due within one year, Estimated Fair Value	8,497
Due between one and two years, Estimated Fair Value	40,021
Total Estimated Fair Value	$ 48,518	$ 45,842

Net Income Per Share - Addition

Net Income Per Share - Additional Information (Detail) - Employee Stock Option - $ / shares	3 Months Ended	6 Months Ended
	Jul. 03, 2015	Jul. 03, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	40,000	30,989
Antidilutive Shares Weighted Average Exercise Price	$ 44.20	$ 44.20

Reconciliation of Shares Used t

Reconciliation of Shares Used to Calculate Basic and Diluted Net Income Per Share (Detail) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015
Schedule Of Earnings Per Share Basic and Diluted [Line Items]
Shares used in basic per share computation	26,631	26,714	26,572	26,668
Shares used in diluted per share computation	27,264	27,368	27,256	27,386
Employee Stock Option
Schedule Of Earnings Per Share Basic and Diluted [Line Items]
Effect of dilutive stock outstanding	127	144	124	143
Restricted Stock Units (RSUs)
Schedule Of Earnings Per Share Basic and Diluted [Line Items]
Effect of dilutive stock outstanding	506	510	560	575

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Options Expiration Term			10 years
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of annual bonus settled with fully vested restricted stock unit awards			40.00%
Unvested Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation, vesting period			4 years
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 52,000	$ 51,000	$ 429,000	$ 448,000
Vesting percentage of stock options granted per year			25.00%
Stock based compensation, vesting period			4 years
Vested Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	1,451,000	1,650,000	$ 3,168,000	3,343,000
Stock based compensation, holding period			4 years
Unvested Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 1,206,000	$ 980,000	$ 4,332,000	$ 4,111,000
Unvested Restricted Stock Awards | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recipient age to expense award on grant date			59 years 6 months
Unvested Stock Options | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recipient age to expense award on grant date			59 years 6 months

Treasury Stock - Additional Inf

Treasury Stock - Additional Information (Detail) - USD ($)	6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015	Oct. 21, 2015	May 29, 2014
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount			$ 35,000,000	$ 35,000,000
Purchase of treasury shares (in shares)	90,505	162,833
Repurchase of treasury shares	$ 4,458,000	$ 7,004,000
Remaining authorized amount for repurchase of common stock	42,306,000
Treasury stock reissued at lower than repurchase price	$ 5,791,000	$ 4,943,000

Deferred Compensation Plans - A

Deferred Compensation Plans - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015	Jan. 01, 2016
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Change in market value of trust assets	$ 938,000	$ (72,000)
Deferred Compensation, Excluding Share-based Payments and Retirement Benefits
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Trading securities	44,027,000		$ 44,027,000		$ 42,940,000
Deferred compensation plan vested amounts due	$ 49,377,000		49,377,000		$ 46,740,000
Change in market value of trust assets			$ 1,366,000	$ 1,309,000
Maximum
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Percentage of compensation deferred			100.00%

Supplemental Disclosure of Cash

Supplemental Disclosure of Cash Flow Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015
Cash paid during period:
Income taxes			$ 11,808	$ 10,235
Non-cash investing and financing activities:
Unrealized gain (loss) on short-term investments	$ (1)	$ (10)	84	(17)
Vested stock unit awards issued to settle accrued bonuses			6,334	6,169
Accrual for capital expenditures			$ 422	$ 226

Accounts Receivable, Net (Detai

Accounts Receivable, Net (Detail) - USD ($) $ in Thousands	Jul. 01, 2016	Jan. 01, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for contract losses and doubtful accounts	$ (3,619)	$ (2,792)
Total accounts receivable, net	92,309	88,577
Billed accounts receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	64,670	62,360
Unbilled accounts receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 31,258	$ 29,009

Segment Reporting - Additional

Segment Reporting - Additional Information (Detail)	6 Months Ended
	Jul. 01, 2016	Jan. 01, 2016	Jul. 03, 2015
Segment Reporting Information [Line Items]
Number of Operating Segments	2
Percentage of account receivable	10.00%		10.00%
Percentage of Company's revenue	10.00%	10.00%

Segment Information (Detail)

Segment Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015
Segment Reporting Information [Line Items]
Revenues	$ 77,295	$ 79,864	$ 160,451	$ 160,157
Operating Income	14,931	18,705	31,367	33,733
Capital Expenditures	1,901	1,087	3,382	1,714
Depreciation and Amortization	1,524	1,324	2,927	2,705
Operating segments
Segment Reporting Information [Line Items]
Operating Income	23,589	25,739	49,922	51,448
Capital Expenditures	1,311	866	2,524	1,282
Depreciation and Amortization	1,161	866	2,225	2,013
Engineering and Other Scientific
Segment Reporting Information [Line Items]
Revenues	60,979	59,359	125,789	119,160
Operating Income	19,561	19,108	40,699	38,353
Capital Expenditures	1,273	819	2,463	1,211
Depreciation and Amortization	1,116	822	2,137	1,926
Environmental and Health
Segment Reporting Information [Line Items]
Revenues	16,316	20,505	34,662	40,997
Operating Income	4,028	6,631	9,223	13,095
Capital Expenditures	38	47	61	71
Depreciation and Amortization	45	44	88	87
Corporate
Segment Reporting Information [Line Items]
Operating Income	(8,658)	(7,034)	(18,555)	(17,715)
Capital Expenditures	590	221	858	432
Depreciation and Amortization	$ 363	$ 458	$ 702	$ 692

Goodwill - Additional Informati

Goodwill - Additional Information (Detail)	6 Months Ended
	Jul. 01, 2016USD ($)
Goodwill [Line Items]
Goodwill, Acquisitions	$ 0
Goodwill, Dispositions	0
Goodwill, Impairments or other change	0
Goodwill, Changes in the composition	$ 0

Breakdown of Goodwill Reported

Breakdown of Goodwill Reported by Segment (Detail) - USD ($) $ in Thousands	Jul. 01, 2016	Jan. 01, 2016
Goodwill [Line Items]
Goodwill	$ 8,607	$ 8,607
Environmental and Health
Goodwill [Line Items]
Goodwill	8,099
Engineering and Other Scientific
Goodwill [Line Items]
Goodwill	$ 508