Intevac (IVAC) 10-Q 30 Apr 19 2019 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 30, 2019	Apr. 30, 2019
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Entity Registrant Name	INTEVAC INC
Entity Central Index Key	0001001902
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Trading Symbol	IVAC
Entity Common Stock, Shares Outstanding		22,960,131
Entity Emerging Growth Company	false
Entity Small Business	true

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 29, 2018
Current assets:
Cash and cash equivalents	$ 23,537	$ 18,715
Short-term investments	11,764	16,076
Trade and other accounts receivable, net of allowances of $0 at both March 30, 2019 and at December 29, 2018	19,996	27,717
Inventories	30,329	30,597
Prepaid expenses and other current assets	2,173	2,528
Total current assets	87,799	95,633
Long-term investments	5,394	4,372
Restricted cash	1,254	1,169
Property, plant and equipment, net	10,550	11,198
Operating lease right-of-use-assets	11,076
Intangible assets, net of accumulated amortization of $7,652 at March 30, 2019 and $7,498 at December 29, 2018	735	889
Deferred income taxes and other long-term assets	8,485	8,809
Total assets	125,293	122,070
Current liabilities:
Current operating lease liabilities	2,569
Accounts payable	4,867	6,053
Accrued payroll and related liabilities	3,457	4,689
Other accrued liabilities	4,327	4,952
Customer advances	10,335	14,314
Total current liabilities	25,555	30,008
Noncurrent liabilities:
Noncurrent operating lease liabilities	10,491
Other long-term liabilities	160	2,438
Total noncurrent liabilities	10,651	2,438
Stockholders' equity:
Common stock, $0.001 par value	23	23
Additional paid-in capital	184,953	183,204
Treasury stock, 4,965 shares at both March 30, 2019 and December 29, 2018	(29,047)	(29,047)
Accumulated other comprehensive income	484	378
Accumulated deficit	(67,326)	(64,934)
Total stockholders' equity	89,087	89,624
Total liabilities and stockholders' equity	$ 125,293	$ 122,070

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Mar. 30, 2019	Dec. 29, 2018
Net of allowances of trade, note and other accounts receivable	$ 0	$ 0
Net of amortization of intangible assets	$ 7,652	$ 7,498
Common stock, par value	$ 0.001	$ 0.001
Treasury stock, shares	4,965	4,965

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Net revenues:
Total net revenues	$ 24,827	$ 17,974
Cost of net revenues:
Total cost of net revenues	17,588	13,099
Gross profit	7,239	4,875
Operating expenses:
Research and development	3,986	4,167
Selling, general and administrative	5,252	5,829
Total operating expenses	9,238	9,996
Loss from operations	(1,999)	(5,121)
Interest income and other income (expense), net	160	145
Loss before income taxes	(1,839)	(4,976)
Provision for income taxes	553	160
Net loss	$ (2,392)	$ (5,136)
Net loss per share:
Basic and Diluted	$ (0.10)	$ (0.23)
Weighted average shares outstanding:
Basic and Diluted	22,855	22,107
Systems and components
Net revenues:
Total net revenues	$ 21,637	$ 15,472
Cost of net revenues:
Total cost of net revenues	15,100	10,728
Technology development
Net revenues:
Total net revenues	3,190	2,502
Cost of net revenues:
Total cost of net revenues	$ 2,488	$ 2,371

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Net loss	$ (2,392)	$ (5,136)
Other comprehensive income, before tax:
Change in unrealized net gain (loss) on available-for-sale investments	45	(28)
Foreign currency translation gains	61	104
Other comprehensive income, before tax	106	76
Income tax provision related to items in other comprehensive income	0	0
Other comprehensive income, net of tax	106	76
Comprehensive loss	$ (2,286)	$ (5,060)

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Operating activities
Net loss	$ (2,392)	$ (5,136)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	1,036	1,043
Net amortization (accretion) of investment premiums and discounts	(16)	(18)
Equity-based compensation	756	817
Straight-line rent adjustment and amortization of lease incentives	(85)	(19)
Deferred income taxes	332	0
Change in the fair value of acquisition-related contingent consideration	7	(1)
Loss on disposal of equipment	45	0
Changes in operating assets and liabilities	1,286	(733)
Total adjustments	3,361	1,089
Net cash provided by (used in) operating activities	969	(4,047)
Investing activities
Purchases of investments	(5,045)	(10,161)
Proceeds from sales and maturities of investments	8,396	9,328
Purchases of leasehold improvements and equipment	(371)	(592)
Net cash provided by (used in) investing activities	2,980	(1,425)
Financing activities
Proceeds from issuance of common stock	1,021	2,065
Taxes paid related to net share settlement	(28)	(333)
Payment of acquisition-related contingent consideration	(98)	0
Net cash provided by financing activities	895	1,732
Effect of exchange rate changes on cash and cash equivalents	63	105
Net increase (decrease) in cash, cash equivalents and restricted cash	4,907	(3,635)
Cash, cash equivalents and restricted cash at beginning of period	19,884	20,941
Cash, cash equivalents and restricted cash at end of period	$ 24,791	$ 17,306

Description of Business and Bas

Description of Business and Basis of Presentation	3 Months Ended
	Mar. 30, 2019
Accounting Policies [Abstract]
Business Description and Basis of Presentation [Text Block]	1. Description of Business and Basis of Presentation Intevac, Inc. (together with its subsidiaries “Intevac,” the “Company” or “we”) is a provider of vacuum deposition equipment for a wide variety of thin-film applications, and a leading provider of digital night-vision technologies and products to the defense industry. The Company leverages its core capabilities in high-volume manufacturing of small substrates to provide process manufacturing equipment solutions to the hard disk drive (“HDD”), display cover panel (“DCP”), and photovoltaic (“PV”) solar cell industries. Intevac also provides sensors, cameras and systems for government applications such as night vision. Intevac’s customers include manufacturers of hard disk media, DCPs and solar cells as well as the U.S. government and its agencies, allies and contractors. Intevac reports two segments: Thin-film Equipment (“TFE”) and Photonics. In the opinion of management, except for the changes below, the unaudited interim condensed consolidated financial statements of Intevac included herein have been prepared on a basis consistent with the December 29, 2018 audited consolidated financial statements and include all material adjustments, consisting of normal recurring adjustments, necessary to fairly present the information set forth therein. The Company adopted Accounting Standards Codification (“ASC”) 842, Leases, with a date of the initial application of December 30, 2018. As a result, the Company has changed its accounting policy for leases as detailed in Note 10. Leases. These unaudited interim condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in Intevac’s Annual Report on Form 10-K for the fiscal year ended December 29, 2018 (“2018 Form 10-K”). Intevac’s results of operations for the three months ended March 30, 2019 are not necessarily indicative of future operating results. The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make judgments, estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ materially from those estimates.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	3 Months Ended
	Mar. 30, 2019
Recent Accounting Pronouncements	2. Recent Accounting Pronouncement Adoption of New Accounting Standard We adopted ASU No. 2016-02, Leases (Topic 842), as of December 30, 2018, using the modified retrospective approach. The modified retrospective approach provides a method for recording existing leases at the beginning of the period of adoption. In addition, we elected the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allowed us to carry forward the historical lease classification and we elected the hindsight practical expedient to determine the lease term for existing leases. We determined that most renewal options would not be reasonably certain in determining the expected lease term. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods. Adoption of the new standard resulted in the recording of net lease assets of $11.6 million and lease liabilities of $13.7 million, as of December 30, 2018. The standard did not have an impact on our consolidated results of operations or cash flows. The effect of the changes made to our consolidated December 30, 2018 balance sheet for the adoption of the new lease standard was as follows (in thousands): Balance at December 29, Adjustments Due to ASC 842 Balance at December 30, Prepaid expenses and other current assets $ 2,528 $ (221 )1 $ 2,307 Total current assets $ 95,633 $ (221 )1 $ 95,412 Operating lease right-of-use assets $ — $ 11,635 1,2,3 $ 11,635 Total assets $ 122,070 $ 11,414 1,2,3 $ 133,484 Current operating lease liabilities $ — $ 2,581 5 $ 2,581 Accounts payable $ 6,053 $ (4 )4 $ 6,049 Other accrued liabilities $ 4,952 $ (13 )3 $ 4,939 Total current liabilities $ 30,008 $ 2,564 3,4,5 $ 32,572 Noncurrent operating lease liabilities $ — $ 11,120 5 $ 11,120 Other long-term liabilities $ 2,438 $ (2,270 )3 $ 168 Total non-current liabilities $ 2,438 $ 8,850 3,4,5 $ 11,288 Total liabilities and stockholders’ equity $ 122,070 $ 11,414 ,4,5 $ 133,484 1 Represents prepaid rent reclassified to operating lease right-of-use assets. 2 Represents capitalization of operating lease right-of-use assets and reclassification of straight-line rent accrual, and tenant incentives. 3 Represents reclassification of straight-line rent accrual to operating lease right-of-use assets. 4 Represents accrued rent reclassified to operating lease right-of-use assets. 5 Represents recognition of operating lease liabilities.

Revenue

Revenue	3 Months Ended
	Mar. 30, 2019
Revenue	3. Revenue The following tables represent a disaggregation of revenue from contracts with customers for the three months ended March 30, 2019 and March 31, 2018 along with the reportable segment for each category. Major Products and Service Lines TFE Three Months Ended March 30, 2019 Three Months Ended March 31, 2018 (In thousands) HDD DCP PV Total HDD DCP PV Total Systems, upgrades and spare parts $ 11,050 $ — $ 6,373 $ 17,423 $ 10,393 $ 1 $ 2 $ 10,396 Field service 1,522 — — 1,522 2,355 — 38 2,393 Total TFE net revenues $ 12,572 $ — $ 6,373 $ 18,945 $ 12,748 $ 1 $ 40 $ 12,789 Three Months Ended Photonics March 30, 2019 March 31, 2018 (In thousands) Products: Military products $ 1,813 $ 2,254 Commercial products 318 — Repair and other services 561 429 Total Photonics product net revenues 2,692 2,683 Technology development: Firm Fixed Price (“FFP”) 1,692 692 Cost Plus Fixed Fee (“CPFF”) 1,496 1,790 Time and materials 2 20 Total technology development net revenues 3,190 2,502 Total Photonics net revenues $ 5,882 $ 5,185 Primary Geographical Markets Three Months Ended March 30, 2019 March 31, 2018 (In thousands) TFE Photonics Total TFE Photonics Total United States $ 161 $ 5,716 $ 5,877 $ 1,911 $ 4,762 $ 6,673 Asia 18,784 — 18,784 10,878 — 10,878 Europe — 166 166 — 293 293 Rest of World — — — — 130 130 Total net revenues $ 18,945 $ 5,882 $ 24,827 $ 12,789 $ 5,185 $ 17,974 Timing of Revenue Recognition Three Months Ended March 30, 2019 March 31, 2018 (In thousands) TFE Photonics Total TFE Photonics Total Products transferred at a point in time $ 18,945 $ 561 $ 19,506 $ 12,789 $ 429 $ 13,218 Products and services transferred over time — 5,321 5,321 — 4,756 4,756 $ 18,945 $ 5,882 $ 24,827 $ 12,789 $ 5,185 $ 17,974 The following table reflects the changes in our contract assets, which we classify as accounts receivable, unbilled or retainage, and our contract liabilities, which we classify as deferred revenue and customer advances, for the three months ended March 30 2019. March 30, 2019 December 29, 2018 Three Months Change (In thousands) TFE: Contract assets: Accounts receivable, unbilled $ 897 $ 514 $ 383 Contract liabilities: Deferred revenue $ 713 $ 633 $ 80 Customer advances 10,335 14,314 (3,979 ) $ 11,048 $ 14,947 $ (3,899 ) Photonics: Contract assets: Accounts receivable, unbilled $ 2,561 $ 1,493 $ 1,068 Retainage 131 157 (26 ) $ 2,692 $ 1,650 $ 1,042 Contract liabilities: Deferred revenue $ 784 $ 1,101 $ (317 ) Accounts receivable, unbilled in our TFE segment represents a contract asset for revenue that has been recognized in advance of billing the customer. For our system and certain upgrade sales, our TFE customers generally pay in three installments, with a portion of the system price billed upon receipt of an order, a portion of the price billed upon shipment, and the balance of the price due upon completion of installation and acceptance of the system at the customer’s factory. Accounts receivable, unbilled in our TFE segment generally represents the balance of the system price that is due upon completion of installation and acceptance less, the amount that has been deferred as revenue for the performance of the installation tasks. During the three months ended March 30, 2019, contract assets in our TFE segment increased by $383,000 primarily due to the accrual of revenue for four systems delivered in the quarter that were pending acceptance as of March 30, 2019. Customer advances in our TFE segment generally represent a contract liability for amounts billed to the customer prior to transferring goods. The Company has elected to use the practical expedient to disregard the effect of the time value of money in a significant financing component when its payment terms are less than one year. These contract advances are liquidated when revenue is recognized. Deferred revenue in our TFE segment generally represents a contract liability for amounts billed to a customer for completed systems at the customer site that are undergoing installation and acceptance testing where transfer of control has not yet occurred as Intevac does not yet have a demonstrated history of meeting the acceptance criteria upon the customer’s receipt of product. During the three months ended March 30, 2019, we recognized revenue in our TFE segment of $6.5 million and $209,000 that was included in customer advances and deferred revenue, respectively, at the beginning of the period. Accounts receivable, unbilled in our Photonics segment represents a contract asset for revenue that has been recognized in advance of billing the customer, which is common for contracts in the defense industry. In our Photonics segment, amounts are billed as work progresses in accordance with agreed-upon contractual terms, either at periodic intervals (e.g., monthly) or upon achievement of contractual milestones. Generally, billing occurs subsequent to revenue recognition, resulting in contract assets. Our contracts with the U.S. government may also contain retainage provisions. Retainage represents a contract asset for the portion of the contract price earned by us for work performed, but held for payment by the U.S. government as a form of security until satisfactory completion of the contract. The retainage is billable upon completion of the contract performance and approval of final indirect expense rates by the government. During the three months ended March 30, 2019, contract assets in our Photonics segment increased by $1.0 million primarily due to the accrual of revenue for incurred costs under FFP and CPFF contracts. Deferred revenue in our Photonics segment includes $784,000 deferred for the impact of the allocation and the timing of the recognition of revenue for a military product agreement with a tiered pricing structure. During the three months ended March 30, 2019, we recognized revenue in our Photonics segment of $317,000 that was included in deferred revenue at the beginning of the period. On March 30, 2019 we had $102.6 million of remaining performance obligations, which we also refer to as total backlog. Backlog at March 30, 2019 consisted of $59.3 million of TFE backlog and $43.3 million of Photonics backlog. We expect to recognize approximately 69% of our remaining performance obligations as revenue in 2019, and the balance in 2020.

Inventories

Inventories	3 Months Ended
	Mar. 30, 2019
Inventory Disclosure [Abstract]
Inventories	4. Inventories Inventories are stated at the lower of average cost or net realizable value and consist of the following: March 30, 2019 December 29, 2018 (In thousands) Raw materials $ 16,815 $ 16,354 Work-in-progress 11,933 9,134 Finished goods 1,581 5,109 $ 30,329 $ 30,597 Finished goods inventory at December 29, 2018 included three completed systems at Intevac’s factory and shipped to the customer in January 2019.

Equity-Based Compensation

Equity-Based Compensation	3 Months Ended
	Mar. 30, 2019
Equity-Based Compensation	5. Equity-Based Compensation At March 30, 2019, Intevac had equity-based awards outstanding under the 2012 Equity Incentive Plan and the 2004 Equity Incentive Plan (together, the “Plans”) and the 2003 Employee Stock Purchase Plan (the “ESPP”). Intevac’s stockholders approved all of these plans. The Plans permit the grant of incentive or non-statutory stock options, restricted stock, stock appreciation rights, restricted stock units (“RSUs”) and performance shares. The ESPP provides that eligible employees may purchase Intevac’s common stock through payroll deductions at a price equal to 85% of the lower of the fair market value at the entry date of the applicable offering period or at the end of each applicable purchase interval. Offering periods are generally two years in length, and consist of a series of six-month purchase intervals. Eligible employees may join the ESPP at the beginning of any six-month purchase interval. Under the terms of the ESPP, employees can choose to have up to 15% of their base earnings withheld to purchase Intevac common stock. Compensation Expense The effect of recording equity-based compensation for the three-month periods ended March 30, 2019 and March 31, 2018 was as follows: Three Months Ended March 30, 2019 March 31, 2018 (In thousands) Equity-based compensation by type of award: Stock options $ 206 $ 134 RSUs 291 406 Employee stock purchase plan 259 277 Total equity-based compensation $ 756 $ 817 Stock Options and ESPP The fair value of stock options and ESPP awards is estimated at the grant date using the Black-Scholes option valuation model. The determination of fair value of stock options and ESPP awards on the date of grant using an option-pricing model is affected by Intevac’s stock price as well as assumptions regarding a number of highly complex and subjective variables. These variables include, but are not limited to, our expected stock price volatility over the term of the awards, and actual employee stock option exercise behavior. Option activity as of March 30, 2019 and changes during the three months ended March 30, 2019 were as follows: Shares Weighted Average Exercise Price Options outstanding at December 29, 2018 2,070,749 $ 6.76 Options granted 13,125 $ 6.08 Options cancelled and forfeited (8,992 ) $ 7.43 Options exercised (72,122 ) $ 4.22 Options outstanding at March 30, 2019 2,002,760 $ 6.84 Options exercisable at March 30, 2019 1,300,175 $ 6.72 Intevac issued 181,431 shares under the ESPP during the three months ended March 30, 2019. Intevac estimated the weighted-average fair value of stock options and ESPP purchase rights using the following weighted-average assumptions: Three Months Ended March 30, 2019 March 31, 2018 Stock Options: Weighted-average fair value of grants per share $ 2.28 $ 2.30 Expected volatility 43.40 % 41.97 % Risk free interest rate 2.21 % 2.48 % Expected term of options (in years) 4.32 4.23 Dividend yield None None ESPP Purchase Rights: Weighted-average fair value of grants per share $ 1.89 $ 2.36 Expected volatility 50.00 % 46.60 % Risk free interest rate 2.53 % 1.82 % Expected term of purchase rights (in years) 1.0 1.25 Dividend yield None None The computation of the expected volatility assumptions used in the Black-Scholes calculations for new stock option grants and ESPP purchase rights is based on the historical volatility of Intevac’s stock price, measured over a period equal to the expected term of the stock option grant or purchase right. The risk-free interest rate is based on the yield available on U.S. Treasury Strips with an equivalent remaining term. The expected term of employee stock options represents the weighted-average period that the stock options are expected to remain outstanding and was determined based on historical experience of similar awards, giving consideration to the contractual terms of the equity-based awards and vesting schedules. The expected term of purchase rights represents the period of time remaining in the current offering period. The dividend yield assumption is based on Intevac’s history of not paying dividends and the assumption of not paying dividends in the future. Intevac accounts for forfeitures as they occur, rather than by estimating expected forfeitures. RSUs A summary of the RSU activity is as follows: Shares Weighted-Average Grant Date Fair Value Non-vested RSUs at December 29, 2018 462,409 $ 6.92 Granted 8,563 $ 6.11 Vested (11,924 ) $ 6.92 Cancelled and forfeited (8,737 ) $ 6.38 Non-vested RSUs at March 30, 2019 450,311 $ 6.91 Time-based RSUs are converted into shares of Intevac common stock upon vesting on a one-for-one basis. Time-based RSUs typically are scheduled to vest over four years. Vesting of time-based RSUs is subject to the grantee’s continued service with Intevac. The compensation expense related to these awards is determined using the fair market value of Intevac common stock on the date of the grant, and the compensation expense is recognized over the vesting period.

Purchased Intangible Assets, Ne

Purchased Intangible Assets, Net	3 Months Ended
	Mar. 30, 2019
Purchased Intangible Assets, Net	6. Purchased Intangible Assets Details of finite-lived intangible assets by segment as of March 30, 2019, are as follows: March 30, 2019 Gross Carrying Amount Accumulated Amortization Net Carrying Amount (In thousands) TFE $ 7,172 $ (6,505 ) $ 667 Photonics 1,215 (1,147 ) 68 $ 8,387 $ (7,652 ) $ 735 Total amortization expense of finite-lived intangibles for the three months ended March 30, 2019 was $154,000. As of March 30, 2019, future amortization expense is expected to be as follows: (In thousands) 2019 $ 461 2020 274 $ 735

Acquisition-Related Contingent

Acquisition-Related Contingent Consideration	3 Months Ended
	Mar. 30, 2019
Acquisition-Related Contingent Consideration	7. Acquisition-Related Contingent Consideration In connection with the acquisition of Solar Implant Technologies, Inc. (“SIT”), Intevac also agreed to pay to the selling shareholders in cash a revenue earnout on Intevac’s net revenue from commercial sales of certain products over a specified period up to an aggregate of $9.0 million. Intevac estimated the fair value of this contingent consideration on March 30, 2019 based on forecasted revenues reflecting Intevac’s own assumptions concerning future revenue from such products. The earnout period terminates on June 30, 2019. The fair value measurement of contingent consideration is based on significant inputs not observable in the market and thus represents a Level 3 measurement. Significant increases or decreases in these inputs would result in a significantly lower (higher) fair value measurement. Any change in fair value of the contingent consideration subsequent to the acquisition date is recognized in operating income within the consolidated statement of income. The following table represents a reconciliation of the change in the fair value measurement of the contingent consideration liability for the three-month periods ended March 30, 2019 and March 31, 2018. Three Months Ended March 30, 2019 March 31, 2018 (In thousands) Opening balance $ 223 $ 362 Changes in fair value 7 (1 ) Cash payments made (98 ) — Closing balance $ 132 $ 361 The contingent consideration liability of $132,000 at March 30, 2019 and $223,000 at December 29, 2018 is included in other accrued liabilities on the condensed consolidated balance sheets.

Warranty

Warranty	3 Months Ended
	Mar. 30, 2019
Guarantees [Abstract]
Product Warranty Disclosure [Text Block]	8. Warranty Intevac provides for the estimated cost of warranty when revenue is recognized. Intevac’s warranty is per contract terms and, for its HDD manufacturing, DCP manufacturing and solar cell manufacturing systems, the warranty typically ranges between 12 and 24 months from customer acceptance. During this warranty period any defective non-consumable parts are replaced and installed at no charge to the customer. Intevac uses estimated repair or replacement costs along with its historical warranty experience to determine its warranty obligation. The provision for the estimated future costs of warranty is based upon historical cost and product performance experience. Intevac exercises judgment in determining the underlying estimates. On the condensed consolidated balance sheets, the short-term portion of the warranty provision is included in other accrued liabilities, while the long-term portion is included in other long-term liabilities. The expense associated with product warranties issued or adjusted is included in cost of net revenues on the condensed consolidated statements of operations. The following table displays the activity in the warranty provision account for the three-month periods ended March 30, 2019 and March 31, 2018. Three Months Ended March 30, 2019 March 31, 2018 (In thousands) Opening balance $ 997 $ 994 Expenditures incurred under warranties (167 ) (236 ) Accruals for product warranties issued during the reporting period 324 104 Adjustments to previously existing warranty accruals 143 4 Closing balance $ 1,297 $ 866 The following table displays the balance sheet classification of the warranty provision account at March 30, 2019 and at December 29, 2018. March 30, 2019 December 29, 2018 (In thousands) Other accrued liabilities $ 1,147 $ 839 Other long-term liabilities 150 158 Total warranty provision $ 1,297 $ 997

Guarantees

Guarantees	3 Months Ended
	Mar. 30, 2019
Guarantees [Abstract]
Guarantees [Text Block]	9. Guarantees Officer and Director Indemnifications As permitted or required under Delaware law and to the maximum extent allowable under that law, Intevac has certain obligations to indemnify its current and former officers and directors for certain events or occurrences while the officer or director is, or was, serving at Intevac’s request in such capacity. These indemnification obligations are valid as long as the director or officer acted in good faith and in a manner the person reasonably believed to be in or not opposed to the best interests of the Company and, with respect to any criminal action or proceeding, had no reasonable cause to believe his or her conduct was unlawful. The maximum potential amount of future payments Intevac could be required to make under these indemnification obligations is unlimited; however, Intevac has a director and officer insurance policy that mitigates Intevac’s exposure and enables Intevac to recover a portion of any future amounts paid. As a result of Intevac’s insurance policy coverage, Intevac believes the estimated fair value of these indemnification obligations is not material. Other Indemnifications As is customary in Intevac’s industry, many of Intevac’s contracts provide remedies to certain third parties such as defense, settlement, or payment of judgments for intellectual property claims related to the use of its products. Such indemnification obligations may not be subject to maximum loss clauses. Historically, payments made related to these indemnifications have been immaterial. Letters of Credit As of March 30, 2019, we had letters of credit and bank guarantees outstanding totaling $1.3 million, including the standby letter of credit outstanding under the Santa Clara, California facility lease and various other guarantees with our bank. These letters of credit and bank guarantees are collateralized by $1.3 million of restricted cash.

Leases

Leases	3 Months Ended
	Mar. 30, 2019
Disclosure Text Block [Abstract]
Lessee, Operating Leases [Text Block]	10. Leases Intevac leases certain manufacturing facilities, warehouses, office space, and equipment under non-cancelable operating leases that expire at various times up to March 2024 and has options to renew most leases, with rentals to be negotiated. Certain of Intevac’s leases contain provisions for rental adjustments. Operating lease rentals are expensed on a straight-line basis over the life of the lease beginning on the date we take possession of the property. At lease inception, we determine the lease term by assuming the exercise of those renewal options that are reasonably assured. The exercise of lease renewal options is at our sole discretion. The lease term is used to determine whether a lease is financing or operating and is used to calculate straight-line rent expense. Additionally, the depreciable life of leasehold improvements is limited by the expected lease term. Leases with an initial term of 12 months or less are not recorded on the balance sheet; we recognize lease expense for these leases on a straight-line basis over the lease term. The following table reflects our lease assets and our lease liabilities at March 30, 2019 and December 30, 2018. March 30, 2019 December 30, 2018 (In thousands) Assets: Operating lease right-of-use assets $ 11,076 $ 11,635 Liabilities: Current operating lease liabilities $ 2,569 $ 2,581 Noncurrent operating lease liabilities 10,491 11,120 $ 13,060 $ 13,701 Lease Costs: The components of lease costs were as follows: Three Months Ended March 30, 2019 March 31, 2018 (In thousands) Operating lease cost $ 782 $ 759 Short-term lease cost 19 21 Total lease cost $ 801 $ 780 As of March 30, 2019, the maturity of operating lease liabilities was as follows: (In thousands) 2019 $ 2,543 2020 2,992 2021 2,989 2022 3,074 2023 3,161 2024 529 Total lease payments 15,288 Less: Interest (2,228 ) Present value of lease liabilities $ 13,060 Lease Term and Discount Rate: March 30, 2019 Weighted-average remaining lease term (in years) 4.8 Weighted-average discount rate 6.48 % Other information: Supplemental cash flow information related to leases was as follows: Three Months Ended March 30, 2019 Operating cash outflows from operating leases $ 886 Right-of-use assets obtained in exchange for new operating lease liabilities $ —

Cash, Cash Equivalents and Inve

Cash, Cash Equivalents and Investments	3 Months Ended
	Mar. 30, 2019
Cash, Cash Equivalents and Investments	11. Cash, Cash Equivalents and Investments Cash and cash equivalents, short-term investments and long-term investments consist of: March 30, 2019 Amortized Cost Unrealized Holding Gains Unrealized Holding Losses Fair Value (In thousands) Cash and cash equivalents: Cash $ 14,671 $ — $ — $ 14,671 Money market funds 5,064 — — 5,064 Commercial paper 1,497 — — 1,497 Municipal bonds 500 — — 500 U.S. treasury and agency securities 1,804 1 — 1,805 Total cash and cash equivalents $ 23,536 $ 1 $ — $ 23,537 Short-term investments: Certificates of deposit $ 3,000 $ 4 $ — $ 3,004 Commercial paper 1,899 — — 1,899 Corporate bonds and medium-term notes 2,807 2 3 2,806 Municipal bonds 500 — — 500 U.S. treasury and agency securities 3,560 — 5 3,555 Total short-term investments $ 11,766 $ 6 $ 8 $ 11,764 Long-term investments: Certificates of deposit $ 500 $ — $ — $ 500 Corporate bonds and medium-term notes 4,875 20 1 4,894 Total long-term investments $ 5,375 $ 20 $ 1 $ 5,394 Total cash, cash equivalents, and investments $ 40,677 $ 27 $ 9 $ 40,695 December 29, 2018 Amortized Cost Unrealized Holding Gains Unrealized Holding Losses Fair Value (In thousands) Cash and cash equivalents: Cash $ 13,334 $ — $ — $ 13,334 Money market funds 3,335 — — 3,335 U.S. treasury and agency securities 2,046 — — 2,046 Total cash and cash equivalents $ 18,715 $ — $ — $ 18,715 Short-term investments: Certificates of deposit $ 5,299 $ 1 $ 1 $ 5,299 Commercial paper 2,242 — 1 2,241 Corporate bonds and medium-term notes 4,759 — 13 4,746 Municipal bonds 500 — 2 498 U.S. treasury and agency securities 3,297 — 5 3,292 Total short-term investments $ 16,097 $ 1 $ 22 $ 16,076 Long-term investments: Certificates of deposit $ 500 $ — $ — $ 500 Corporate bonds and medium-term notes 2,879 4 4 2,879 U.S. treasury and agency securities 999 — 6 993 Total long-term investments $ 4,378 $ 4 $ 10 $ 4,372 Total cash, cash equivalents, and investments $ 39,190 $ 5 $ 32 $ 39,163 The contractual maturities of available-for-sale securities at March 30, 2019 are presented in the following table. Amortized Cost Fair Value (In thousands) Due in one year or less $ 20,631 $ 20,630 Due after one through five years 5,375 5,394 $ 26,006 $ 26,024 The following table provides the fair market value of Intevac’s investments with unrealized losses that are not deemed to be other-than temporarily impaired as of March 30, 2019. March 30, 2019 In Loss Position for Less than 12 Months In Loss Position for Greater than 12 Months Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses (In thousands) Corporate bonds and medium-term notes $ — $ — $ 1,097 $ 4 U.S. treasury and agency securities — — 1,994 5 $ — $ — $ 3,091 $ 9 All prices for the fixed maturity securities including U.S. treasury and agency securities, certificates of deposit, commercial paper, corporate bonds, asset backed securities and municipal bonds are received from independent pricing services utilized by Intevac’s outside investment manager. This investment manager performs a review of the pricing methodologies and inputs utilized by the independent pricing services for each asset type priced by the vendor. In addition, on at least an annual basis, the investment manager conducts due diligence visits and interviews with each pricing vendor to verify the inputs utilized for each asset class. The due diligence visits include a review of the procedures performed by each vendor to ensure that pricing evaluations are representative of the price that would be received to sell a security in an orderly transaction. Any pricing where the input is based solely on a broker price is deemed to be a Level 3 price. Intevac uses the pricing data obtained from its outside investment manager as the primary input to make its assessments and determinations as to the ultimate valuation of the above-mentioned securities and has not made, during the periods presented, any material adjustments to such inputs. The following table represents the fair value hierarchy of Intevac’s available-for-sale securities measured at fair value on a recurring basis as of March 30, 2019. Fair Value Measurements at March 30, 2019 Total Level 1 Level 2 (In thousands) Recurring fair value measurements: Available-for-sale securities Money market funds $ 5,064 $ 5,064 $ — U.S. treasury and agency securities 5,360 5,360 — Certificates of deposit 3,504 — 3,504 Commercial paper 3,396 — 3,396 Corporate bonds and medium-term notes 7,700 — 7,700 Municipal bonds 1,000 — 1,000 Total recurring fair value measurements $ 26,024 $ 10,424 $ 15,600

Derivative Instruments

Derivative Instruments	3 Months Ended
	Mar. 30, 2019
Derivative Instruments	12. Derivative Instruments The Company uses foreign currency forward contracts to mitigate variability in gains and losses generated from the re-measurement of certain monetary assets and liabilities denominated in foreign currencies and to offset certain operational exposures from the impact of changes in foreign currency exchange rates. These derivatives are carried at fair value with changes recorded in interest income and other, net in the condensed consolidated statements of operations. Changes in the fair value of these derivatives are largely offset by re-measurement of the underlying assets and liabilities. Cash flows from such derivatives are classified as operating activities. The derivatives have maturities of approximately 30 days. The following table summarizes the Company’s outstanding derivative instruments on a gross basis as recorded in its condensed consolidated balance sheets as of March 30, 2019 and December 29, 2018. Notional Amounts Derivative Liabilities Derivative Instrument March 30, December 29, March 30, 2019 December 29, Balance Sheet Line Fair Value Balance Sheet Line Fair Value (In thousands) Undesignated Hedges: Forward Foreign Currency Contracts $ 1,558 1,764 * $ 8 * $ 8 Total Hedges $ 1,558 1,764 $ 8 8 * Other accrued liabilities

Equity

Equity	3 Months Ended
	Mar. 30, 2019
Equity	13. Equity Condensed Consolidated Statements of Changes in Equity The changes in stockholders’ equity by component for the three months ended March 30, 2019 and March 31, 2018, are as follows (in thousands): Three Months Ended March 30, 2019 Common Stock and Accumulated Additional Other Total Paid-in Treasury Comprehensive Accumulated Stockholders’ Capital Stock Income Deficit Equity Balance at December 29, 2018 $ 183,227 $ (29,047 ) $ 378 $ (64,934 ) $ 89,624 Common stock issued under employee plans 993 — — — 993 Equity-based compensation expense 756 — — — 756 Net loss — — — (2,392 ) (2,392 ) Other comprehensive income — — 106 — 106 Balance at March 30, 2019 $ 184,976 $ (29,047 ) $ 484 $ (67,326 ) $ 89,087 Three Months Ended March 31, 2018 Common Stock and Accumulated Additional Other Total Paid-in Treasury Comprehensive Accumulated Stockholders’ Capital Stock Income Deficit Equity Balance at December 30, 2017 $ 177,543 $ (28,489 ) $ 490 $ (66,881 ) $ 82,663 Cumulative effect of accounting change — — — (1,634 ) (1,634 ) Common stock issued under employee plans 1,732 — — — 1,732 Equity-based compensation expense 817 — — — 817 Net loss — — — (5,136 ) (5,136 ) Other comprehensive income — — 76 — 76 Balance at March 30, 2018 $ 180,092 $ (28,489 ) $ 566 $ (73,651 ) $ 78,518 Accumulated Other Comprehensive Income The changes in accumulated other comprehensive income by component for the three months ended March 30, 2019 and March 31, 2018, are as follows: Three Months Ended March 30, 2019 March 31, 2018 Foreign currency Unrealized holding gains (losses) on available- for-sale investments Total Foreign currency Unrealized holding gains (losses) on available- for-sale investments Total (In thousands) Beginning balance $ 405 $ (27 ) $ 378 $ 535 $ (45 ) $ 490 Other comprehensive income before reclassification 61 45 106 104 (28 ) 76 Amounts reclassified from other comprehensive income — — — — — — Net current-period other comprehensive income 61 45 106 104 (28 ) 76 Ending balance $ 466 $ 18 $ 484 $ 639 $ (73 ) $ 566 Stock Repurchase Program On November 21, 2013, Intevac’s Board of Directors approved a stock repurchase program authorizing up to $30.0 million in repurchases. On August 15, 2018, Intevac’s Board of Directors approved a $10.0 million increase to the original stock repurchase program for an aggregate authorized amount of up to $40.0 million. At March 30, 2019, $10.9 million remains available for future stock repurchases under the repurchase program. Intevac did not make any stock repurchases during the three months ended March 30, 2019 and March 30, 2018, respectively. Intevac records treasury stock purchases under the cost method using the first-in, first-out (FIFO) method. Upon reissuance of treasury stock, amounts in excess of the acquisition cost are credited to additional paid-in capital. If Intevac reissues treasury stock at an amount below its acquisition cost and additional paid-in capital associated with prior treasury stock transactions is insufficient to cover the difference between the acquisition cost and the reissue price, this difference is recorded against retained earnings.

Net Loss Per Share

Net Loss Per Share	3 Months Ended
	Mar. 30, 2019
Net Loss Per Share	14. Net Loss Per Share The following table sets forth the computation of basic and diluted net loss per share. Three Months Ended March 30, 2019 March 31, 2018 (In thousands) Net loss $ (2,392 ) $ (5,136 ) Weighted-average shares — basic 22,855 22,107 Effect of dilutive potential common shares — — Weighted-average shares — diluted 22,855 22,107 Net loss per share — basic and diluted $ (0.10 ) $ (0.23 ) As the Company is in a net loss position, all of the Company’s equity instruments are considered antidilutive.

Segment Reporting

Segment Reporting	3 Months Ended
	Mar. 30, 2019
Segment Reporting	15. Segment Reporting Intevac’s two reportable segments are: TFE and Photonics. Intevac’s chief operating decision-maker has been identified as the President and CEO, who reviews operating results to make decisions about allocating resources and assessing performance for the entire Company. Segment information is presented based upon Intevac’s management organization structure as of March 30, 2019 and the distinctive nature of each segment. Future changes to this internal financial structure may result in changes to the reportable segments disclosed. Each reportable segment is separately managed and has separate financial results that are reviewed by Intevac’s chief operating decision-maker. Each reportable segment contains closely related products that are unique to the particular segment. Segment operating profit is determined based upon internal performance measures used by the chief operating decision-maker. Intevac derives the segment results from its internal management reporting system. The accounting policies Intevac uses to derive reportable segment results are substantially the same as those used for external reporting purposes. Management measures the performance of each reportable segment based upon several metrics, including orders, net revenues and operating income. Management uses these results to evaluate the performance of, and to assign resources to, each of the reportable segments. Intevac manages certain operating expenses separately at the corporate level. Intevac allocates certain of these corporate expenses to the segments in an amount equal to 3% of net revenues. Segment operating income excludes interest income/expense and other financial charges and income taxes according to how a particular reportable segment’s management is measured. Management does not consider impairment charges, gains and losses on divestitures and sales of intellectual property, and unallocated costs in measuring the performance of the reportable segments. The TFE segment designs, develops and markets vacuum process equipment solutions for high-volume manufacturing of small substrates with precise thin-film properties, such as for the hard drive, solar cell and DCP industries, as well as other adjacent thin-film markets. The Photonics segment develops compact, cost-effective, high-sensitivity digital-optical products for the capture and display of low-light images. Intevac provides sensors, cameras and systems for government applications such as night vision. Information for each reportable segment for the three months ended March 30, 2019 and March 31, 2018 is as follows: Net Revenues Three Months Ended March 30, 2019 March 31, 2018 (In thousands) TFE $ 18,945 $ 12,789 Photonics 5,882 5,185 Total segment net revenues $ 24,827 $ 17,974 Operating Loss Three Months Ended March 30, 2019 March 31, 2018 (In thousands) TFE $ (603 ) $ (2,509 ) Photonics (640 ) (1,210 ) Total segment operating loss (1,243 ) (3,719 ) Unallocated costs (756 ) (1,402 ) Loss from operations (1,999 ) (5,121 ) Interest income and other income (expense), net 160 145 Loss before income taxes $ (1,839 ) $ (4,976 ) Total assets for each reportable segment as of March 30, 2019 and December 29, 2018 are as follows: Assets March 30, 2019 December 29, 2018 (In thousands) TFE $ 52,417 $ 53,867 Photonics 18,115 16,721 Total segment assets 70,532 70,588 Cash, cash equivalents and investments 40,695 39,163 Restricted cash 1,254 1,169 Deferred income taxes 7,581 7,913 Other current assets 1,124 1,341 Common property, plant and equipment 1,026 1,017 Common operating lease right-of-use assets 2,194 — Other assets 887 879 Consolidated total assets $ 125,293 $ 122,070

Income Taxes

Income Taxes	3 Months Ended
	Mar. 30, 2019
Income Taxes	16. Income Taxes Intevac recorded income tax provisions of $553,000 for the three months ended March 30, 2019 and $160,000 for the three months ended March 31, 2018. The income tax provisions for the three month periods are based upon estimates of annual income (loss), annual permanent differences and statutory tax rates in the various jurisdictions in which Intevac operates. For the three-month period ended March 30, 2019 Intevac recorded a $362,000 income tax provision on earnings of its international subsidiaries and recorded $191,000 for withholding taxes on royalties paid to the United States from Intevac’s Singapore subsidiary as a discrete item. For the three-month period ended March 31, 2018 Intevac recorded $145,000 for withholding taxes as a discrete item. For all periods presented Intevac utilized net operating loss carry-forwards to offset the impact of the global intangible low-taxed income (“GILTI”). Intevac’s tax rate differs from the applicable statutory rates due primarily to establishment of a valuation allowance, the utilization of deferred and current credits and the effect of permanent differences and adjustments of prior permanent differences. Intevac’s future effective income tax rate depends on various factors, including the level of Intevac’s projected earnings, the geographic composition of worldwide earnings, tax regulations governing each region, net operating loss carry-forwards, availability of tax credits and the effectiveness of Intevac’s tax planning strategies. Management carefully monitors these factors and timely adjusts the effective income tax rate. The Inland Revenue Authority of Singapore (“IRAS”) is currently conducting a review of various fiscal year tax returns of the Company’s wholly-owned subsidiary, Intevac Asia Pte. Ltd. in 2009 and 2010. IRAS has challenged the Company’s tax position with respect to certain aspects of the Company’s transfer pricing. Under Singapore tax law, the Company must pay all contested taxes and the related interest to have the right to defend its position. The contested tax deposits of $730,000 at March 30, 2019 and $723,000 at December 29, 2018 are included in other long-term assets on the condensed consolidated balance sheets. The Company’s management and its advisors continue to believe that the Company is “more likely than not” to successfully defend that the tax treatment was proper and in accordance with Singapore tax regulations. Presently, there are no other active income tax examinations in the jurisdictions where Intevac operates.

Restructuring Charges

Restructuring Charges	3 Months Ended
	Mar. 30, 2019
Restructuring Charges	17. Restructuring Charges During the first quarter of fiscal 2018, Intevac substantially completed implementation of the 2018 cost reduction plan (the “Reduction Plan”), which was intended to reduce expenses and reduce its workforce by 6 percent. The cost of implementing the Reduction Plan was reported under cost of net revenues and operating expenses in the condensed consolidated statements of operations. Substantially all cash outlays in connection with the Reduction Plan occurred in the first quarter of fiscal 2018. Implementation of the Reduction Plan reduced salary, wages and other employee-related expenses by approximately $1.8 million on an annual basis. The changes in restructuring reserves associated with the Reduction Plan for the three months ended March 31, 2018 are as follows: Three Months Ended March 31, 2018 Severance and other employee- related costs (In thousands) Beginning balance $ — Provision for restructuring reserves 95 Cash payments made (95 ) Ending balance $ —

Related Party Transaction

Related Party Transaction	3 Months Ended
	Mar. 30, 2019
Related Party Transaction	18. Related Party Transaction A Board member of the Company also serves as the Chief Executive Officer of a supplier. The Company made inventory purchases in the amount of $152,000 for the three months ended March 30, 2019 and $85,000 for the three months ended March 31, 2018, respectively from this supplier.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 30, 2019
Commitments and Contingencies	19. Commitments and Contingencies From time to time, Intevac may have certain contingent liabilities that arise in the ordinary course of its business activities. Intevac accounts for contingent liabilities when it is probable that future expenditures will be made and such expenditures can be reasonably estimated.

Recent Accounting Pronounceme_2

Recent Accounting Pronouncements (Tables)	3 Months Ended
	Mar. 30, 2019
Effect of Changes in Financial Statements Due to Adoption of New Lease Standard	The effect of the changes made to our consolidated December 30, 2018 balance sheet for the adoption of the new lease standard was as follows (in thousands): Balance at December 29, Adjustments Due to ASC 842 Balance at December 30, Prepaid expenses and other current assets $ 2,528 $ (221 )1 $ 2,307 Total current assets $ 95,633 $ (221 )1 $ 95,412 Operating lease right-of-use assets $ — $ 11,635 1,2,3 $ 11,635 Total assets $ 122,070 $ 11,414 1,2,3 $ 133,484 Current operating lease liabilities $ — $ 2,581 5 $ 2,581 Accounts payable $ 6,053 $ (4 )4 $ 6,049 Other accrued liabilities $ 4,952 $ (13 )3 $ 4,939 Total current liabilities $ 30,008 $ 2,564 3,4,5 $ 32,572 Noncurrent operating lease liabilities $ — $ 11,120 5 $ 11,120 Other long-term liabilities $ 2,438 $ (2,270 )3 $ 168 Total non-current liabilities $ 2,438 $ 8,850 3,4,5 $ 11,288 Total liabilities and stockholders’ equity $ 122,070 $ 11,414 ,4,5 $ 133,484 1 Represents prepaid rent reclassified to operating lease right-of-use assets. 2 Represents capitalization of operating lease right-of-use assets and reclassification of straight-line rent accrual, and tenant incentives. 3 Represents reclassification of straight-line rent accrual to operating lease right-of-use assets. 4 Represents accrued rent reclassified to operating lease right-of-use assets. 5 Represents recognition of operating lease liabilities.

Revenue (Tables)

Revenue (Tables)	3 Months Ended
	Mar. 30, 2019
Disaggregation of Revenue from Contracts with Customers	The following tables represent a disaggregation of revenue from contracts with customers for the three months ended March 30, 2019 and March 31, 2018 along with the reportable segment for each category. Major Products and Service Lines TFE Three Months Ended March 30, 2019 Three Months Ended March 31, 2018 (In thousands) HDD DCP PV Total HDD DCP PV Total Systems, upgrades and spare parts $ 11,050 $ — $ 6,373 $ 17,423 $ 10,393 $ 1 $ 2 $ 10,396 Field service 1,522 — — 1,522 2,355 — 38 2,393 Total TFE net revenues $ 12,572 $ — $ 6,373 $ 18,945 $ 12,748 $ 1 $ 40 $ 12,789 Three Months Ended Photonics March 30, 2019 March 31, 2018 (In thousands) Products: Military products $ 1,813 $ 2,254 Commercial products 318 — Repair and other services 561 429 Total Photonics product net revenues 2,692 2,683 Technology development: Firm Fixed Price (“FFP”) 1,692 692 Cost Plus Fixed Fee (“CPFF”) 1,496 1,790 Time and materials 2 20 Total technology development net revenues 3,190 2,502 Total Photonics net revenues $ 5,882 $ 5,185 Primary Geographical Markets Three Months Ended March 30, 2019 March 31, 2018 (In thousands) TFE Photonics Total TFE Photonics Total United States $ 161 $ 5,716 $ 5,877 $ 1,911 $ 4,762 $ 6,673 Asia 18,784 — 18,784 10,878 — 10,878 Europe — 166 166 — 293 293 Rest of World — — — — 130 130 Total net revenues $ 18,945 $ 5,882 $ 24,827 $ 12,789 $ 5,185 $ 17,974 Timing of Revenue Recognition Three Months Ended March 30, 2019 March 31, 2018 (In thousands) TFE Photonics Total TFE Photonics Total Products transferred at a point in time $ 18,945 $ 561 $ 19,506 $ 12,789 $ 429 $ 13,218 Products and services transferred over time — 5,321 5,321 — 4,756 4,756 $ 18,945 $ 5,882 $ 24,827 $ 12,789 $ 5,185 $ 17,974
Changes in Contract Assets and Contract Liabilities	The following table reflects the changes in our contract assets, which we classify as accounts receivable, unbilled or retainage, and our contract liabilities, which we classify as deferred revenue and customer advances, for the three months ended March 30 2019. March 30, 2019 December 29, 2018 Three Months Change (In thousands) TFE: Contract assets: Accounts receivable, unbilled $ 897 $ 514 $ 383 Contract liabilities: Deferred revenue $ 713 $ 633 $ 80 Customer advances 10,335 14,314 (3,979 ) $ 11,048 $ 14,947 $ (3,899 ) Photonics: Contract assets: Accounts receivable, unbilled $ 2,561 $ 1,493 $ 1,068 Retainage 131 157 (26 ) $ 2,692 $ 1,650 $ 1,042 Contract liabilities: Deferred revenue $ 784 $ 1,101 $ (317 )

Inventories (Tables)

Inventories (Tables)	3 Months Ended
	Mar. 30, 2019
Summary of Inventories	Inventories are stated at the lower of average cost or net realizable value and consist of the following: March 30, 2019 December 29, 2018 (In thousands) Raw materials $ 16,815 $ 16,354 Work-in-progress 11,933 9,134 Finished goods 1,581 5,109 $ 30,329 $ 30,597

Equity-Based Compensation (Tabl

Equity-Based Compensation (Tables)	3 Months Ended
	Mar. 30, 2019
Effect of Recording Equity-Based Compensation	The effect of recording equity-based compensation for the three-month periods ended March 30, 2019 and March 31, 2018 was as follows: Three Months Ended March 30, 2019 March 31, 2018 (In thousands) Equity-based compensation by type of award: Stock options $ 206 $ 134 RSUs 291 406 Employee stock purchase plan 259 277 Total equity-based compensation $ 756 $ 817
Summary of Stock Option Activity	Option activity as of March 30, 2019 and changes during the three months ended March 30, 2019 were as follows: Shares Weighted Average Exercise Price Options outstanding at December 29, 2018 2,070,749 $ 6.76 Options granted 13,125 $ 6.08 Options cancelled and forfeited (8,992 ) $ 7.43 Options exercised (72,122 ) $ 4.22 Options outstanding at March 30, 2019 2,002,760 $ 6.84 Options exercisable at March 30, 2019 1,300,175 $ 6.72
Employee Stock Options Weighted-Average Assumptions	Intevac estimated the weighted-average fair value of stock options and ESPP purchase rights using the following weighted-average assumptions: Three Months Ended March 30, 2019 March 31, 2018 Stock Options: Weighted-average fair value of grants per share $ 2.28 $ 2.30 Expected volatility 43.40 % 41.97 % Risk free interest rate 2.21 % 2.48 % Expected term of options (in years) 4.32 4.23 Dividend yield None None ESPP Purchase Rights: Weighted-average fair value of grants per share $ 1.89 $ 2.36 Expected volatility 50.00 % 46.60 % Risk free interest rate 2.53 % 1.82 % Expected term of purchase rights (in years) 1.0 1.25 Dividend yield None None
Summary of Restricted Stock Units Activity	A summary of the RSU activity is as follows: Shares Weighted-Average Grant Date Fair Value Non-vested RSUs at December 29, 2018 462,409 $ 6.92 Granted 8,563 $ 6.11 Vested (11,924 ) $ 6.92 Cancelled and forfeited (8,737 ) $ 6.38 Non-vested RSUs at March 30, 2019 450,311 $ 6.91

Purchased Intangible Assets, _2

Purchased Intangible Assets, Net (Tables)	3 Months Ended
	Mar. 30, 2019
Information Regarding Other Acquisition Related Intangible Assets	Details of finite-lived intangible assets by segment as of March 30, 2019, are as follows: March 30, 2019 Gross Carrying Amount Accumulated Amortization Net Carrying Amount (In thousands) TFE $ 7,172 $ (6,505 ) $ 667 Photonics 1,215 (1,147 ) 68 $ 8,387 $ (7,652 ) $ 735
Estimated Future Amortization Expense Related to Finite-Lived Purchased Intangible Assets	As of March 30, 2019, future amortization expense is expected to be as follows: (In thousands) 2019 $ 461 2020 274 $ 735

Acquisition-Related Contingen_2

Acquisition-Related Contingent Consideration (Tables)	3 Months Ended
	Mar. 30, 2019
Reconciliation of Change in Fair Value Measurement of Contingent Consideration Liability	The following table represents a reconciliation of the change in the fair value measurement of the contingent consideration liability for the three-month periods ended March 30, 2019 and March 31, 2018. Three Months Ended March 30, 2019 March 31, 2018 (In thousands) Opening balance $ 223 $ 362 Changes in fair value 7 (1 ) Cash payments made (98 ) — Closing balance $ 132 $ 361

Warranty (Tables)

Warranty (Tables)	3 Months Ended
	Mar. 30, 2019
Guarantees [Abstract]
Schedule of Product Warranty Liability [Table Text Block]	The following table displays the activity in the warranty provision account for the three-month periods ended March 30, 2019 and March 31, 2018. Three Months Ended March 30, 2019 March 31, 2018 (In thousands) Opening balance $ 997 $ 994 Expenditures incurred under warranties (167 ) (236 ) Accruals for product warranties issued during the reporting period 324 104 Adjustments to previously existing warranty accruals 143 4 Closing balance $ 1,297 $ 866 The following table displays the balance sheet classification of the warranty provision account at March 30, 2019 and at December 29, 2018. March 30, 2019 December 29, 2018 (In thousands) Other accrued liabilities $ 1,147 $ 839 Other long-term liabilities 150 158 Total warranty provision $ 1,297 $ 997

Leases (Table)

Leases (Table)	3 Months Ended
	Mar. 30, 2019
Disclosure Text Block [Abstract]
Schedule of Lease Assets and Lease Liabilities[Table text block]	The following table reflects our lease assets and our lease liabilities at March 30, 2019 and December 30, 2018. March 30, 2019 December 30, 2018 (In thousands) Assets: Operating lease right-of-use assets $ 11,076 $ 11,635 Liabilities: Current operating lease liabilities $ 2,569 $ 2,581 Noncurrent operating lease liabilities 10,491 11,120 $ 13,060 $ 13,701
Lease, Cost [Table Text Block]	The components of lease costs were as follows: Three Months Ended March 30, 2019 March 31, 2018 (In thousands) Operating lease cost $ 782 $ 759 Short-term lease cost 19 21 Total lease cost $ 801 $ 780
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	As of March 30, 2019, the maturity of operating lease liabilities was as follows: (In thousands) 2019 $ 2,543 2020 2,992 2021 2,989 2022 3,074 2023 3,161 2024 529 Total lease payments 15,288 Less: Interest (2,228 ) Present value of lease liabilities $ 13,060
Schedule of Lease Term and Discount Rate[table text block]	March 30, 2019 Weighted-average remaining lease term (in years) 4.8 Weighted-average discount rate 6.48 %
Schedule of Supplemental Cash Flow Information Related to Leases[table text block]	Supplemental cash flow information related to leases was as follows: Three Months Ended March 30, 2019 Operating cash outflows from operating leases $ 886 Right-of-use assets obtained in exchange for new operating lease liabilities $ —

Cash, Cash Equivalents and In_2

Cash, Cash Equivalents and Investments (Tables)	3 Months Ended
	Mar. 30, 2019
Cash, Cash Equivalents and Short-Term Investments and Long-Term Investments	Cash and cash equivalents, short-term investments and long-term investments consist of: March 30, 2019 Amortized Cost Unrealized Holding Gains Unrealized Holding Losses Fair Value (In thousands) Cash and cash equivalents: Cash $ 14,671 $ — $ — $ 14,671 Money market funds 5,064 — — 5,064 Commercial paper 1,497 — — 1,497 Municipal bonds 500 — — 500 U.S. treasury and agency securities 1,804 1 — 1,805 Total cash and cash equivalents $ 23,536 $ 1 $ — $ 23,537 Short-term investments: Certificates of deposit $ 3,000 $ 4 $ — $ 3,004 Commercial paper 1,899 — — 1,899 Corporate bonds and medium-term notes 2,807 2 3 2,806 Municipal bonds 500 — — 500 U.S. treasury and agency securities 3,560 — 5 3,555 Total short-term investments $ 11,766 $ 6 $ 8 $ 11,764 Long-term investments: Certificates of deposit $ 500 $ — $ — $ 500 Corporate bonds and medium-term notes 4,875 20 1 4,894 Total long-term investments $ 5,375 $ 20 $ 1 $ 5,394 Total cash, cash equivalents, and investments $ 40,677 $ 27 $ 9 $ 40,695 December 29, 2018 Amortized Cost Unrealized Holding Gains Unrealized Holding Losses Fair Value (In thousands) Cash and cash equivalents: Cash $ 13,334 $ — $ — $ 13,334 Money market funds 3,335 — — 3,335 U.S. treasury and agency securities 2,046 — — 2,046 Total cash and cash equivalents $ 18,715 $ — $ — $ 18,715 Short-term investments: Certificates of deposit $ 5,299 $ 1 $ 1 $ 5,299 Commercial paper 2,242 — 1 2,241 Corporate bonds and medium-term notes 4,759 — 13 4,746 Municipal bonds 500 — 2 498 U.S. treasury and agency securities 3,297 — 5 3,292 Total short-term investments $ 16,097 $ 1 $ 22 $ 16,076 Long-term investments: Certificates of deposit $ 500 $ — $ — $ 500 Corporate bonds and medium-term notes 2,879 4 4 2,879 U.S. treasury and agency securities 999 — 6 993 Total long-term investments $ 4,378 $ 4 $ 10 $ 4,372 Total cash, cash equivalents, and investments $ 39,190 $ 5 $ 32 $ 39,163
Contractual Maturities of Available-for-Sale Securities	The contractual maturities of available-for-sale securities at March 30, 2019 are presented in the following table. Amortized Cost Fair Value (In thousands) Due in one year or less $ 20,631 $ 20,630 Due after one through five years 5,375 5,394 $ 26,006 $ 26,024
Fair Market Value of Investments with Unrealized Losses Not Deemed to be Other-Than Temporarily Impaired	The following table provides the fair market value of Intevac’s investments with unrealized losses that are not deemed to be other-than temporarily impaired as of March 30, 2019. March 30, 2019 In Loss Position for Less than 12 Months In Loss Position for Greater than 12 Months Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses (In thousands) Corporate bonds and medium-term notes $ — $ — $ 1,097 $ 4 U.S. treasury and agency securities — — 1,994 5 $ — $ — $ 3,091 $ 9
Fair Value Hierarchy of Available-for-Sale Securities Measured at Fair Value on Recurring Basis	The following table represents the fair value hierarchy of Intevac’s available-for-sale securities measured at fair value on a recurring basis as of March 30, 2019. Fair Value Measurements at March 30, 2019 Total Level 1 Level 2 (In thousands) Recurring fair value measurements: Available-for-sale securities Money market funds $ 5,064 $ 5,064 $ — U.S. treasury and agency securities 5,360 5,360 — Certificates of deposit 3,504 — 3,504 Commercial paper 3,396 — 3,396 Corporate bonds and medium-term notes 7,700 — 7,700 Municipal bonds 1,000 — 1,000 Total recurring fair value measurements $ 26,024 $ 10,424 $ 15,600

Derivative Instruments (Tables)

Derivative Instruments (Tables)	3 Months Ended
	Mar. 30, 2019
Summary of Outstanding Derivative Instruments on Gross Basis as Recorded in Consolidated Balance Sheets	The following table summarizes the Company’s outstanding derivative instruments on a gross basis as recorded in its condensed consolidated balance sheets as of March 30, 2019 and December 29, 2018. Notional Amounts Derivative Liabilities Derivative Instrument March 30, December 29, March 30, 2019 December 29, Balance Sheet Line Fair Value Balance Sheet Line Fair Value (In thousands) Undesignated Hedges: Forward Foreign Currency Contracts $ 1,558 1,764 * $ 8 * $ 8 Total Hedges $ 1,558 1,764 $ 8 8 * Other accrued liabilities

Equity (Tables)

Equity (Tables)	3 Months Ended
	Mar. 30, 2019
Schedule of Changes in Stockholders' Equity	The changes in stockholders’ equity by component for the three months ended March 30, 2019 and March 31, 2018, are as follows (in thousands): Three Months Ended March 30, 2019 Common Stock and Accumulated Additional Other Total Paid-in Treasury Comprehensive Accumulated Stockholders’ Capital Stock Income Deficit Equity Balance at December 29, 2018 $ 183,227 $ (29,047 ) $ 378 $ (64,934 ) $ 89,624 Common stock issued under employee plans 993 — — — 993 Equity-based compensation expense 756 — — — 756 Net loss — — — (2,392 ) (2,392 ) Other comprehensive income — — 106 — 106 Balance at March 30, 2019 $ 184,976 $ (29,047 ) $ 484 $ (67,326 ) $ 89,087 Three Months Ended March 31, 2018 Common Stock and Accumulated Additional Other Total Paid-in Treasury Comprehensive Accumulated Stockholders’ Capital Stock Income Deficit Equity Balance at December 30, 2017 $ 177,543 $ (28,489 ) $ 490 $ (66,881 ) $ 82,663 Cumulative effect of accounting change — — — (1,634 ) (1,634 ) Common stock issued under employee plans 1,732 — — — 1,732 Equity-based compensation expense 817 — — — 817 Net loss — — — (5,136 ) (5,136 ) Other comprehensive income — — 76 — 76 Balance at March 30, 2018 $ 180,092 $ (28,489 ) $ 566 $ (73,651 ) $ 78,518
Changes in Accumulated Other Comprehensive Income by Component	The changes in accumulated other comprehensive income by component for the three months ended March 30, 2019 and March 31, 2018, are as follows: Three Months Ended March 30, 2019 March 31, 2018 Foreign currency Unrealized holding gains (losses) on available- for-sale investments Total Foreign currency Unrealized holding gains (losses) on available- for-sale investments Total (In thousands) Beginning balance $ 405 $ (27 ) $ 378 $ 535 $ (45 ) $ 490 Other comprehensive income before reclassification 61 45 106 104 (28 ) 76 Amounts reclassified from other comprehensive income — — — — — — Net current-period other comprehensive income 61 45 106 104 (28 ) 76 Ending balance $ 466 $ 18 $ 484 $ 639 $ (73 ) $ 566

Net Loss Per Share (Tables)

Net Loss Per Share (Tables)	3 Months Ended
	Mar. 30, 2019
Computation of Basic and Diluted Net loss Per Share	The following table sets forth the computation of basic and diluted net loss per share. Three Months Ended March 30, 2019 March 31, 2018 (In thousands) Net loss $ (2,392 ) $ (5,136 ) Weighted-average shares — basic 22,855 22,107 Effect of dilutive potential common shares — — Weighted-average shares — diluted 22,855 22,107 Net loss per share — basic and diluted $ (0.10 ) $ (0.23 )

Segment Reporting (Tables)

Segment Reporting (Tables)	3 Months Ended
	Mar. 30, 2019
Information for Each Reportable Segment	Information for each reportable segment for the three months ended March 30, 2019 and March 31, 2018 is as follows: Net Revenues Three Months Ended March 30, 2019 March 31, 2018 (In thousands) TFE $ 18,945 $ 12,789 Photonics 5,882 5,185 Total segment net revenues $ 24,827 $ 17,974 Operating Loss Three Months Ended March 30, 2019 March 31, 2018 (In thousands) TFE $ (603 ) $ (2,509 ) Photonics (640 ) (1,210 ) Total segment operating loss (1,243 ) (3,719 ) Unallocated costs (756 ) (1,402 ) Loss from operations (1,999 ) (5,121 ) Interest income and other income (expense), net 160 145 Loss before income taxes $ (1,839 ) $ (4,976 )
Segment Assets	Total assets for each reportable segment as of March 30, 2019 and December 29, 2018 are as follows: Assets March 30, 2019 December 29, 2018 (In thousands) TFE $ 52,417 $ 53,867 Photonics 18,115 16,721 Total segment assets 70,532 70,588 Cash, cash equivalents and investments 40,695 39,163 Restricted cash 1,254 1,169 Deferred income taxes 7,581 7,913 Other current assets 1,124 1,341 Common property, plant and equipment 1,026 1,017 Common operating lease right-of-use assets 2,194 — Other assets 887 879 Consolidated total assets $ 125,293 $ 122,070

Restructuring Charges (Tables)

Restructuring Charges (Tables)	3 Months Ended
	Mar. 30, 2019
Changes in Restructuring Reserves	The changes in restructuring reserves associated with the Reduction Plan for the three months ended March 31, 2018 are as follows: Three Months Ended March 31, 2018 Severance and other employee- related costs (In thousands) Beginning balance $ — Provision for restructuring reserves 95 Cash payments made (95 ) Ending balance $ —

Recent Accounting Pronounceme_3

Recent Accounting Pronouncements - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 30, 2018	Dec. 29, 2018
net lease assets	$ 11,076	$ 11,635
lease liabilities	$ 13,060	$ 13,701

Effect of Changes in Balance Sh

Effect of Changes in Balance Sheet Due to Adoption of New Revenue Standard (Detail) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 30, 2018	Dec. 29, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Prepaid expenses and other current assets	$ 2,173		$ 2,528
Total current assets	87,799		95,633
Operating lease right-of-use assets	11,076	$ 11,635
Total assets	125,293		122,070
Current operating lease liabilities	2,569	2,581
Accounts payable	4,867		6,053
Other accrued liabilities	4,327		4,952
Total current liabilities	25,555		30,008
Noncurrent operating lease liabilities	10,491	11,120
Other long-term liabilities	160		2,438
Total non-current liabilities	10,651		2,438
Total liabilities and stockholders' equity	$ 125,293		122,070
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Prepaid expenses and other current assets		2,307
Total current assets		95,412
Operating lease right-of-use assets		11,635
Total assets		133,484
Current operating lease liabilities		2,581
Accounts payable		6,049
Other accrued liabilities		4,939
Total current liabilities		32,572
Noncurrent operating lease liabilities		11,120
Other long-term liabilities		168
Total non-current liabilities		11,288
Total liabilities and stockholders' equity		133,484
Previously Reported | Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Prepaid expenses and other current assets			2,528
Total current assets			95,633
Operating lease right-of-use assets
Total assets			122,070
Current operating lease liabilities
Accounts payable			6,053
Other accrued liabilities			4,952
Total current liabilities			30,008
Noncurrent operating lease liabilities
Other long-term liabilities			2,438
Total non-current liabilities			2,438
Total liabilities and stockholders' equity			$ 122,070
Restatement Adjustment | Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Prepaid expenses and other current assets		(221)
Total current assets		(221)
Operating lease right-of-use assets		11,635
Total assets		11,414
Current operating lease liabilities		2,581
Accounts payable		(4)
Other accrued liabilities		(13)
Total current liabilities		2,564
Noncurrent operating lease liabilities		11,120
Other long-term liabilities		(2,270)
Total non-current liabilities		8,850
Total liabilities and stockholders' equity		$ 11,414

Revenue -Disaggregation of Reve

Revenue -Disaggregation of Revenue from Contracts with Customers (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Disaggregation of Revenue [Line Items]
Total net revenues	$ 24,827	$ 17,974
TFE
Disaggregation of Revenue [Line Items]
Total net revenues	18,945	12,789
TFE | Systems, Upgrades and Spare Parts
Disaggregation of Revenue [Line Items]
Total net revenues	17,423	10,396
TFE | Field Service
Disaggregation of Revenue [Line Items]
Total net revenues	1,522	2,393
Photonics
Disaggregation of Revenue [Line Items]
Total net revenues	5,882	5,185
HDD | TFE
Disaggregation of Revenue [Line Items]
Total net revenues	12,572	12,748
HDD | TFE | Systems, Upgrades and Spare Parts
Disaggregation of Revenue [Line Items]
Total net revenues	11,050	10,393
HDD | TFE | Field Service
Disaggregation of Revenue [Line Items]
Total net revenues	1,522	2,355
DCP | TFE
Disaggregation of Revenue [Line Items]
Total net revenues		1
DCP | TFE | Systems, Upgrades and Spare Parts
Disaggregation of Revenue [Line Items]
Total net revenues		1
PV | TFE
Disaggregation of Revenue [Line Items]
Total net revenues	6,373	40
PV | TFE | Systems, Upgrades and Spare Parts
Disaggregation of Revenue [Line Items]
Total net revenues	6,373	2
PV | TFE | Field Service
Disaggregation of Revenue [Line Items]
Total net revenues		38
Military Products | Photonics
Disaggregation of Revenue [Line Items]
Total net revenues	1,813	2,254
Commercial Products | Photonics
Disaggregation of Revenue [Line Items]
Total net revenues	318
Repair and Other Services | Photonics
Disaggregation of Revenue [Line Items]
Total net revenues	561	429
Product | Photonics
Disaggregation of Revenue [Line Items]
Total net revenues	2,692	2,683
FFP | Photonics
Disaggregation of Revenue [Line Items]
Total net revenues	1,692	692
CPFF | Photonics
Disaggregation of Revenue [Line Items]
Total net revenues	1,496	1,790
Times and Materials | Photonics
Disaggregation of Revenue [Line Items]
Total net revenues	2	20
Technology Development | Photonics
Disaggregation of Revenue [Line Items]
Total net revenues	$ 3,190	$ 2,502

Revenue - Primary Geography Mar

Revenue - Primary Geography Markets (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Disaggregation of Revenue [Line Items]
Total net revenues	$ 24,827	$ 17,974
Products Transferred at a Point in Time
Disaggregation of Revenue [Line Items]
Total net revenues	19,506	13,218
Products and Services Transferred Over Time
Disaggregation of Revenue [Line Items]
Total net revenues	5,321	4,756
United States
Disaggregation of Revenue [Line Items]
Total net revenues	5,877	6,673
Asia
Disaggregation of Revenue [Line Items]
Total net revenues	18,784	10,878
Europe
Disaggregation of Revenue [Line Items]
Total net revenues	166	293
Rest of World
Disaggregation of Revenue [Line Items]
Total net revenues		130
TFE
Disaggregation of Revenue [Line Items]
Total net revenues	18,945	12,789
TFE | Products Transferred at a Point in Time
Disaggregation of Revenue [Line Items]
Total net revenues	18,945	12,789
TFE | United States
Disaggregation of Revenue [Line Items]
Total net revenues	161	1,911
TFE | Asia
Disaggregation of Revenue [Line Items]
Total net revenues	18,784	10,878
Photonics
Disaggregation of Revenue [Line Items]
Total net revenues	5,882	5,185
Photonics | Products Transferred at a Point in Time
Disaggregation of Revenue [Line Items]
Total net revenues	561	429
Photonics | Products and Services Transferred Over Time
Disaggregation of Revenue [Line Items]
Total net revenues	5,321	4,756
Photonics | United States
Disaggregation of Revenue [Line Items]
Total net revenues	5,716	4,762
Photonics | Asia
Disaggregation of Revenue [Line Items]
Total net revenues
Photonics | Europe
Disaggregation of Revenue [Line Items]
Total net revenues	166	293
Photonics | Rest of World
Disaggregation of Revenue [Line Items]
Total net revenues		$ 130

Revenue - Changes in Contract A

Revenue - Changes in Contract Assets and Contract Liabilities (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Dec. 29, 2018
TFE
Contract liabilities:
Contract liabilities	$ 11,048	$ 14,947
Contract liabilities:
Change in contract liabilities	(3,899)
TFE | Accounts Receivable, Unbilled
Contract assets:
Contract assets	897	514
Contract assets:
Change in contract assets	383
TFE | Deferred Revenue
Contract liabilities:
Contract liabilities	713	633
Contract liabilities:
Change in contract liabilities	80
TFE | Customer Advances
Contract liabilities:
Contract liabilities	10,335	14,314
Contract liabilities:
Change in contract liabilities	(3,979)
Photonics
Contract assets:
Contract assets	2,692	1,650
Contract assets:
Change in contract assets	1,042
Photonics | Accounts Receivable, Unbilled
Contract assets:
Contract assets	2,561	1,493
Contract assets:
Change in contract assets	1,068
Photonics | Deferred Revenue
Contract liabilities:
Contract liabilities	784	1,101
Contract liabilities:
Change in contract liabilities	(317)
Photonics | Retainage
Contract assets:
Contract assets	131	$ 157
Contract assets:
Change in contract assets	$ (26)

Revenue - Additional Informatio

Revenue - Additional Information (Detail)	3 Months Ended
	Mar. 30, 2019USD ($)Installment	Dec. 29, 2018USD ($)
Revenue From Contract With Customers [Line Items]
Revenue remaining performance obligation	$ 102,600,000
Revenue performance obligation, description of timing	We expect to recognize approximately 69% of our remaining performance obligations as revenue in 2019, and the balance in 2020.
TFE
Revenue From Contract With Customers [Line Items]
Contract liabilities	$ 11,048,000	$ 14,947,000
Revenue remaining performance obligation	$ 59,300,000
TFE | Accounts Receivable, Unbilled
Revenue From Contract With Customers [Line Items]
Number of installments | Installment	3
Change in contract assets	$ 383,000
TFE | Customer Advances
Revenue From Contract With Customers [Line Items]
Contract with customer liability revenue recognized	6,500,000
Contract liabilities	10,335,000	14,314,000
TFE | Deferred Revenue
Revenue From Contract With Customers [Line Items]
Contract with customer liability revenue recognized	209,000
Contract liabilities	713,000	633,000
Photonics
Revenue From Contract With Customers [Line Items]
Change in contract assets	1,042,000
Revenue remaining performance obligation	43,300,000
Photonics | Accounts Receivable, Unbilled
Revenue From Contract With Customers [Line Items]
Change in contract assets	1,068,000
Photonics | Deferred Revenue
Revenue From Contract With Customers [Line Items]
Contract with customer liability revenue recognized	317,000
Contract liabilities	$ 784,000	$ 1,101,000

Inventories Stated at Lower of

Inventories Stated at Lower of Average Cost or Net Realizable Value (Detail) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 29, 2018
Inventory [Line Items]
Raw materials	$ 16,815	$ 16,354
Work-in-progress	11,933	9,134
Finished goods	1,581	5,109
Inventories	$ 30,329	$ 30,597

Equity-Based Compensation - Add

Equity-Based Compensation - Additional information (Detail)	12 Months Ended
	Dec. 29, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase of common stock through payroll deductions	85.00%
Maximum employee salary withholdings for purchase of common stock under the terms of the ESPP	15.00%

Effect of Recording Equity-Base

Effect of Recording Equity-Based Compensation (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	$ 756	$ 817
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	206	134
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	291	406
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	$ 259	$ 277

Option Activity and Changes (De

Option Activity and Changes (Detail)	3 Months Ended
	Mar. 30, 2019$ / sharesshares
Shares
Options outstanding at December 29, 2018 | shares	2,070,749
Options granted | shares	13,125
Options cancelled and forfeited | shares	(8,992)
Options exercised | shares	(72,122)
Options outstanding at March 30, 2019 | shares	2,002,760
Options exercisable at March 30, 2019 | shares	1,300,175
Weighted Average Exercise Price
Options outstanding at December 29, 2018 | $ / shares	$ 6.76
Options granted | $ / shares	6.08
Options cancelled and forfeited | $ / shares	7.43
Options exercised | $ / shares	4.22
Options outstanding at March 30, 2019 | $ / shares	6.84
Options exercisable at March 30, 2019 | $ / shares	$ 6.72

Weighted-Average Fair Value of

Weighted-Average Fair Value of Stock Options and Employee Stock Purchase Rights using Weighted-Average Assumptions (Detail) - $ / shares	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Stock Options
Weighted-average assumptions
Weighted-average fair value of grants per share	$ 2.28	$ 2.30
Expected volatility	43.40%	41.97%
Risk free interest rate	2.21%	2.48%
Expected term of options (in years)	4 years 3 months 25 days	4 years 2 months 23 days
Dividend yield	0.00%	0.00%
Stock Purchase Rights
Weighted-average assumptions
Weighted-average fair value of grants per share	$ 1.89	$ 2.36
Expected volatility	50.00%	46.60%
Risk free interest rate	2.53%	1.82%
Expected term of options (in years)	1 year	1 year 3 months
Dividend yield	0.00%	0.00%

Summary of Restricted Stock Uni

Summary of Restricted Stock Units Activity (Detail) - Restricted Stock Units (RSUs)	3 Months Ended
	Mar. 30, 2019$ / sharesshares
Shares
Non-vested RSUs at December 29, 2018 | shares	462,409
Granted | shares	8,563
Vested | shares	(11,924)
Cancelled | shares	(8,737)
Non-vested RSUs at March 30, 2019 | shares	450,311
Weighted Average Grant Date Fair Value
Non-vested RSUs at December 29, 2018 | $ / shares	$ 6.92
Granted | $ / shares	6.11
Vested | $ / shares	6.92
Cancelled | $ / shares	6.38
Non-vested RSUs at March 30, 2019 | $ / shares	$ 6.91

Purchased Intangible Assets, _3

Purchased Intangible Assets, Net - Additional Information (Detail)	3 Months Ended
	Mar. 30, 2019USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Total amortization expense of finite-lived intangibles	$ 154,000

Details of Finite-lived Intangi

Details of Finite-lived Intangible Assets by Segment (Detail) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 29, 2018
Finite-Lived Intangible Assets [Line Items]
Finite Lived, Gross Carrying Amount	$ 8,387
Accumulated Amortization	(7,652)	$ (7,498)
Finite Lived, Net Carrying Amount	735	$ 889
TFE
Finite-Lived Intangible Assets [Line Items]
Finite Lived, Gross Carrying Amount	7,172
Accumulated Amortization	(6,505)
Finite Lived, Net Carrying Amount	667
Photonics
Finite-Lived Intangible Assets [Line Items]
Finite Lived, Gross Carrying Amount	1,215
Accumulated Amortization	(1,147)
Finite Lived, Net Carrying Amount	$ 68

Future Amortization Expense (De

Future Amortization Expense (Detail) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 29, 2018
Finite-Lived Intangible Assets [Line Items]
2019	$ 461
2020	274
Finite Lived, Net Carrying Amount	$ 735	$ 889

Acquisition-Related Contingen_3

Acquisition-Related Contingent Consideration - Additional Information (Detail) - USD ($)	Mar. 30, 2019	Dec. 29, 2018	Nov. 19, 2010
Business Acquisition [Line Items]
contingent consideration liability	$ 132,000	$ 223,000
Solar Implant Technologies | Revenue Earnout
Business Acquisition [Line Items]
Maximum amount of cash potentially earned in contingent compensation arrangements			$ 9,000,000

Reconciliation of Change in Fai

Reconciliation of Change in Fair Value Measurement of Contingent Consideration Liability (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Business Acquisition, Contingent Consideration [Line Items]
Opening balance	$ 223	$ 362
Changes in fair value	7	(1)
Cash payments made	(98)	0
Closing balance	$ 132	$ 361

Warranty - Additional Informati

Warranty - Additional Information (Detail)	3 Months Ended
	Mar. 30, 2019
Warranties [Line Items]
Minimum Product Warranty Range	12 months
Maximum Product Warranty Range	24 months

Activity in Warranty Provision

Activity in Warranty Provision Account (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Accrued Warranty [Line Items]
Opening balance	$ 997	$ 994
Expenditures incurred under warranties	(167)	(236)
Accruals for product warranties issued during the reporting period	324	104
Adjustments to previously existing warranty accruals	143	4
Closing balance	$ 1,297	$ 866

Balance Sheet Classification of

Balance Sheet Classification of Warranty Provision Account (Detail) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 29, 2018	Mar. 31, 2018	Dec. 31, 2017
Product Warranty Liability [Line Items]
Other accrued liabilities	$ 1,147	$ 839
Other long-term liabilities	150	158
Total warranty provision	$ 1,297	$ 997	$ 866	$ 994

Guarantees - Additional Informa

Guarantees - Additional Information (Detail) $ in Millions	Mar. 30, 2019USD ($)
Guarantor Obligations [Line Items]
Letters of credit and bank guarantees outstanding, amount	$ 1.3
Letters of credit and bank guarantees collateralized by restricted cash	$ 1.3

Leases - lease assets and our l

Leases - lease assets and our lease liabilities (Detail) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 30, 2018	Dec. 29, 2018
Assets:
Operating lease right-of-use assets	$ 11,076	$ 11,635
Liabilities:
Current operating lease liabilities	2,569	2,581
Noncurrent operating lease liabilities	10,491	11,120
Operating Lease, Liability	$ 13,060	$ 13,701

Leases - lease costs (Details)

Leases - lease costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Operating lease cost	$ 782	$ 759
Short-term lease cost	19	21
Total lease cost	$ 801	$ 780

Leases - Future Minimum Lease P

Leases - Future Minimum Lease Payments (Detail) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 30, 2018
Operating Leased Assets [Line Items]
2019	$ 2,543
2020	2,992
2021	2,989
2022	3,074
2023	3,161
2024	529
Total lease payments	15,288
Less: Interest	(2,228)
Present value of lease liabilities	$ 13,060	$ 13,701

Leases - Lease Term and Discoun

Leases - Lease Term and Discount Rate (Detail)	Mar. 30, 2019
Weighted-average remaining lease term (in years)	4 years 9 months 18 days
Weighted-average discount rate	6.48%

Leases - Supplemental cash flow

Leases - Supplemental cash flow information related to leases (Detail) $ in Thousands	3 Months Ended
	Mar. 30, 2019USD ($)
Operating cash outflows from operating leases	$ 886
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 0

Cash, Cash Equivalents and Shor

Cash, Cash Equivalents and Short-Term Investments and Long-Term Investments (Detail) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 29, 2018
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 40,677	$ 39,190
Unrealized Holdings Gains	27	5
Unrealized Holdings Losses	9	32
Fair Value	40,695	39,163
Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	23,536	18,715
Unrealized Holdings Gains	1
Fair Value	23,537	18,715
Cash and Cash Equivalents | Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	500
Fair Value	500
Cash and Cash Equivalents | U.S. treasury and agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,804	2,046
Unrealized Holdings Gains	1
Fair Value	1,805	2,046
Cash and Cash Equivalents | Cash
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	14,671	13,334
Fair Value	14,671	13,334
Cash and Cash Equivalents | Money market funds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	5,064	3,335
Fair Value	5,064	3,335
Cash and Cash Equivalents | Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,497
Fair Value	1,497
Short-term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	11,766	16,097
Unrealized Holdings Gains	6	1
Unrealized Holdings Losses	8	22
Fair Value	11,764	16,076
Short-term Investments | Corporate bonds and medium-term notes
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,807	4,759
Unrealized Holdings Gains	2
Unrealized Holdings Losses	3	13
Fair Value	2,806	4,746
Short-term Investments | Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	500	500
Unrealized Holdings Losses		2
Fair Value	500	498
Short-term Investments | U.S. treasury and agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,560	3,297
Unrealized Holdings Losses	5	5
Fair Value	3,555	3,292
Short-term Investments | Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,000	5,299
Unrealized Holdings Gains	4	1
Unrealized Holdings Losses		1
Fair Value	3,004	5,299
Short-term Investments | Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,899	2,242
Unrealized Holdings Losses		1
Fair Value	1,899	2,241
Other Long-term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	5,375	4,378
Unrealized Holdings Gains	20	4
Unrealized Holdings Losses	1	10
Fair Value	5,394	4,372
Other Long-term Investments | Corporate bonds and medium-term notes
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	4,875	2,879
Unrealized Holdings Gains	20	4
Unrealized Holdings Losses	1	4
Fair Value	4,894	2,879
Other Long-term Investments | U.S. treasury and agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		999
Unrealized Holdings Losses		6
Fair Value		993
Other Long-term Investments | Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	500	500
Fair Value	$ 500	$ 500

Contractual Maturities of Avail

Contractual Maturities of Available-For-Sale Securities (Detail) $ in Thousands	Mar. 30, 2019USD ($)
Investments, Debt and Equity Securities [Abstract]
Amortized Cost, Due in one year or less	$ 20,631
Amortized Cost, Due after one through five years	5,375
Amortized Cost	26,006
Fair Value, Due in one year or less	20,630
Fair Value, Due after one through five years	5,394
Fair Value	$ 26,024

Fair Market Value of Investment

Fair Market Value of Investments with Unrealized Losses Not Deemed to be Other-Than Temporarily Impaired (Detail) $ in Thousands	Mar. 30, 2019USD ($)
Debt Securities, Available-for-sale [Line Items]
Unrealized Loss Position, Less than 12 Months, Fair Value	$ 0
Unrealized Loss Position, Less than 12 Months, Gross Unrealized Losses	0
Unrealized Loss Position, Greater than 12 Months, Fair Value	3,091
Unrealized Loss Position, Greater than 12 Months, Gross Unrealized Losses	9
Corporate bonds and medium-term notes
Debt Securities, Available-for-sale [Line Items]
Unrealized Loss Position, Less than 12 Months, Fair Value	0
Unrealized Loss Position, Less than 12 Months, Gross Unrealized Losses	0
Unrealized Loss Position, Greater than 12 Months, Fair Value	1,097
Unrealized Loss Position, Greater than 12 Months, Gross Unrealized Losses	4
U.S. treasury and agency securities
Debt Securities, Available-for-sale [Line Items]
Unrealized Loss Position, Less than 12 Months, Fair Value	0
Unrealized Loss Position, Less than 12 Months, Gross Unrealized Losses	0
Unrealized Loss Position, Greater than 12 Months, Fair Value	1,994
Unrealized Loss Position, Greater than 12 Months, Gross Unrealized Losses	$ 5

Fair Value Hierarchy of Availab

Fair Value Hierarchy of Available-for-Sale Securities Measured at Fair Value on Recurring Basis (Detail) $ in Thousands	Mar. 30, 2019USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring fair value measurements	$ 26,024
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring fair value measurements	26,024
Fair Value, Measurements, Recurring | Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring fair value measurements	5,064
Fair Value, Measurements, Recurring | Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring fair value measurements	3,504
Fair Value, Measurements, Recurring | Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring fair value measurements	3,396
Fair Value, Measurements, Recurring | U.S. treasury and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring fair value measurements	5,360
Fair Value, Measurements, Recurring | Corporate bonds and medium-term notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring fair value measurements	7,700
Fair Value, Measurements, Recurring | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring fair value measurements	1,000
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring fair value measurements	10,424
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring fair value measurements	5,064
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | U.S. treasury and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring fair value measurements	5,360
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring fair value measurements	15,600
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring fair value measurements	3,504
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring fair value measurements	3,396
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Corporate bonds and medium-term notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring fair value measurements	7,700
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total recurring fair value measurements	$ 1,000

Derivative Instruments - Additi

Derivative Instruments - Additional Information (Detail)	3 Months Ended
	Mar. 30, 2019
Derivative [Line Items]
Maturity of foreign currency derivative	30 days

Summary of Outstanding Derivati

Summary of Outstanding Derivative Instruments on Gross Basis as Recorded in Consolidated Balance Sheets (Detail) - Undesignated Hedges - USD ($) $ in Thousands		Mar. 30, 2019	Dec. 29, 2018
Derivatives, Fair Value [Line Items]
Notional Amounts		$ 1,558	$ 1,764
Derivative Liabilities		8	8
Forward foreign currency contracts
Derivatives, Fair Value [Line Items]
Notional Amounts		1,558	1,764
Derivative Liabilities	[1],[2]	$ 8	$ 8
[1]	Other accrued liabilities
[2]	Represents recognition of operating lease liabilities.

Equity - Schedule of Changes in

Equity - Schedule of Changes in Stockholders' Equity (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Class of Stock [Line Items]
Beginning balance	$ 89,624	$ 82,663
Cumulative effect of accounting change		(1,634)
Common stock issued under employee plans	993	1,732
Equity-based compensation expense	756	817
Net loss	(2,392)	(5,136)
Other comprehensive income	106	76
Ending balance	89,087	78,518
Common Stock and Additional Paid-in Capital
Class of Stock [Line Items]
Beginning balance	183,227	177,543
Common stock issued under employee plans	993	1,732
Equity-based compensation expense	756	817
Ending balance	184,976	180,092
Treasury Stock
Class of Stock [Line Items]
Beginning balance	(29,047)	(28,489)
Ending balance	(29,047)	(28,489)
Accumulated Other Comprehensive Income
Class of Stock [Line Items]
Beginning balance	378	490
Other comprehensive income	106	76
Ending balance	484	566
Accumulated Deficit
Class of Stock [Line Items]
Beginning balance	(64,934)	(66,881)
Cumulative effect of accounting change		(1,634)
Net loss	(2,392)	(5,136)
Ending balance	$ (67,326)	$ (73,651)

Changes in Accumulated Other Co

Changes in Accumulated Other Comprehensive Income by Component (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 89,624	$ 82,663
Other comprehensive income, net of tax	106	76
Ending balance	89,087	78,518
Foreign currency
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	405	535
Other comprehensive income (loss) before reclassification	61	104
Amounts reclassified from other comprehensive income (loss)	0	0
Other comprehensive income, net of tax	61	104
Ending balance	466	639
Unrealized holding gains (losses) on available- for-sale investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(27)	(45)
Other comprehensive income (loss) before reclassification	45	(28)
Amounts reclassified from other comprehensive income (loss)	0	0
Other comprehensive income, net of tax	45	(28)
Ending balance	18	(73)
Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	378	490
Other comprehensive income (loss) before reclassification	106	76
Amounts reclassified from other comprehensive income (loss)	0	0
Other comprehensive income, net of tax	106	76
Ending balance	$ 484	$ 566

Equity - Additional Information

Equity - Additional Information (Detail) - USD ($) $ in Millions	Aug. 15, 2018	Mar. 30, 2019	Mar. 31, 2018	Nov. 21, 2013
Equity, Class of Treasury Stock [Line Items]
Stock repurchase authorized amount	$ 40			$ 30
Stock repurchase remained available for future stock repurchase		$ 10.9
Increase in stock repurchase program	$ 10
Stock repurchased		0	0

Computation of Basic and Dilute

Computation of Basic and Diluted Net Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Schedule Of Computation Of Basic And Diluted Earnings Per Common Share [Line Items]
Net loss	$ (2,392)	$ (5,136)
Weighted-average shares - basic	22,855	22,107
Effect of dilutive potential common shares	0	0
Weighted-average shares - diluted	22,855	22,107
Net loss per share - basic and diluted	$ (0.10)	$ (0.23)

Segment Reporting - Additional

Segment Reporting - Additional Information (Detail)	3 Months Ended
	Mar. 30, 2019
Segment Reporting Disclosure [Line Items]
Number of reportable segments	2
Allocation of corporate expenses to the segments	3.00%

Information for Each Reportable

Information for Each Reportable Segment (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Segment Reporting Information [Line Items]
Total segment net revenues	$ 24,827	$ 17,974
Loss from operations	(1,999)	(5,121)
Interest income and other income (expense), net	160	145
Loss before income taxes	(1,839)	(4,976)
TFE
Segment Reporting Information [Line Items]
Total segment net revenues	18,945	12,789
Photonics
Segment Reporting Information [Line Items]
Total segment net revenues	5,882	5,185
Operating Segments
Segment Reporting Information [Line Items]
Loss from operations	(1,243)	(3,719)
Operating Segments | TFE
Segment Reporting Information [Line Items]
Loss from operations	(603)	(2,509)
Operating Segments | Photonics
Segment Reporting Information [Line Items]
Loss from operations	(640)	(1,210)
Unallocated Amount to Segment
Segment Reporting Information [Line Items]
Unallocated costs	$ (756)	$ (1,402)

Assets for Each Reportable Segm

Assets for Each Reportable Segment (Detail) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 29, 2018
Segment Reporting, Asset Reconciling Item [Line Items]
Cash, cash equivalents and investments	$ 40,695	$ 39,163
Restricted cash	1,254	1,169
Deferred income taxes	7,581	7,913
Other current assets	1,124	1,341
Common property, plant and equipment	1,026	1,017
Common operating lease right-of-use assets	2,194	0
Other assets	887	879
Consolidated total assets	125,293	122,070
Operating Segments
Segment Reporting, Asset Reconciling Item [Line Items]
Consolidated total assets	70,532	70,588
Operating Segments | TFE
Segment Reporting, Asset Reconciling Item [Line Items]
Consolidated total assets	52,417	53,867
Operating Segments | Photonics
Segment Reporting, Asset Reconciling Item [Line Items]
Consolidated total assets	$ 18,115	$ 16,721

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Dec. 29, 2018
Income Taxes [Line Items]
Provision for income taxes	$ 553,000	$ 160,000
Income tax provision on earnings of subsidiaries	362,000
Inland Revenue, Singapore (IRAS)
Income Taxes [Line Items]
Deposit for contested taxes and related interest	730,000		$ 723,000
Foreign Tax Authority | Singapore
Income Taxes [Line Items]
Income tax charge (benefit)	$ 191,000	$ 145,000

Restructuring Charges - Additio

Restructuring Charges - Additional Information (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)
Restructuring Cost and Reserve [Line Items]
Percentage of reduction of global workforce	6.00%
Reduction in salary, wages and other employee-related expenses due to implementation of plan	$ 1.8

Changes in Restructuring Reserv

Changes in Restructuring Reserves (Detail) - Severance And Other Employee Related Costs $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 0
Provision for restructuring reserves	95
Cash payments made	(95)
Ending balance	$ 0

Related Party Transaction - Add

Related Party Transaction - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Related party transaction, purchases from related party	$ 152,000	$ 85,000