Intevac (IVAC) 10-Q 30 Jul 19 2019 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 29, 2019	Jul. 24, 2019
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 29, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Entity Registrant Name	INTEVAC INC
Entity Central Index Key	0001001902
Current Fiscal Year End Date	--12-28
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Trading Symbol	IVAC
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity File Number	0-26946
Entity Tax Identification Number	943125814
Entity Address, Address Line One	3560 Bassett Street
Entity Address, City or Town	Santa Clara
Entity Address, State or Province	California
Entity Address, Postal Zip Code	95054
City Area Code	408
Local Phone Number	986-9888
Entity Small Business	true
Entity Common Stock, Shares Outstanding		22,999,856

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 29, 2019	Dec. 29, 2018
Current assets:
Cash and cash equivalents	$ 23,531	$ 18,715
Short-term investments	13,311	16,076
Trade and other accounts receivable, net of allowances of $0 at both June 29, 2019 and at December 29, 2018	18,317	27,717
Inventories	32,590	30,597
Prepaid expenses and other current assets	1,997	2,528
Total current assets	89,746	95,633
Long-term investments	2,437	4,372
Restricted cash	1,255	1,169
Property, plant and equipment, net	11,055	11,198
Operating lease right-of-use-assets	10,503
Intangible assets, net of accumulated amortization of $7,806 at June 29, 2019 and $7,498 at December 29, 2018	581	889
Deferred income taxes and other long-term assets	8,302	8,809
Total assets	123,879	122,070
Current liabilities:
Current operating lease liabilities	2,486
Accounts payable	5,708	6,053
Accrued payroll and related liabilities	5,221	4,689
Other accrued liabilities	4,100	4,952
Customer advances	7,916	14,314
Total current liabilities	25,431	30,008
Noncurrent liabilities:
Noncurrent operating lease liabilities	9,925
Other long-term liabilities	176	2,438
Total noncurrent liabilities	10,101	2,438
Stockholders' equity:
Common stock, $0.001 par value	23	23
Additional paid-in capital	185,466	183,204
Treasury stock, 4,974 shares at June 29, 2019 and 4,965 shares at December 29, 2018	(29,089)	(29,047)
Accumulated other comprehensive income	455	378
Accumulated deficit	(68,508)	(64,934)
Total stockholders' equity	88,347	89,624
Total liabilities and stockholders' equity	$ 123,879	$ 122,070

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Jun. 29, 2019	Dec. 29, 2018
Statement Of Financial Position [Abstract]
Net of allowances of trade, note and other accounts receivable	$ 0	$ 0
Net of amortization of intangible assets	$ 7,806	$ 7,498
Common stock, par value	$ 0.001	$ 0.001
Treasury stock, shares	4,974	4,965

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Net revenues:
Total net revenues	$ 22,314	$ 26,098	$ 47,141	$ 44,072
Cost of net revenues:
Total cost of net revenues	13,957	16,337	31,544	29,436
Gross profit	8,357	9,761	15,597	14,636
Operating expenses:
Research and development	3,431	4,984	7,417	9,151
Selling, general and administrative	5,854	4,712	11,105	10,541
Total operating expenses	9,285	9,696	18,522	19,692
Income (loss) from operations	(928)	65	(2,925)	(5,056)
Interest income and other income (expense), net	163	133	322	278
Income (loss) before income taxes	(765)	198	(2,603)	(4,778)
Provision for income taxes	417	365	971	525
Net loss	$ (1,182)	$ (167)	$ (3,574)	$ (5,303)
Net loss per share:
Basic and Diluted	$ (0.05)	$ (0.01)	$ (0.16)	$ (0.24)
Weighted average common shares outstanding:
Basic and Diluted	22,991	22,461	22,923	22,284
Systems and Components
Net revenues:
Total net revenues	$ 17,237	$ 23,335	$ 38,874	$ 38,807
Cost of net revenues:
Total cost of net revenues	10,462	13,868	25,560	24,596
Technology Development
Net revenues:
Total net revenues	5,077	2,763	8,267	5,265
Cost of net revenues:
Total cost of net revenues	$ 3,495	$ 2,469	$ 5,984	$ 4,840

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (1,182)	$ (167)	$ (3,574)	$ (5,303)
Other comprehensive income (loss), before tax:
Change in unrealized net loss on available-for-sale investments	32	22	77	(6)
Foreign currency translation gains (losses)	(61)	(144)		(40)
Other comprehensive income (loss), before tax	(29)	(122)	77	(46)
Other comprehensive income (loss), net of tax	(29)	(122)	77	(46)
Comprehensive loss	$ (1,211)	$ (289)	$ (3,497)	$ (5,349)

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018
Operating activities
Net loss	$ (3,574)	$ (5,303)
Adjustments to reconcile the net loss to net cash and cash equivalents generated by (used in) operating activities:
Depreciation and amortization	1,920	2,557
Net amortization of investment premiums and discounts	(34)	(42)
Equity-based compensation	1,509	1,602
Straight-line rent adjustment and amortization of lease incentives	(158)	(67)
Change in the fair value of acquisition-related contingent consideration	7	8
Deferred income taxes	517
Loss on disposal of fixed assets	45	442
Changes in operating assets and liabilities	776	(3,531)
Total adjustments	4,582	969
Net cash and cash equivalents provided by (used in) operating activities	1,008	(4,334)
Investing activities
Purchases of investments	(10,150)	(17,743)
Proceeds from sales and maturities of investments	14,961	15,978
Purchases of leasehold improvements and equipment	(1,398)	(1,375)
Net cash and cash equivalents provided by (used in) investing activities	3,413	(3,140)
Financing activities
Net proceeds from issuance of common stock	1,021	2,118
Common stock repurchases	(42)
Taxes paid related to net share settlement	(268)	(814)
Payment of acquisition-related contingent consideration	(230)
Net cash and cash equivalents provided by financing activities	481	1,304
Effect of exchange rate changes on cash and cash equivalents		(40)
Net increase (decrease) in cash, cash equivalents and restricted cash	4,902	(6,210)
Cash, cash equivalents and restricted cash at beginning of period	19,884	20,941
Cash, cash equivalents and restricted cash at end of period	$ 24,786	$ 14,731

Description of Business and Bas

Description of Business and Basis of Presentation	6 Months Ended
	Jun. 29, 2019
Accounting Policies [Abstract]
Description of Business and Basis of Presentation	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: 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 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 Pronouncement	6 Months Ended
	Jun. 29, 2019
New Accounting Pronouncements And Changes In Accounting Principles [Abstract]
Recent Accounting Pronouncement	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 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, 2018 Adjustments Due to ASC 842 Balance at December 30, 2018 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	6 Months Ended
	Jun. 29, 2019
Revenue From Contract With Customer [Abstract]
Revenue	3. Revenue The following tables represent a disaggregation of revenue from contracts with customers for the three and six months ended June 29 30 Major Products and Service Lines TFE Three Months Ended June 29, 2019 Three Months Ended June 30, 2018 (In thousands) HDD DCP PV Total HDD DCP PV Total Systems, upgrades and spare parts $ 12,423 $ — $ 18 $ 12,441 $ 19,221 $ — $ 1 $ 19,222 Field service 821 2 — 823 1,625 — 1 1,626 Total TFE net revenues $ 13,244 $ 2 $ 18 $ 13,264 $ 20,846 $ — $ 2 $ 20,848 Six Months Ended June 29, 2019 Six Months Ended June 30, 2018 (In thousands) HDD DCP PV Total HDD DCP PV Total Systems, upgrades and spare parts $ 23,473 $ — $ 6,391 $ 29,864 $ 29,614 $ 1 $ 3 $ 29,618 Field service 2,343 2 — 2,345 3,980 — 39 4,019 Total TFE net revenues $ 25,816 $ 2 $ 6,391 $ 32,209 $ 33,594 $ 1 $ 42 $ 33,637 Three Months Ended Six Months Ended Photonics June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 (In thousands) Products: Military products $ 2,981 $ 2,145 $ 4,794 $ 4,399 Commercial products 182 54 500 54 Repair and other services 810 288 1,371 717 Total Photonics product net revenues 3,973 2,487 6,665 5,170 Technology development: Cost Plus Fixed Fee (“CPFF”) 1,992 2,220 3,488 4,010 Firm Fixed Price (“FFP”) 3,085 540 4,777 1,232 Time and materials — 3 2 23 Total technology development net revenues 5,077 2,763 8,267 5,265 Total Photonics net revenues $ 9,050 $ 5,250 $ 14,932 $ 10,435 Primary Geographical Markets Three Months Ended Three Months Ended June 29, 2019 June 30, 2018 (In thousands) TFE Photonics Total TFE Photonics Total United States $ 356 $ 8,811 $ 9,167 $ 1,351 $ 4,998 $ 6,349 Asia 12,908 — 12,908 19,497 31 19,528 Europe — 239 239 — 187 187 Rest of World — — — — 34 34 Total net revenues $ 13,264 $ 9,050 $ 22,314 $ 20,848 $ 5,250 $ 26,098 Six Months Ended Six Months Ended June 29, 2019 June 30, 2018 (In thousands) TFE Photonics Total TFE Photonics Total United States $ 517 $ 14,527 $ 15,044 $ 3,262 $ 9,760 $ 13,022 Asia 31,692 — 31,692 30,375 31 30,406 Europe — 405 405 — 480 480 Rest of World — — — — 164 164 Total net revenues $ 32,209 $ 14,932 $ 47,141 $ 33,637 $ 10,435 $ 44,072 Timing of Revenue Recognition Three Months Ended Three Months Ended June 29, 2019 June 30, 2018 (In thousands) TFE Photonics Total TFE Photonics Total Products transferred at a point in time $ 13,264 $ 810 $ 14,074 $ 20,848 $ 288 $ 21,136 Products and services transferred over time — 8,240 8,240 — 4,962 4,962 $ 13,264 $ 9,050 $ 22,314 $ 20,848 $ 5,250 $ 26,098 Six Months Ended Six Months Ended June 29, 2019 June 30, 2018 (In thousands) TFE Photonics Total TFE Photonics Total Products transferred at a point in time $ 32,209 $ 1,371 $ 33,580 $ 33,637 $ 717 $ 34,354 Products and services transferred over time — 13,561 13,561 — 9,718 9,718 $ 32,209 $ 14,932 $ 47,141 $ 33,637 $ 10,435 $ 44,072 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 six months ended June 29 June 29, 2019 December 29, 2018 Six Months Change (In thousands) TFE: Contract assets: Accounts receivable, unbilled $ 564 $ 514 $ 50 Contract liabilities: Deferred revenue $ 1,163 $ 633 $ 530 Customer advances 7,916 14,314 (6,398 ) $ 9,079 $ 14,947 $ (5,868 ) Photonics: Contract assets: Accounts receivable, unbilled $ 3,085 $ 1,493 $ 1,592 Retainage 81 157 (76 ) $ 3,166 $ 1,650 $ 1,516 Contract liabilities: Deferred revenue $ 528 $ 1,101 $ (573 ) 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 six months ended June 29 29 29 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 of disregarding 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 six months ended June 29 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 six months ended June 29 Deferred revenue in our Photonics segment includes $528,000 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 six months ended June 29 On June 29 29

Inventories

Inventories	6 Months Ended
	Jun. 29, 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: June 29, 2019 December 29, 2018 (In thousands) Raw materials $ 18,062 $ 16,354 Work-in-progress 8,681 9,134 Finished goods 5,847 5,109 $ 32,590 $ 30,597 Finished goods inventory at June 29 29

Equity-Based Compensation

Equity-Based Compensation	6 Months Ended
	Jun. 29, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Equity-Based Compensation	5. Equity-Based Compensation At June 29 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. Equity-based Compensation Expense The effect of recording equity-based compensation for the three and six months ended June Three Months Ended Six Months Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 (In thousands) Equity-based compensation by type of award: Stock options $ 191 $ 216 $ 398 $ 350 RSUs 352 230 642 636 Employee stock purchase plan 210 339 469 616 Total equity-based compensation $ 753 $ 785 $ 1,509 $ 1,602 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. Intevac accounts for forfeitures as they occur, rather than estimating expected forfeitures. Option activity as of June 29, 2019 and changes during the six months ended June 29, 2019 were as follows: Shares Weighted-Average Exercise Price Options outstanding at December 29, 2018 2,070,749 $ 6.76 Options granted 340,750 $ 5.44 Options cancelled and forfeited (127,918 ) $ 7.54 Options exercised (72,122 ) $ 4.22 Options outstanding at June 29, 2019 2,211,459 $ 6.59 Options exercisable at June 29, 2019 1,390,622 $ 6.68 Intevac issued 181,431 shares under the ESPP during the six months ended June 29, 2019. Intevac estimated the weighted-average fair value of stock options and ESPP purchase rights using the following weighted-average assumptions: Three Months Ended Six Months Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 Stock Options: Weighted-average fair value of grants per share $ 2.05 $ 1.87 $ 2.06 $ 1.99 Expected volatility 43.19 % 44.50 % 43.20 % 43.80 % Risk free interest rate 1.86 % 2.58 % 1.88 % 2.58 % Expected term of options (in years) 4.6 4.5 4.6 4.5 Dividend yield None None None None Six Months Ended June 29, 2019 June 30, 2018 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. Performance stock options (“PSOs”) vest upon the achievement of certain market conditions (our stock performance) during a set performance period (typically 4 years) subject to the grantee’s continued service with Intevac through the date the applicable market condition is achieved. The fair value is based on the values calculated under the Monte Carlo simulation model on the grant date. Compensation cost is not adjusted in future periods for subsequent changes in the expected outcome of market related conditions. The compensation expense is recognized over the derived service period. We granted 37,500 of such stock options to the chief executive officer in the three and six months ended June 29 Intevac estimated the weighted-average fair value of PSO’s using the following weighted-average assumptions: Three Months Ended June 29, 2019 Weighted-average fair value of grants per share $ 1.75 Expected volatility 43.43 % Risk free interest rate 1.96 % Expected term (in years) 4.60 Dividend yield None RSUs RSU activity as of June 29, 2019 and changes during the six months ended June 29, 2019 were as follows Shares Weighted-Average Grant Date Fair Value Non-vested RSUs at December 29, 2018 462,409 $ 6.92 Granted 250,078 $ 5.64 Vested (117,802 ) $ 7.32 Cancelled and forfeited (11,391 ) $ 6.59 Non-vested RSUs at June 29, 2019 583,294 $ 6.30 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

Purchased Intangible Assets	6 Months Ended
	Jun. 29, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Purchased Intangible Assets	6. Purchased Intangible Assets Details of finite-lived intangible assets by segment as of June 29 June 29, 2019 Gross Carrying Amount Accumulated Amortization Net Carrying Amount (In thousands) TFE $ 7,172 $ (6,648 ) $ 524 Photonics 1,215 (1,158 ) 57 $ 8,387 $ (7,806 ) $ 581 Total amortization expense of finite-lived intangibles for the three and six months ended June 29 As of June 29 (In thousands) 2019 $ 307 2020 274 $ 581

Acquisition-Related Contingent

Acquisition-Related Contingent Consideration	6 Months Ended
	Jun. 29, 2019
Business Combinations [Abstract]
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 The fair value measurement of contingent consideration is based on significant inputs not observable in the market and thus represents a Level for the three and six months ended June 29, 2019 and June 30, 2018 Three Months Ended Six Months Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 (In thousands) Opening balance $ 132 $ 361 $ 223 $ 362 Changes in fair value — 9 7 8 Cash payments made (132 ) — (230 ) — Closing balance $ — $ 370 $ — $ 370 The contingent consideration liability of $223,000 at December 29, 2018

Warranty

Warranty	6 Months Ended
	Jun. 29, 2019
Guarantees [Abstract]
Warranty	8. Warranty For 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 and six months ended June Three Months Ended Six Months Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 (In thousands) Opening balance $ 1,297 $ 866 $ 997 $ 994 Expenditures incurred under warranties (257 ) (182 ) (424 ) (418 ) Accruals for product warranties issued during the reporting period 78 174 402 278 Adjustments to previously existing warranty accruals (170 ) 53 (27 ) 57 Closing balance $ 948 $ 911 $ 948 $ 911 The following table displays the balance sheet classification of the warranty provision account at June 29, 2019 and at December 29, 2018. June 29, 2019 December 29, 2018 (In thousands) Other accrued liabilities $ 782 $ 839 Other long-term liabilities 166 158 Total warranty provision $ 948 $ 997

Guarantees

Guarantees	6 Months Ended
	Jun. 29, 2019
Guarantees [Abstract]
Guarantees	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 June 29, 2019

Leases

Leases	6 Months Ended
	Jun. 29, 2019
Leases [Abstract]
Leases	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 June 29, 30 June 29, 2019 December 30, 2018 (In thousands) Assets: Operating lease right-of-use assets $ 10,503 $ 11,635 Liabilities: Current operating lease liabilities $ 2,486 $ 2,581 Noncurrent operating lease liabilities 9,925 11,120 $ 12,411 $ 13,701 Lease Costs: The components of lease costs were as follows: Three Months Ended Six Months Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 (In thousands) Operating lease cost $ 782 $ 756 $ 1,564 $ 1,515 Short-term lease cost 19 21 38 42 Total lease cost $ 801 $ 777 $ 1,602 $ 1,557 As of June (In thousands) 2019 $ 1,687 2020 2,993 2021 2,989 2022 3,074 2023 3,161 2024 529 Total lease payments 14,433 Less: Interest 2,022 Present value of lease liabilities $ 12,411 Lease Term and Discount Rate: June 29, 2019 Weighted-average remaining lease term (in years) 4.6 Weighted-average discount rate 6.50 % Other information: Supplemental cash flow information related to leases was as follows: Six Months Ended June 29, 2019 Operating cash outflows from operating leases $ 1,760 Right-of-use assets obtained in exchange for new operating lease liabilities $ —

Cash, Cash Equivalents and Inve

Cash, Cash Equivalents and Investments	6 Months Ended
	Jun. 29, 2019
Investments All Other Investments [Abstract]
Cash, Cash Equivalents and Investments	11. Cash, Cash Equivalents and Investments Cash and cash equivalents, short-term investments and long-term investments consist of: June 29, 2019 Amortized Cost Unrealized Holding Gains Unrealized Holding Losses Fair Value (In thousands) Cash and cash equivalents: Cash $ 13,034 $ — $ — $ 13,034 Money market funds 8,186 — — 8,186 U.S. treasury and agency securities 2,310 1 — 2,311 Total cash and cash equivalents $ 23,530 $ 1 $ — $ 23,531 Short-term investments: Certificates of deposit $ 2,000 $ 4 $ — $ 2,004 Commercial paper 2,029 3 — 2,032 Corporate bonds and medium-term notes 6,676 26 1 6,701 Municipal bonds 500 — — 500 U.S. treasury and agency securities 2,074 1 1 2,074 Total short-term investments $ 13,279 $ 34 $ 2 $ 13,311 Long-term investments: Certificates of deposit $ 500 $ — $ — $ 500 Corporate bonds and medium-term notes 1,920 17 — 1,937 Total long-term investments $ 2,420 $ 17 $ — $ 2,437 Total cash, cash equivalents, and investments $ 39,229 $ 52 $ 2 $ 39,279 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 June 29 Amortized Cost Fair Value (In thousands) Due in one year or less $ 23,775 $ 23,808 Due after one through five years 2,420 2,437 $ 26,195 $ 26,245 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 June June 29, 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 $ — $ — $ 499 $ 1 U.S. treasury and agency securities — — 999 1 $ — $ — $ 1,498 $ 2 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 June Fair Value Measurements at June 29, 2019 Total Level 1 Level 2 (In thousands) Recurring fair value measurements: Available-for-sale securities Money market funds $ 8,186 $ 8,186 $ — U.S. treasury and agency securities 4,385 4,385 — Certificates of deposit 2,504 — 2,504 Commercial paper 2,032 — 2,032 Corporate bonds and medium-term notes 8,638 — 8,638 Municipal bonds 500 — 500 Total recurring fair value measurements $ 26,245 $ 12,571 $ 13,674

Derivative Instruments

Derivative Instruments	6 Months Ended
	Jun. 29, 2019
Derivative Instrument Detail [Abstract]
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 June 29, 2019 and December 29, 2018. Notional Amounts Derivative Liabilities Derivative Instrument June 29, 2019 December 29, 2018 June 29, 2019 December 29, 2018 Balance Sheet Line Fair Value Balance Sheet Line Fair Value (In thousands) Undesignated Hedges: Forward Foreign Currency Contracts $ 890 $ 1,764 * $ 3 * $ 8 Total Hedges $ 890 $ 1,764 $ 3 $ 8 * Other accrued liabilities

Equity

Equity	6 Months Ended
	Jun. 29, 2019
Equity [Abstract]
Equity	13. Equity 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 June 29, 2019 June 29, 2019 Three Months Ended Six Months Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 (In thousands, except per share amounts) Shares of common stock repurchased 9 — 9 — Cost of stock repurchased $ 42 $ — $ 42 $ — Average price paid per share $ 4.69 $ — $ 4.69 $ — 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. Condensed Consolidated Statement of Changes in Equity The changes in stockholders’ equity June 29, 2019 (in thousands): Three Months Ended June 29, 2019 Common Stock and Additional Paid-in Capital Treasury Stock Accumulated Other Comprehensive Income Accumulated Deficit Total Stockholders’ Equity Balance at March 30, 2019 $ 184,976 $ (29,047 ) $ 484 $ (67,326 ) $ 89,087 Shares withheld for net share settlement of RSUs (240 ) — — — (240 ) Equity-based compensation expense 753 — — — 753 Net loss — — — (1,182 ) (1,182 ) Other comprehensive loss — — (29 ) — (29 ) Common stock repurchases — (42 ) — — (42 ) Balance at June 29, 2019 $ 185,489 $ (29,089 ) $ 455 $ (68,508 ) $ 88,347 Six Months Ended June 29, 2019 Common Stock and Additional Paid-in Capital Treasury Stock Accumulated Other Comprehensive Income Accumulated Deficit Total Stockholders’ Equity Balance at December 29, 2018 $ 183,227 $ (29,047 ) $ 378 $ (64,934 ) $ 89,624 Common stock issued under employee plans 1,021 — — — 1,021 Shares withheld for net share settlement of RSUs (268 ) — — — (268 ) Equity-based compensation expense 1,509 — — — 1,509 Net loss — — — (3,574 ) (3,574 ) Other comprehensive income — — 77 — 77 Common stock repurchases — (42 ) — — (42 ) Balance at June 29, 2019 $ 185,489 $ (29,089 ) $ 455 $ (68,508 ) $ 88,347 Three Months Ended June 30, 2018 Common Stock and Additional Paid-in Capital Treasury Stock Accumulated Other Comprehensive Income Accumulated Deficit Total Stockholders’ Equity Balance at March 31, 2018 $ 180,092 $ (28,489 ) $ 566 $ (73,651 ) $ 78,518 Common stock issued under employee plans 53 — — — 53 Shares withheld for net share settlement of RSUs (481 ) — — — (481 ) Equity-based compensation expense 785 — — — 785 Net loss — — — (167 ) (167 ) Other comprehensive loss — — (122 ) — (122 ) Balance at June 30, 2018 $ 180,449 $ (28,489 ) $ 444 $ (73,818 ) $ 78,586 Six Months Ended June 30, 2018 Common Stock and Additional Paid-in Capital Treasury Stock Accumulated Other Comprehensive Income Accumulated Deficit Total Stockholders’ 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 2,118 — — — 2,118 Shares withheld for net share settlement of RSUs (814 ) — — — (814 ) Equity-based compensation expense 1,602 — — — 1,602 Net loss — — — (5,303 ) (5,303 ) Other comprehensive loss — — (46 ) — (46 ) Balance at June 30, 2018 $ 180,449 $ (28,489 ) $ 444 $ (73,818 ) $ 78,586 Accumulated Other Comprehensive Income The changes in accumulated other comprehensive income June 29, 2019 Three Months Ended Six Months Ended June 29, 2019 Foreign currency Unrealized holding gains (losses) on available- for-sale investments Total Foreign currency Unrealized holding losses on available- for-sale investments Total (In thousands) Beginning balance $ 466 $ 18 $ 484 $ 405 $ (27 ) $ 378 Other comprehensive income (loss) before reclassification (61 ) 32 (29 ) — 77 77 Amounts reclassified from other comprehensive income — — — — — — Net current-period other comprehensive income (loss) (61 ) 32 (29 ) — 77 77 Ending balance $ 405 $ 50 $ 455 $ 405 $ 50 $ 455 Three Months Ended Six Months Ended June 30, 2018 Foreign currency Unrealized holding losses on available- for-sale investments Total Foreign currency Unrealized holding losses on available- for-sale investments Total (In thousands) Beginning balance $ 639 $ (73 ) $ 566 $ 535 $ (45 ) $ 490 Other comprehensive income (loss) before reclassification (144 ) 22 (122 ) (40 ) (6 ) (46 ) Amounts reclassified from other comprehensive income — — — — — — Net current-period other comprehensive income (loss) (144 ) 22 (122 ) (40 ) (6 ) (46 ) Ending balance $ 495 $ (51 ) $ 444 $ 495 $ (51 ) $ 444

Net Loss Per Share

Net Loss Per Share	6 Months Ended
	Jun. 29, 2019
Earnings Per Share [Abstract]
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 Six Months Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 (In thousands, except per share amounts) Net loss $ (1,182 ) $ (167 ) $ (3,574 ) $ (5,303 ) Weighted-average shares – basic 22,991 22,461 22,923 22,284 Effect of dilutive potential common shares — — — — Weighted-average shares – diluted 22,991 22,461 22,923 22,284 Net loss per share – basic $ (0.05 ) $ (0.01 ) $ (0.16 ) $ (0.24 ) Net loss per share –diluted $ (0.05 ) $ (0.01 ) $ (0.16 ) $ (0.24 ) As the Company is in a net loss position, all of the Company’s equity instruments are considered antidilutive.

Segment Reporting

Segment Reporting	6 Months Ended
	Jun. 29, 2019
Segment Reporting [Abstract]
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 June 29, 2019 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 and six months ended June 29, 2019 and June 30, 2018 is as follows: Net Revenues Three Months Ended Six Months Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 (In thousands) TFE $ 13,264 $ 20,848 $ 32,209 $ 33,637 Photonics 9,050 5,250 14,932 10,435 Total segment net revenues $ 22,314 $ 26,098 $ 47,141 $ 44,072 Operating Income (Loss) Three Months Ended Six Months Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 (In thousands) TFE $ (1,291 ) $ 1,220 $ (1,892 ) $ (1,289 ) Photonics 1,487 (444 ) 846 (1,654 ) Total income (loss) from segment operations 196 776 (1,046 ) (2,943 ) Unallocated costs (1,124 ) (711 ) (1,879 ) (2,113 ) Income (loss) from operations (928 ) 65 (2,925 ) (5,056 ) Interest income and other income (expense), net 163 133 322 278 Income (loss) before income taxes $ (765 ) $ 198 $ (2,603 ) $ (4,778 ) Total assets for each reportable segment as of June , 2019 December 29, 2018 Assets June 29, 2019 December 29, 2018 (In thousands) TFE $ 51,137 $ 53,867 Photonics 19,435 16,721 Total segment assets 70,572 70,588 Cash, cash equivalents and investments 39,279 39,163 Restricted cash 1,255 1,169 Deferred income taxes 7,396 7,913 Other current assets 1,223 1,341 Common property, plant and equipment 1,171 1,017 Common operating lease right-of-use assets 2,094 — Other assets 889 879 Consolidated total assets $ 123,879 $ 122,070

Income Taxes

Income Taxes	6 Months Ended
	Jun. 29, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Intevac recorded income tax provisions of $417,000 and $971,000 for the three and six months ended June 29, 2019, respectively and $365,000 and $525,000 for the three and six months ended June 30, 2018, respectively. The income tax provisions for the three and six months 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 and six month periods ended June 29, 2019 Intevac recorded income tax provisions on earnings of its international subsidiaries of $201,000 and $563,000, respectively and recorded $213,000 and $404,000, respectively for withholding taxes on royalties paid to the United States from Intevac’s Singapore subsidiary as discrete items. For the three and six month periods ended June 30, 2018 Intevac recorded $312,000 and $457,000, respectively for withholding taxes on royalties paid to the United States from Intevac’s Singapore subsidiary as discrete items. 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 the 2009 and 2010 fiscal year tax returns of the Company’s wholly-owned subsidiary, Intevac Asia Pte. Ltd. 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 $732,000 at June 29, 2019 December 29, 2018

Restructuring Charges

Restructuring Charges	6 Months Ended
	Jun. 29, 2019
Restructuring And Related Activities [Abstract]
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 Six Months Ended June 30, 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	6 Months Ended
	Jun. 29, 2019
Related Party Transactions [Abstract]
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 $24,000 and $175,000, respectively, for the three and six months ended June 29, 2019 and $42,000 and $123,000, respectively, for the three and six months ended June 30, 2018 from this supplier.

Contingencies

Contingencies	6 Months Ended
	Jun. 29, 2019
Commitments And Contingencies Disclosure [Abstract]
Contingencies	19. 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 Pronouncement (Tables)	6 Months Ended
	Jun. 29, 2019
New Accounting Pronouncements And Changes In Accounting Principles [Abstract]
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, 2018 Adjustments Due to ASC 842 Balance at December 30, 2018 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)	6 Months Ended
	Jun. 29, 2019
Revenue From Contract With Customer [Abstract]
Disaggregation of Revenue from Contracts with Customers	The following tables represent a disaggregation of revenue from contracts with customers for the three and six months ended June 29 30 Major Products and Service Lines TFE Three Months Ended June 29, 2019 Three Months Ended June 30, 2018 (In thousands) HDD DCP PV Total HDD DCP PV Total Systems, upgrades and spare parts $ 12,423 $ — $ 18 $ 12,441 $ 19,221 $ — $ 1 $ 19,222 Field service 821 2 — 823 1,625 — 1 1,626 Total TFE net revenues $ 13,244 $ 2 $ 18 $ 13,264 $ 20,846 $ — $ 2 $ 20,848 Six Months Ended June 29, 2019 Six Months Ended June 30, 2018 (In thousands) HDD DCP PV Total HDD DCP PV Total Systems, upgrades and spare parts $ 23,473 $ — $ 6,391 $ 29,864 $ 29,614 $ 1 $ 3 $ 29,618 Field service 2,343 2 — 2,345 3,980 — 39 4,019 Total TFE net revenues $ 25,816 $ 2 $ 6,391 $ 32,209 $ 33,594 $ 1 $ 42 $ 33,637 Three Months Ended Six Months Ended Photonics June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 (In thousands) Products: Military products $ 2,981 $ 2,145 $ 4,794 $ 4,399 Commercial products 182 54 500 54 Repair and other services 810 288 1,371 717 Total Photonics product net revenues 3,973 2,487 6,665 5,170 Technology development: Cost Plus Fixed Fee (“CPFF”) 1,992 2,220 3,488 4,010 Firm Fixed Price (“FFP”) 3,085 540 4,777 1,232 Time and materials — 3 2 23 Total technology development net revenues 5,077 2,763 8,267 5,265 Total Photonics net revenues $ 9,050 $ 5,250 $ 14,932 $ 10,435 Primary Geographical Markets Three Months Ended Three Months Ended June 29, 2019 June 30, 2018 (In thousands) TFE Photonics Total TFE Photonics Total United States $ 356 $ 8,811 $ 9,167 $ 1,351 $ 4,998 $ 6,349 Asia 12,908 — 12,908 19,497 31 19,528 Europe — 239 239 — 187 187 Rest of World — — — — 34 34 Total net revenues $ 13,264 $ 9,050 $ 22,314 $ 20,848 $ 5,250 $ 26,098 Six Months Ended Six Months Ended June 29, 2019 June 30, 2018 (In thousands) TFE Photonics Total TFE Photonics Total United States $ 517 $ 14,527 $ 15,044 $ 3,262 $ 9,760 $ 13,022 Asia 31,692 — 31,692 30,375 31 30,406 Europe — 405 405 — 480 480 Rest of World — — — — 164 164 Total net revenues $ 32,209 $ 14,932 $ 47,141 $ 33,637 $ 10,435 $ 44,072 Timing of Revenue Recognition Three Months Ended Three Months Ended June 29, 2019 June 30, 2018 (In thousands) TFE Photonics Total TFE Photonics Total Products transferred at a point in time $ 13,264 $ 810 $ 14,074 $ 20,848 $ 288 $ 21,136 Products and services transferred over time — 8,240 8,240 — 4,962 4,962 $ 13,264 $ 9,050 $ 22,314 $ 20,848 $ 5,250 $ 26,098 Six Months Ended Six Months Ended June 29, 2019 June 30, 2018 (In thousands) TFE Photonics Total TFE Photonics Total Products transferred at a point in time $ 32,209 $ 1,371 $ 33,580 $ 33,637 $ 717 $ 34,354 Products and services transferred over time — 13,561 13,561 — 9,718 9,718 $ 32,209 $ 14,932 $ 47,141 $ 33,637 $ 10,435 $ 44,072
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 six months ended June 29 June 29, 2019 December 29, 2018 Six Months Change (In thousands) TFE: Contract assets: Accounts receivable, unbilled $ 564 $ 514 $ 50 Contract liabilities: Deferred revenue $ 1,163 $ 633 $ 530 Customer advances 7,916 14,314 (6,398 ) $ 9,079 $ 14,947 $ (5,868 ) Photonics: Contract assets: Accounts receivable, unbilled $ 3,085 $ 1,493 $ 1,592 Retainage 81 157 (76 ) $ 3,166 $ 1,650 $ 1,516 Contract liabilities: Deferred revenue $ 528 $ 1,101 $ (573 )

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 29, 2019
Inventory Disclosure [Abstract]
Summary of Inventories	Inventories are stated at the lower of average cost or net realizable value and consist of the following: June 29, 2019 December 29, 2018 (In thousands) Raw materials $ 18,062 $ 16,354 Work-in-progress 8,681 9,134 Finished goods 5,847 5,109 $ 32,590 $ 30,597

Equity-Based Compensation (Tabl

Equity-Based Compensation (Tables)	6 Months Ended
	Jun. 29, 2019
Effect of Recording Equity-Based Compensation	The effect of recording equity-based compensation for the three and six months ended June Three Months Ended Six Months Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 (In thousands) Equity-based compensation by type of award: Stock options $ 191 $ 216 $ 398 $ 350 RSUs 352 230 642 636 Employee stock purchase plan 210 339 469 616 Total equity-based compensation $ 753 $ 785 $ 1,509 $ 1,602
Summary of Stock Option Activity	Option activity as of June 29, 2019 and changes during the six months ended June 29, 2019 were as follows: Shares Weighted-Average Exercise Price Options outstanding at December 29, 2018 2,070,749 $ 6.76 Options granted 340,750 $ 5.44 Options cancelled and forfeited (127,918 ) $ 7.54 Options exercised (72,122 ) $ 4.22 Options outstanding at June 29, 2019 2,211,459 $ 6.59 Options exercisable at June 29, 2019 1,390,622 $ 6.68
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 Six Months Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 Stock Options: Weighted-average fair value of grants per share $ 2.05 $ 1.87 $ 2.06 $ 1.99 Expected volatility 43.19 % 44.50 % 43.20 % 43.80 % Risk free interest rate 1.86 % 2.58 % 1.88 % 2.58 % Expected term of options (in years) 4.6 4.5 4.6 4.5 Dividend yield None None None None Six Months Ended June 29, 2019 June 30, 2018 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	RSU activity as of June 29, 2019 and changes during the six months ended June 29, 2019 were as follows Shares Weighted-Average Grant Date Fair Value Non-vested RSUs at December 29, 2018 462,409 $ 6.92 Granted 250,078 $ 5.64 Vested (117,802 ) $ 7.32 Cancelled and forfeited (11,391 ) $ 6.59 Non-vested RSUs at June 29, 2019 583,294 $ 6.30
Performance Stock Options (PSO's)
Employee Stock Options Weighted-Average Assumptions	Intevac estimated the weighted-average fair value of PSO’s using the following weighted-average assumptions: Three Months Ended June 29, 2019 Weighted-average fair value of grants per share $ 1.75 Expected volatility 43.43 % Risk free interest rate 1.96 % Expected term (in years) 4.60 Dividend yield None

Purchased Intangible Assets (Ta

Purchased Intangible Assets (Tables)	6 Months Ended
	Jun. 29, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Information Regarding Other Acquisition Related Intangible Assets	Details of finite-lived intangible assets by segment as of June 29 June 29, 2019 Gross Carrying Amount Accumulated Amortization Net Carrying Amount (In thousands) TFE $ 7,172 $ (6,648 ) $ 524 Photonics 1,215 (1,158 ) 57 $ 8,387 $ (7,806 ) $ 581
Estimated Future Amortization Expense Related to Finite-Lived Purchased Intangible Assets	As of June 29 (In thousands) 2019 $ 307 2020 274 $ 581

Acquisition-Related Contingen_2

Acquisition-Related Contingent Consideration (Tables)	6 Months Ended
	Jun. 29, 2019
Business Combinations [Abstract]
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 and six months ended June 29, 2019 and June 30, 2018 Three Months Ended Six Months Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 (In thousands) Opening balance $ 132 $ 361 $ 223 $ 362 Changes in fair value — 9 7 8 Cash payments made (132 ) — (230 ) — Closing balance $ — $ 370 $ — $ 370

Warranty (Tables)

Warranty (Tables)	6 Months Ended
	Jun. 29, 2019
Guarantees [Abstract]
Schedule of Product Warranty Liability	The following table displays the activity in the warranty provision account for the three and six months ended June Three Months Ended Six Months Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 (In thousands) Opening balance $ 1,297 $ 866 $ 997 $ 994 Expenditures incurred under warranties (257 ) (182 ) (424 ) (418 ) Accruals for product warranties issued during the reporting period 78 174 402 278 Adjustments to previously existing warranty accruals (170 ) 53 (27 ) 57 Closing balance $ 948 $ 911 $ 948 $ 911 The following table displays the balance sheet classification of the warranty provision account at June 29, 2019 and at December 29, 2018. June 29, 2019 December 29, 2018 (In thousands) Other accrued liabilities $ 782 $ 839 Other long-term liabilities 166 158 Total warranty provision $ 948 $ 997

Leases (Table)

Leases (Table)	6 Months Ended
	Jun. 29, 2019
Leases [Abstract]
Schedule of Lease Assets and Lease Liabilities	The following table reflects our lease assets and our lease liabilities at June 29, 30 June 29, 2019 December 30, 2018 (In thousands) Assets: Operating lease right-of-use assets $ 10,503 $ 11,635 Liabilities: Current operating lease liabilities $ 2,486 $ 2,581 Noncurrent operating lease liabilities 9,925 11,120 $ 12,411 $ 13,701
Lease Costs	The components of lease costs were as follows: Three Months Ended Six Months Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 (In thousands) Operating lease cost $ 782 $ 756 $ 1,564 $ 1,515 Short-term lease cost 19 21 38 42 Total lease cost $ 801 $ 777 $ 1,602 $ 1,557
Schedule of Maturity of Operating Lease Liabilities	As of June (In thousands) 2019 $ 1,687 2020 2,993 2021 2,989 2022 3,074 2023 3,161 2024 529 Total lease payments 14,433 Less: Interest 2,022 Present value of lease liabilities $ 12,411
Schedule of Lease Term and Discount Rate	June 29, 2019 Weighted-average remaining lease term (in years) 4.6 Weighted-average discount rate 6.50 %
Schedule of Supplemental Cash Flow Information Related to Leases	Supplemental cash flow information related to leases was as follows: Six Months Ended June 29, 2019 Operating cash outflows from operating leases $ 1,760 Right-of-use assets obtained in exchange for new operating lease liabilities $ —

Cash, Cash Equivalents and In_2

Cash, Cash Equivalents and Investments (Tables)	6 Months Ended
	Jun. 29, 2019
Investments All Other Investments [Abstract]
Cash, Cash Equivalents and Short-Term Investments and Long-Term Investments	Cash and cash equivalents, short-term investments and long-term investments consist of: June 29, 2019 Amortized Cost Unrealized Holding Gains Unrealized Holding Losses Fair Value (In thousands) Cash and cash equivalents: Cash $ 13,034 $ — $ — $ 13,034 Money market funds 8,186 — — 8,186 U.S. treasury and agency securities 2,310 1 — 2,311 Total cash and cash equivalents $ 23,530 $ 1 $ — $ 23,531 Short-term investments: Certificates of deposit $ 2,000 $ 4 $ — $ 2,004 Commercial paper 2,029 3 — 2,032 Corporate bonds and medium-term notes 6,676 26 1 6,701 Municipal bonds 500 — — 500 U.S. treasury and agency securities 2,074 1 1 2,074 Total short-term investments $ 13,279 $ 34 $ 2 $ 13,311 Long-term investments: Certificates of deposit $ 500 $ — $ — $ 500 Corporate bonds and medium-term notes 1,920 17 — 1,937 Total long-term investments $ 2,420 $ 17 $ — $ 2,437 Total cash, cash equivalents, and investments $ 39,229 $ 52 $ 2 $ 39,279 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 June 29 Amortized Cost Fair Value (In thousands) Due in one year or less $ 23,775 $ 23,808 Due after one through five years 2,420 2,437 $ 26,195 $ 26,245
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 June June 29, 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 $ — $ — $ 499 $ 1 U.S. treasury and agency securities — — 999 1 $ — $ — $ 1,498 $ 2
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 June Fair Value Measurements at June 29, 2019 Total Level 1 Level 2 (In thousands) Recurring fair value measurements: Available-for-sale securities Money market funds $ 8,186 $ 8,186 $ — U.S. treasury and agency securities 4,385 4,385 — Certificates of deposit 2,504 — 2,504 Commercial paper 2,032 — 2,032 Corporate bonds and medium-term notes 8,638 — 8,638 Municipal bonds 500 — 500 Total recurring fair value measurements $ 26,245 $ 12,571 $ 13,674

Derivative Instruments (Tables)

Derivative Instruments (Tables)	6 Months Ended
	Jun. 29, 2019
Derivative Instrument Detail [Abstract]
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 June 29, 2019 and December 29, 2018. Notional Amounts Derivative Liabilities Derivative Instrument June 29, 2019 December 29, 2018 June 29, 2019 December 29, 2018 Balance Sheet Line Fair Value Balance Sheet Line Fair Value (In thousands) Undesignated Hedges: Forward Foreign Currency Contracts $ 890 $ 1,764 * $ 3 * $ 8 Total Hedges $ 890 $ 1,764 $ 3 $ 8 * Other accrued liabilities

Equity (Tables)

Equity (Tables)	6 Months Ended
	Jun. 29, 2019
Equity [Abstract]
Schedule of Stock Repurchases	Stock repurchases during the three and six months ended June 29, 2019 Three Months Ended Six Months Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 (In thousands, except per share amounts) Shares of common stock repurchased 9 — 9 — Cost of stock repurchased $ 42 $ — $ 42 $ — Average price paid per share $ 4.69 $ — $ 4.69 $ —
Schedule of Changes in Stockholders' Equity	The changes in stockholders’ equity June 29, 2019 (in thousands): Three Months Ended June 29, 2019 Common Stock and Additional Paid-in Capital Treasury Stock Accumulated Other Comprehensive Income Accumulated Deficit Total Stockholders’ Equity Balance at March 30, 2019 $ 184,976 $ (29,047 ) $ 484 $ (67,326 ) $ 89,087 Shares withheld for net share settlement of RSUs (240 ) — — — (240 ) Equity-based compensation expense 753 — — — 753 Net loss — — — (1,182 ) (1,182 ) Other comprehensive loss — — (29 ) — (29 ) Common stock repurchases — (42 ) — — (42 ) Balance at June 29, 2019 $ 185,489 $ (29,089 ) $ 455 $ (68,508 ) $ 88,347 Six Months Ended June 29, 2019 Common Stock and Additional Paid-in Capital Treasury Stock Accumulated Other Comprehensive Income Accumulated Deficit Total Stockholders’ Equity Balance at December 29, 2018 $ 183,227 $ (29,047 ) $ 378 $ (64,934 ) $ 89,624 Common stock issued under employee plans 1,021 — — — 1,021 Shares withheld for net share settlement of RSUs (268 ) — — — (268 ) Equity-based compensation expense 1,509 — — — 1,509 Net loss — — — (3,574 ) (3,574 ) Other comprehensive income — — 77 — 77 Common stock repurchases — (42 ) — — (42 ) Balance at June 29, 2019 $ 185,489 $ (29,089 ) $ 455 $ (68,508 ) $ 88,347 Three Months Ended June 30, 2018 Common Stock and Additional Paid-in Capital Treasury Stock Accumulated Other Comprehensive Income Accumulated Deficit Total Stockholders’ Equity Balance at March 31, 2018 $ 180,092 $ (28,489 ) $ 566 $ (73,651 ) $ 78,518 Common stock issued under employee plans 53 — — — 53 Shares withheld for net share settlement of RSUs (481 ) — — — (481 ) Equity-based compensation expense 785 — — — 785 Net loss — — — (167 ) (167 ) Other comprehensive loss — — (122 ) — (122 ) Balance at June 30, 2018 $ 180,449 $ (28,489 ) $ 444 $ (73,818 ) $ 78,586 Six Months Ended June 30, 2018 Common Stock and Additional Paid-in Capital Treasury Stock Accumulated Other Comprehensive Income Accumulated Deficit Total Stockholders’ 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 2,118 — — — 2,118 Shares withheld for net share settlement of RSUs (814 ) — — — (814 ) Equity-based compensation expense 1,602 — — — 1,602 Net loss — — — (5,303 ) (5,303 ) Other comprehensive loss — — (46 ) — (46 ) Balance at June 30, 2018 $ 180,449 $ (28,489 ) $ 444 $ (73,818 ) $ 78,586
Changes in Accumulated Other Comprehensive Income by Component	The changes in accumulated other comprehensive income June 29, 2019 Three Months Ended Six Months Ended June 29, 2019 Foreign currency Unrealized holding gains (losses) on available- for-sale investments Total Foreign currency Unrealized holding losses on available- for-sale investments Total (In thousands) Beginning balance $ 466 $ 18 $ 484 $ 405 $ (27 ) $ 378 Other comprehensive income (loss) before reclassification (61 ) 32 (29 ) — 77 77 Amounts reclassified from other comprehensive income — — — — — — Net current-period other comprehensive income (loss) (61 ) 32 (29 ) — 77 77 Ending balance $ 405 $ 50 $ 455 $ 405 $ 50 $ 455 Three Months Ended Six Months Ended June 30, 2018 Foreign currency Unrealized holding losses on available- for-sale investments Total Foreign currency Unrealized holding losses on available- for-sale investments Total (In thousands) Beginning balance $ 639 $ (73 ) $ 566 $ 535 $ (45 ) $ 490 Other comprehensive income (loss) before reclassification (144 ) 22 (122 ) (40 ) (6 ) (46 ) Amounts reclassified from other comprehensive income — — — — — — Net current-period other comprehensive income (loss) (144 ) 22 (122 ) (40 ) (6 ) (46 ) Ending balance $ 495 $ (51 ) $ 444 $ 495 $ (51 ) $ 444

Net Loss Per Share (Tables)

Net Loss Per Share (Tables)	6 Months Ended
	Jun. 29, 2019
Earnings Per Share [Abstract]
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 Six Months Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 (In thousands, except per share amounts) Net loss $ (1,182 ) $ (167 ) $ (3,574 ) $ (5,303 ) Weighted-average shares – basic 22,991 22,461 22,923 22,284 Effect of dilutive potential common shares — — — — Weighted-average shares – diluted 22,991 22,461 22,923 22,284 Net loss per share – basic $ (0.05 ) $ (0.01 ) $ (0.16 ) $ (0.24 ) Net loss per share –diluted $ (0.05 ) $ (0.01 ) $ (0.16 ) $ (0.24 )

Segment Reporting (Tables)

Segment Reporting (Tables)	6 Months Ended
	Jun. 29, 2019
Segment Reporting [Abstract]
Information for Each Reportable Segment	Information for each reportable segment for the three and six months ended June 29, 2019 and June 30, 2018 is as follows: Net Revenues Three Months Ended Six Months Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 (In thousands) TFE $ 13,264 $ 20,848 $ 32,209 $ 33,637 Photonics 9,050 5,250 14,932 10,435 Total segment net revenues $ 22,314 $ 26,098 $ 47,141 $ 44,072 Operating Income (Loss) Three Months Ended Six Months Ended June 29, 2019 June 30, 2018 June 29, 2019 June 30, 2018 (In thousands) TFE $ (1,291 ) $ 1,220 $ (1,892 ) $ (1,289 ) Photonics 1,487 (444 ) 846 (1,654 ) Total income (loss) from segment operations 196 776 (1,046 ) (2,943 ) Unallocated costs (1,124 ) (711 ) (1,879 ) (2,113 ) Income (loss) from operations (928 ) 65 (2,925 ) (5,056 ) Interest income and other income (expense), net 163 133 322 278 Income (loss) before income taxes $ (765 ) $ 198 $ (2,603 ) $ (4,778 )
Segment Assets	Total assets for each reportable segment as of June , 2019 December 29, 2018 Assets June 29, 2019 December 29, 2018 (In thousands) TFE $ 51,137 $ 53,867 Photonics 19,435 16,721 Total segment assets 70,572 70,588 Cash, cash equivalents and investments 39,279 39,163 Restricted cash 1,255 1,169 Deferred income taxes 7,396 7,913 Other current assets 1,223 1,341 Common property, plant and equipment 1,171 1,017 Common operating lease right-of-use assets 2,094 — Other assets 889 879 Consolidated total assets $ 123,879 $ 122,070

Restructuring Charges (Tables)

Restructuring Charges (Tables)	6 Months Ended
	Jun. 29, 2019
Restructuring And Related Activities [Abstract]
Changes in Restructuring Reserves	The changes in restructuring reserves associated with the Reduction Plan Six Months Ended June 30, 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 Pronouncement - Additional Information (Detail) - USD ($) $ in Thousands	Jun. 29, 2019	Dec. 30, 2018
New Accounting Pronouncements And Changes In Accounting Principles [Abstract]
Net lease assets	$ 10,503	$ 11,635
Lease liabilities	$ 12,411	$ 13,701

Recent Accounting Pronounceme_4

Recent Accounting Pronouncement - Effect of Changes in Balance Sheet Due to Adoption of New Revenue Standard (Detail) - USD ($) $ in Thousands	Jun. 29, 2019	Dec. 30, 2018	Dec. 29, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Prepaid expenses and other current assets	$ 1,997		$ 2,528
Total current assets	89,746		95,633
Operating lease right-of-use assets	10,503	$ 11,635
Total assets	123,879		122,070
Current operating lease liabilities	2,486	2,581
Accounts payable	5,708		6,053
Other accrued liabilities	4,100		4,952
Total current liabilities	25,431		30,008
Noncurrent operating lease liabilities	9,925	11,120
Other long-term liabilities	176		2,438
Total non-current liabilities	10,101		2,438
Total liabilities and stockholders' equity	$ 123,879		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
Accounting Standards Update 2016-02 | Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Prepaid expenses and other current assets			2,528
Total current assets			95,633
Total assets			122,070
Accounts payable			6,053
Other accrued liabilities			4,952
Total current liabilities			30,008
Other long-term liabilities			2,438
Total non-current liabilities			2,438
Total liabilities and stockholders' equity			$ 122,070
Accounting Standards Update 2016-02 | Restatement Adjustment
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 Rev

Revenue - Disaggregation of Revenue from Contracts with Customers (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Total net revenues	$ 22,314	$ 26,098	$ 47,141	$ 44,072
TFE
Disaggregation of Revenue [Line Items]
Total net revenues	13,264	20,848	32,209	33,637
TFE | Systems, Upgrades and Spare Parts
Disaggregation of Revenue [Line Items]
Total net revenues	12,441	19,222	29,864	29,618
TFE | Field Service
Disaggregation of Revenue [Line Items]
Total net revenues	823	1,626	2,345	4,019
Photonics
Disaggregation of Revenue [Line Items]
Total net revenues	9,050	5,250	14,932	10,435
HDD | TFE
Disaggregation of Revenue [Line Items]
Total net revenues	13,244	20,846	25,816	33,594
HDD | TFE | Systems, Upgrades and Spare Parts
Disaggregation of Revenue [Line Items]
Total net revenues	12,423	19,221	23,473	29,614
HDD | TFE | Field Service
Disaggregation of Revenue [Line Items]
Total net revenues	821	1,625	2,343	3,980
DCP | TFE
Disaggregation of Revenue [Line Items]
Total net revenues	2		2	1
DCP | TFE | Systems, Upgrades and Spare Parts
Disaggregation of Revenue [Line Items]
Total net revenues				1
DCP | TFE | Field Service
Disaggregation of Revenue [Line Items]
Total net revenues	2		2
PV | TFE
Disaggregation of Revenue [Line Items]
Total net revenues	18	2	6,391	42
PV | TFE | Systems, Upgrades and Spare Parts
Disaggregation of Revenue [Line Items]
Total net revenues	18	1	6,391	3
PV | TFE | Field Service
Disaggregation of Revenue [Line Items]
Total net revenues		1		39
Military Products | Photonics
Disaggregation of Revenue [Line Items]
Total net revenues	2,981	2,145	4,794	4,399
Commercial Products | Photonics
Disaggregation of Revenue [Line Items]
Total net revenues	182	54	500	54
Repair and Other Services | Photonics
Disaggregation of Revenue [Line Items]
Total net revenues	810	288	1,371	717
Product | Photonics
Disaggregation of Revenue [Line Items]
Total net revenues	3,973	2,487	6,665	5,170
CPFF | Photonics
Disaggregation of Revenue [Line Items]
Total net revenues	1,992	2,220	3,488	4,010
FFP | Photonics
Disaggregation of Revenue [Line Items]
Total net revenues	3,085	540	4,777	1,232
Times and Materials | Photonics
Disaggregation of Revenue [Line Items]
Total net revenues		3	2	23
Technology Development | Photonics
Disaggregation of Revenue [Line Items]
Total net revenues	$ 5,077	$ 2,763	$ 8,267	$ 5,265

Revenue - Primary Geography Mar

Revenue - Primary Geography Markets (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Total net revenues	$ 22,314	$ 26,098	$ 47,141	$ 44,072
Products Transferred at a Point in Time
Disaggregation of Revenue [Line Items]
Total net revenues	14,074	21,136	33,580	34,354
Products and Services Transferred Over Time
Disaggregation of Revenue [Line Items]
Total net revenues	8,240	4,962	13,561	9,718
United States
Disaggregation of Revenue [Line Items]
Total net revenues	9,167	6,349	15,044	13,022
Asia
Disaggregation of Revenue [Line Items]
Total net revenues	12,908	19,528	31,692	30,406
Europe
Disaggregation of Revenue [Line Items]
Total net revenues	239	187	405	480
Rest of World
Disaggregation of Revenue [Line Items]
Total net revenues		34		164
TFE
Disaggregation of Revenue [Line Items]
Total net revenues	13,264	20,848	32,209	33,637
TFE | Products Transferred at a Point in Time
Disaggregation of Revenue [Line Items]
Total net revenues	13,264	20,848	32,209	33,637
TFE | United States
Disaggregation of Revenue [Line Items]
Total net revenues	356	1,351	517	3,262
TFE | Asia
Disaggregation of Revenue [Line Items]
Total net revenues	12,908	19,497	31,692	30,375
Photonics
Disaggregation of Revenue [Line Items]
Total net revenues	9,050	5,250	14,932	10,435
Photonics | Products Transferred at a Point in Time
Disaggregation of Revenue [Line Items]
Total net revenues	810	288	1,371	717
Photonics | Products and Services Transferred Over Time
Disaggregation of Revenue [Line Items]
Total net revenues	8,240	4,962	13,561	9,718
Photonics | United States
Disaggregation of Revenue [Line Items]
Total net revenues	8,811	4,998	14,527	9,760
Photonics | Asia
Disaggregation of Revenue [Line Items]
Total net revenues		31		31
Photonics | Europe
Disaggregation of Revenue [Line Items]
Total net revenues	$ 239	187	$ 405	480
Photonics | Rest of World
Disaggregation of Revenue [Line Items]
Total net revenues		$ 34		$ 164

Revenue - Changes in Contract A

Revenue - Changes in Contract Assets and Contract Liabilities (Detail) - USD ($)	6 Months Ended
	Jun. 29, 2019	Dec. 29, 2018
TFE
Contract liabilities:
Contract liabilities	$ 9,079,000	$ 14,947,000
Change in contract liabilities	(5,868,000)
TFE | Accounts Receivable, Unbilled
Contract assets:
Contract assets	564,000	514,000
Change in contract assets	50,000
TFE | Deferred Revenue
Contract liabilities:
Contract liabilities	1,163,000	633,000
Change in contract liabilities	530,000
TFE | Customer Advances
Contract liabilities:
Contract liabilities	7,916,000	14,314,000
Change in contract liabilities	(6,398,000)
Photonics
Contract assets:
Contract assets	3,166,000	1,650,000
Change in contract assets	1,516,000
Photonics | Accounts Receivable, Unbilled
Contract assets:
Contract assets	3,085,000	1,493,000
Change in contract assets	1,592,000
Photonics | Deferred Revenue
Contract liabilities:
Contract liabilities	528,000	1,101,000
Change in contract liabilities	(573,000)
Photonics | Retainage
Contract assets:
Contract assets	81,000	$ 157,000
Change in contract assets	$ (76,000)

Revenue - Additional Informatio

Revenue - Additional Information (Detail)	6 Months Ended
	Jun. 29, 2019USD ($)Installment	Dec. 29, 2018USD ($)
Revenue From Contract With Customers [Line Items]
Revenue remaining performance obligation	$ 93,700,000
Revenue performance obligation, description of timing	We expect to recognize approximately 53% of our remaining performance obligations as revenue in 2019, and the balance in 2020
TFE
Revenue From Contract With Customers [Line Items]
Contract liabilities	$ 9,079,000	$ 14,947,000
Revenue remaining performance obligation	50,300,000
TFE | Customer Advances
Revenue From Contract With Customers [Line Items]
Contract with customer liability revenue recognized	9,800,000
Contract liabilities	7,916,000	14,314,000
TFE | Deferred Revenue
Revenue From Contract With Customers [Line Items]
Contract with customer liability revenue recognized	324,000
Contract liabilities	$ 1,163,000	633,000
TFE | Accounts Receivable, Unbilled
Revenue From Contract With Customers [Line Items]
Number of installments | Installment	3
Change in contract assets	$ 50,000
Photonics
Revenue From Contract With Customers [Line Items]
Change in contract assets	1,516,000
Revenue remaining performance obligation	43,400,000
Photonics | Deferred Revenue
Revenue From Contract With Customers [Line Items]
Contract with customer liability revenue recognized	573,000
Contract liabilities	528,000	$ 1,101,000
Photonics | Accounts Receivable, Unbilled
Revenue From Contract With Customers [Line Items]
Change in contract assets	$ 1,592,000

Revenue - Additional Informat_2

Revenue - Additional Information (Detail 1) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-06-30	Jun. 29, 2019
Revenue From Contract With Customers [Line Items]
Revenue, remaining performance obligation, percentage	53.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	6 months

Inventories - Inventories State

Inventories - Inventories Stated at Lower of Average Cost or Net Realizable Value (Detail) - USD ($) $ in Thousands	Jun. 29, 2019	Dec. 29, 2018
Inventory Disclosure [Abstract]
Raw materials	$ 18,062	$ 16,354
Work-in-progress	8,681	9,134
Finished goods	5,847	5,109
Inventories	$ 32,590	$ 30,597

Equity-Based Compensation - Add

Equity-Based Compensation - Additional Information (Detail) - shares	3 Months Ended	6 Months Ended
	Jun. 29, 2019	Jun. 29, 2019
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%
Offering periods		2 years
Purchase intervals of a series		6 months
Stock issued under Employee Stock Purchase Plans		181,431
Options granted under performance stock options		340,750
Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted under performance stock options	37,500	37,500
Performance stock option vesting period		1 year 1 month 6 days

Equity-Based Compensation - Eff

Equity-Based Compensation - Effect of Recording Equity-Based Compensation (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	$ 753	$ 785	$ 1,509	$ 1,602
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	191	216	398	350
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	352	230	642	636
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	$ 210	$ 339	$ 469	$ 616

Equity-Based Compensation - Opt

Equity-Based Compensation - Option Activity and Changes (Detail) - $ / shares	6 Months Ended
	Jun. 29, 2019
Shares
Options outstanding at December 29, 2018	2,070,749
Options granted	340,750
Options cancelled and forfeited	(127,918)
Options exercised	(72,122)
Options outstanding at June 29, 2019	2,211,459
Options exercisable at June 29, 2019	1,390,622
Weighted-Average Exercise Price
Options outstanding at December 29, 2018	$ 6.76
Options granted	5.44
Options cancelled and forfeited	7.54
Options exercised	4.22
Options outstanding at June 29, 2019	6.59
Options exercisable at June 29, 2019	$ 6.68

Equity-Based Compensation - Wei

Equity-Based Compensation - Weighted-Average Fair Value of Stock Options and Employee Stock Purchase Rights using Weighted-Average Assumptions (Detail) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average fair value of grants per share	$ 2.05	$ 1.87	$ 2.06	$ 1.99
Expected volatility	43.19%	44.50%	43.20%	43.80%
Risk free interest rate	1.86%	2.58%	1.88%	2.58%
Expected term of options (in years)	4 years 7 months 6 days	4 years 6 months	4 years 7 months 6 days	4 years 6 months
Dividend yield	0.00%	0.00%	0.00%	0.00%
Stock Purchase Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
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%

Equity-Based Compensation - W_2

Equity-Based Compensation - Weighted-Average Fair Value of Performance Stock Options Using Weighted-Average Assumptions (Detail) - Performance Stock Options (PSO's)	3 Months Ended
	Jun. 29, 2019$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average fair value of grants per share	$ 1.75
Expected volatility	43.43%
Risk free interest rate	1.96%
Expected term (in years)	0 years
Dividend yield	0.00%

Equity-Based Compensation - Sum

Equity-Based Compensation - Summary of Restricted Stock Units Activity (Detail) - Restricted Stock Units (RSUs)	6 Months Ended
	Jun. 29, 2019$ / sharesshares
Shares
Non-vested RSUs at December 29, 2018 | shares	462,409
Granted | shares	250,078
Vested | shares	(117,802)
Cancelled and forfeited | shares	(11,391)
Non-vested RSUs at June 29, 2019 | shares	583,294
Weighted Average Grant Date Fair Value
Non-vested RSUs at December 29, 2018 | $ / shares	$ 6.92
Granted | $ / shares	5.64
Vested | $ / shares	7.32
Cancelled and forfeited | $ / shares	6.59
Non-vested RSUs at June 29, 2019 | $ / shares	$ 6.30

Purchased Intangible Assets - D

Purchased Intangible Assets - Details of Finite-lived Intangible Assets by Segment (Detail) - USD ($) $ in Thousands	Jun. 29, 2019	Dec. 29, 2018
Finite-Lived Intangible Assets [Line Items]
Finite Lived, Gross Carrying Amount	$ 8,387
Accumulated Amortization	(7,806)	$ (7,498)
Finite Lived, Net Carrying Amount	581	$ 889
TFE
Finite-Lived Intangible Assets [Line Items]
Finite Lived, Gross Carrying Amount	7,172
Accumulated Amortization	(6,648)
Finite Lived, Net Carrying Amount	524
Photonics
Finite-Lived Intangible Assets [Line Items]
Finite Lived, Gross Carrying Amount	1,215
Accumulated Amortization	(1,158)
Finite Lived, Net Carrying Amount	$ 57

Purchased Intangible Assets - A

Purchased Intangible Assets - Additional Information (Detail) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 29, 2019	Jun. 29, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Total amortization expense of finite-lived intangibles	$ 154,000	$ 307,000

Purchased Intangible Assets - F

Purchased Intangible Assets - Future Amortization Expense (Detail) - USD ($) $ in Thousands	Jun. 29, 2019	Dec. 29, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
2019	$ 307
2020	274
Finite Lived, Net Carrying Amount	$ 581	$ 889

Acquisition-Related Contingen_3

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

Acquisition-Related Contingen_4

Acquisition-Related Contingent Consideration - Reconciliation of Change in Fair Value Measurement of Contingent Consideration Liability (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Restructuring And Related Activities [Abstract]
Opening balance	$ 132	$ 361	$ 223	$ 362
Changes in fair value		9	7	8
Cash payments made	$ (132)		$ (230)
Closing balance		$ 370		$ 370

Warranty - Additional Informati

Warranty - Additional Information (Detail)	6 Months Ended
	Jun. 29, 2019
Guarantees [Abstract]
Minimum product warranty range	12 months
Maximum product warranty range	24 months

Warranty - Activity in Warranty

Warranty - Activity in Warranty Provision Account (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Guarantees [Abstract]
Opening balance	$ 1,297	$ 866	$ 997	$ 994
Expenditures incurred under warranties	(257)	(182)	(424)	(418)
Accruals for product warranties issued during the reporting period	78	174	402	278
Adjustments to previously existing warranty accruals	(170)	53	(27)	57
Closing balance	$ 948	$ 911	$ 948	$ 911

Warranty - Balance Sheet Classi

Warranty - Balance Sheet Classification of Warranty Provision Account (Detail) - USD ($) $ in Thousands	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 30, 2017
Guarantees [Abstract]
Other accrued liabilities	$ 782		$ 839
Other long-term liabilities	166		158
Total warranty provision	$ 948	$ 1,297	$ 997	$ 911	$ 866	$ 994

Guarantees - Additional Informa

Guarantees - Additional Information (Detail) $ in Millions	Jun. 29, 2019USD ($)
Guarantees [Abstract]
Letters of credit and bank guarantees outstanding, amount	$ 1.3
Letters of credit and bank guarantees collateralized by restricted cash	$ 1.3

Leases - Schedule of Lease Asse

Leases - Schedule of Lease Assets and Lease Liabilities (Detail) - USD ($) $ in Thousands	Jun. 29, 2019	Dec. 30, 2018
Assets:
Operating lease right-of-use assets	$ 10,503	$ 11,635
Liabilities:
Current operating lease liabilities	2,486	2,581
Noncurrent operating lease liabilities	9,925	11,120
Operating Lease, Liability	$ 12,411	$ 13,701

Leases - Lease Costs (Details)

Leases - Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Leases [Abstract]
Operating lease cost	$ 782	$ 756	$ 1,564	$ 1,515
Short-term lease cost	19	21	38	42
Total lease cost	$ 801	$ 777	$ 1,602	$ 1,557

Leases - Schedule of Maturity o

Leases - Schedule of Maturity of Operating Lease Liabilities (Detail) - USD ($) $ in Thousands	Jun. 29, 2019	Dec. 30, 2018
Leases [Abstract]
2019	$ 1,687
2020	2,993
2021	2,989
2022	3,074
2023	3,161
2024	529
Total lease payments	14,433
Less: Interest	2,022
Present value of lease liabilities	$ 12,411	$ 13,701

Leases - Schedule of Lease Term

Leases - Schedule of Lease Term and Discount Rate (Detail)	Jun. 29, 2019
Leases [Abstract]
Weighted-average remaining lease term (in years)	4 years 7 months 6 days
Weighted-average discount rate	6.50%

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Cash Flow Information Related to Leases (Detail) $ in Thousands	6 Months Ended
	Jun. 29, 2019USD ($)
Leases [Abstract]
Operating cash outflows from operating leases	$ 1,760

Cash, Cash Equivalents and In_3

Cash, Cash Equivalents and Investments - Cash, Cash Equivalents and Short-Term Investments and Long-Term Investments (Detail) - USD ($) $ in Thousands	Jun. 29, 2019	Dec. 29, 2018
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 39,229	$ 39,190
Unrealized Holding Gains	52	5
Unrealized Holding Losses	2	32
Fair Value	39,279	39,163
Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	23,530	18,715
Unrealized Holding Gains	1
Fair Value	23,531	18,715
Cash and Cash Equivalents | Cash
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	13,034	13,334
Fair Value	13,034	13,334
Cash and Cash Equivalents | Money market funds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	8,186	3,335
Fair Value	8,186	3,335
Cash and Cash Equivalents | U.S. treasury and agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,310	2,046
Unrealized Holding Gains	1
Fair Value	2,311	2,046
Short-term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	13,279	16,097
Unrealized Holding Gains	34	1
Unrealized Holding Losses	2	22
Fair Value	13,311	16,076
Short-term Investments | Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,000	5,299
Unrealized Holding Gains	4	1
Unrealized Holding Losses		1
Fair Value	2,004	5,299
Short-term Investments | Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,029	2,242
Unrealized Holding Gains	3
Unrealized Holding Losses		1
Fair Value	2,032	2,241
Short-term Investments | Corporate bonds and medium-term notes
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	6,676	4,759
Unrealized Holding Gains	26
Unrealized Holding Losses	1	13
Fair Value	6,701	4,746
Short-term Investments | U.S. treasury and agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,074	3,297
Unrealized Holding Gains	1
Unrealized Holding Losses	1	5
Fair Value	2,074	3,292
Short-term Investments | Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	500	500
Unrealized Holding Losses		2
Fair Value	500	498
Other Long-term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,420	4,378
Unrealized Holding Gains	17	4
Unrealized Holding Losses		10
Fair Value	2,437	4,372
Other Long-term Investments | Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	500	500
Fair Value	500	500
Other Long-term Investments | Corporate bonds and medium-term notes
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,920	2,879
Unrealized Holding Gains	17	4
Unrealized Holding Losses		4
Fair Value	$ 1,937	2,879
Other Long-term Investments | U.S. treasury and agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		999
Unrealized Holding Losses		6
Fair Value		$ 993

Cash, Cash Equivalents and In_4

Cash, Cash Equivalents and Investments - Contractual Maturities of Available-For-Sale Securities (Detail) $ in Thousands	Jun. 29, 2019USD ($)
Investments Debt And Equity Securities [Abstract]
Amortized Cost, Due in one year or less	$ 23,775
Amortized Cost, Due after one through five years	2,420
Amortized Cost	26,195
Fair Value, Due in one year or less	23,808
Fair Value, Due after one through five years	2,437
Fair Value	$ 26,245

Cash, Cash Equivalents and In_5

Cash, Cash Equivalents and Investments - Fair Market Value of Investments with Unrealized Losses Not Deemed to be Other-Than Temporarily Impaired (Detail) $ in Thousands	Jun. 29, 2019USD ($)
Debt Securities, Available-for-sale [Line Items]
Unrealized Loss Position, Greater than 12 Months, Fair Value	$ 1,498
Unrealized Loss Position, Greater than 12 Months, Gross Unrealized Losses	2
Corporate bonds and medium-term notes
Debt Securities, Available-for-sale [Line Items]
Unrealized Loss Position, Greater than 12 Months, Fair Value	499
Unrealized Loss Position, Greater than 12 Months, Gross Unrealized Losses	1
U.S. treasury and agency securities
Debt Securities, Available-for-sale [Line Items]
Unrealized Loss Position, Greater than 12 Months, Fair Value	999
Unrealized Loss Position, Greater than 12 Months, Gross Unrealized Losses	$ 1

Cash, Cash Equivalents and In_6

Cash, Cash Equivalents and Investments - Fair Value Hierarchy of Available-for-Sale Securities Measured at Fair Value on Recurring Basis (Detail) $ in Thousands	Jun. 29, 2019USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	$ 26,245
Fair Value, Measurements, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	26,245
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	8,186
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	2,504
Fair Value, Measurements, Recurring | Commercial paper
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	2,032
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	4,385
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	8,638
Fair Value, Measurements, Recurring | Municipal bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total recurring fair value measurements	500
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	12,571
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	8,186
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	4,385
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	13,674
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	2,504
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	2,032
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	8,638
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	$ 500

Derivative Instruments - Additi

Derivative Instruments - Additional Information (Detail)	6 Months Ended
	Jun. 29, 2019
Derivative Instrument Detail [Abstract]
Maturity of foreign currency derivative	30 days

Derivative Instruments - Summar

Derivative Instruments - Summary of Outstanding Derivative Instruments on Gross Basis as Recorded in Consolidated Balance Sheets (Detail) - Undesignated Hedges - USD ($) $ in Thousands		Jun. 29, 2019	Dec. 29, 2018
Derivatives, Fair Value [Line Items]
Notional Amounts		$ 890	$ 1,764
Derivative Liabilities		3	8
Forward Foreign Currency Contracts
Derivatives, Fair Value [Line Items]
Notional Amounts		890	1,764
Derivative Liabilities	[1]	$ 3	$ 8
[1]	Other accrued liabilities

Equity - Additional Information

Equity - Additional Information (Detail) - USD ($) $ in Millions	Aug. 15, 2018	Jun. 29, 2019	Nov. 21, 2013
Equity [Abstract]
Stock repurchase authorized amount	$ 40		$ 30
Increase in stock repurchase program	$ 10
Stock repurchase remained available for future stock repurchase		$ 10.9

Equity - Schedule of Stock Repu

Equity - Schedule of Stock Repurchases (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 29, 2019	Jun. 29, 2019
Equity [Abstract]
Shares of common stock repurchased	9	9
Cost of stock repurchased	$ 42	$ 42
Average price paid per share	$ 4.69	$ 4.69

Equity - Schedule of Changes in

Equity - Schedule of Changes in Stockholders' Equity (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Class of Stock [Line Items]
Beginning balance	$ 89,087	$ 78,518	$ 89,624	$ 82,663
Cumulative effect of accounting change		(1,634)		(1,634)
Common stock issued under employee plans		53	1,021	2,118
Shares withheld for net share settlement of RSUs	(240)	(481)	(268)	(814)
Equity-based compensation expense	753	785	1,509	1,602
Net loss	(1,182)	(167)	(3,574)	(5,303)
Other comprehensive income (loss)	(29)	(122)	77	(46)
Common stock repurchases	(42)		(42)
Ending balance	88,347	78,586	88,347	78,586
Common Stock and Additional Paid-in Capital
Class of Stock [Line Items]
Beginning balance	184,976	180,092	183,227	177,543
Common stock issued under employee plans		53	1,021	2,118
Shares withheld for net share settlement of RSUs	(240)	(481)	(268)	(814)
Equity-based compensation expense	753	785	1,509	1,602
Ending balance	185,489	180,449	185,489	180,449
Treasury Stock
Class of Stock [Line Items]
Beginning balance	(29,047)	(28,489)	(29,047)	(28,489)
Common stock repurchases	(42)		(42)
Ending balance	(29,089)	(28,489)	(29,089)	(28,489)
Accumulated Other Comprehensive Income
Class of Stock [Line Items]
Beginning balance	484	566	378	490
Other comprehensive income (loss)	(29)	(122)	77	(46)
Ending balance	455	444	455	444
Accumulated Deficit
Class of Stock [Line Items]
Beginning balance	(67,326)	(73,651)	(64,934)	(66,881)
Cumulative effect of accounting change		(1,634)		(1,634)
Net loss	(1,182)	(167)	(3,574)	(5,303)
Ending balance	$ (68,508)	$ (73,818)	$ (68,508)	$ (73,818)

Equity - Changes in Accumulated

Equity - Changes in Accumulated Other Comprehensive Income by Component (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 89,087	$ 78,518	$ 89,624	$ 82,663
Net current-period other comprehensive income (loss)	(29)	(122)	77	(46)
Ending balance	88,347	78,586	88,347	78,586
Foreign currency
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	466	639	405	535
Other comprehensive income (loss) before reclassification	(61)	(144)		(40)
Net current-period other comprehensive income (loss)	(61)	(144)		(40)
Ending balance	405	495	405	495
Unrealized holding gains (losses) on available- for-sale investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	18	(73)	(27)	(45)
Other comprehensive income (loss) before reclassification	32	22	77	(6)
Net current-period other comprehensive income (loss)	32	22	77	(6)
Ending balance	50	(51)	50	(51)
Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	484	566	378	490
Other comprehensive income (loss) before reclassification	(29)	(122)	77	(46)
Net current-period other comprehensive income (loss)	(29)	(122)	77	(46)
Ending balance	$ 455	$ 444	$ 455	$ 444

Net Loss Per Share - Computatio

Net Loss Per Share - Computation of Basic and Diluted Net Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Net loss	$ (1,182)	$ (167)	$ (3,574)	$ (5,303)
Weighted-average shares – basic	22,991	22,461	22,923	22,284
Weighted-average shares – diluted	22,991	22,461	22,923	22,284
Net loss per share – basic	$ (0.05)	$ (0.01)	$ (0.16)	$ (0.24)
Net loss per share –diluted	$ (0.05)	$ (0.01)	$ (0.16)	$ (0.24)

Segment Reporting - Additional

Segment Reporting - Additional Information (Detail)	6 Months Ended
	Jun. 29, 2019Segment
Segment Reporting [Abstract]
Number of reportable segments	2
Allocation of corporate expenses to the segments	3.00%

Segment Reporting - Information

Segment Reporting - Information for Each Reportable Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Total segment net revenues	$ 22,314	$ 26,098	$ 47,141	$ 44,072
Income (loss) from operations	(928)	65	(2,925)	(5,056)
Interest income and other income (expense), net	163	133	322	278
Income (loss) before income taxes	(765)	198	(2,603)	(4,778)
TFE
Segment Reporting Information [Line Items]
Total segment net revenues	13,264	20,848	32,209	33,637
Photonics
Segment Reporting Information [Line Items]
Total segment net revenues	9,050	5,250	14,932	10,435
Operating Segments
Segment Reporting Information [Line Items]
Income (loss) from operations	196	776	(1,046)	(2,943)
Operating Segments | TFE
Segment Reporting Information [Line Items]
Income (loss) from operations	(1,291)	1,220	(1,892)	(1,289)
Operating Segments | Photonics
Segment Reporting Information [Line Items]
Income (loss) from operations	1,487	(444)	846	(1,654)
Unallocated Amount to Segment
Segment Reporting Information [Line Items]
Unallocated costs	$ (1,124)	$ (711)	$ (1,879)	$ (2,113)

Segment Reporting - Assets for

Segment Reporting - Assets for Each Reportable Segment (Detail) - USD ($) $ in Thousands	Jun. 29, 2019	Dec. 29, 2018
Segment Reporting, Asset Reconciling Item [Line Items]
Consolidated total assets	$ 123,879	$ 122,070
Cash, cash equivalents and investments	39,279	39,163
Restricted cash	1,255	1,169
Deferred income taxes	7,396	7,913
Other current assets	1,223	1,341
Common property, plant and equipment	1,171	1,017
Common operating lease right-of-use assets	2,094
Other assets	889	879
Operating Segments
Segment Reporting, Asset Reconciling Item [Line Items]
Consolidated total assets	70,572	70,588
Operating Segments | TFE
Segment Reporting, Asset Reconciling Item [Line Items]
Consolidated total assets	51,137	53,867
Operating Segments | Photonics
Segment Reporting, Asset Reconciling Item [Line Items]
Consolidated total assets	$ 19,435	$ 16,721

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018	Dec. 29, 2018
Income Taxes [Line Items]
Provision for income taxes	$ 417	$ 365	$ 971	$ 525
Income tax provision on earnings of subsidiaries	201		563
Inland Revenue, Singapore (IRAS)
Income Taxes [Line Items]
Deposit for contested taxes and related interest	732		732		$ 723
Foreign Tax Authority | Singapore
Income Taxes [Line Items]
Income tax charge (benefit)	$ 213	$ 312	$ 404	$ 457

Restructuring Charges - Additio

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

Restructuring Charges - Changes

Restructuring Charges - Changes in Restructuring Reserves (Detail) - Severance and Other Employee Related Costs $ in Thousands	6 Months Ended
	Jun. 30, 2018USD ($)
Restructuring Cost and Reserve [Line Items]
Provision for restructuring reserves	$ 95
Cash payments made	$ (95)

Related Party Transaction - Add

Related Party Transaction - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Related Party Transactions [Abstract]
Related party transaction, purchases from related party	$ 24,000	$ 42,000	$ 175,000	$ 123,000