Revenue | 3. Revenue The following tables represent a disaggregation of revenue from contracts with customers for the three and six months ended June 30, 2018 and July 1, 2017 along with the reportable segment for each category. As noted above, the prior period amounts have not been adjusted under the modified retrospective method. Major Products and Service Lines TFE Three Months Ended Three Months Ended (In thousands) HDD DCP PV Total HDD DCP PV Total Systems, upgrades and spare parts $ 19,221 $ — $ 1 $ 19,222 $ 11,975 $ 351 $ 8,996 $ 21,322 Field service 1,625 — 1 1,626 1,104 — — 1,104 Total TFE net revenues $ 20,846 $ — $ 2 $ 20,848 $ 13,079 $ 351 $ 8,996 $ 22,426 Six Months Ended Six Months Ended July 1, 2017 (In thousands) HDD DCP PV Total HDD DCP PV Total Systems, upgrades and spare parts $ 29,614 $ 1 $ 3 $ 29,618 $ 19,256 $ 13,138 $ 8,996 $ 41,390 Field service 3,980 — 39 4,019 2,520 — — 2,520 Total TFE net revenues $ 33,594 $ 1 $ 42 $ 33,637 $ 21,776 $ 13,138 $ 8,996 $ 43,910 Three Months Ended Six Months Ended Photonics June 30, 2018 July 1, 2017 June 30, 2018 July 1, 2017 (In thousands) Products: Military products $ 2,145 $ 7,213 $ 4,399 $ 13,920 Commercial products 54 16 54 62 Repair and other services 288 208 717 394 Total Photonics product net revenues 2,487 7,437 5,170 14,376 Technology development: CPFF 2,220 187 4,010 1,068 FFP 540 913 1,232 1,997 Time and materials 3 — 23 — Total technology development net revenues 2,763 1,100 5,265 3,065 Total Photonics net revenues $ 5,250 $ 8,537 $ 10,435 $ 17,441 Primary Geographical Markets Three Months Ended Three Months Ended June 30, 2018 July 1, 2017 (In thousands) TFE Photonics Total TFE Photonics Total United States $ 1,351 $ 4,998 $ 6,349 $ 2,050 $ 8,333 $ 10,383 Asia 19,497 31 19,528 20,376 8 20,384 Europe — 187 187 — 196 196 Rest of World — 34 34 — — — Total net revenues $ 20,848 $ 5,250 $ 26,098 $ 22,426 $ 8,537 $ 30,963 Six Months Ended Six Months Ended June 30, 2018 July 1, 2017 (In thousands) TFE Photonics Total TFE Photonics Total United States $ 3,262 $ 9,760 $ 13,022 $ 2,663 $ 16,922 $ 19,585 Asia 30,375 31 30,406 41,247 8 41,255 Europe — 480 480 — 511 511 Rest of World — 164 164 — — — Total net revenues $ 33,637 $ 10,435 $ 44,072 $ 43,910 $ 17,441 $ 61,351 Timing of Revenue Recognition Three Months Ended Six Months Ended June 30, 2018 June 30, 2018 (In thousands) TFE Photonics Total TFE Photonics Total Products transferred at a point in time $ 20,848 $ 288 $ 21,136 $ 33,637 $ 717 $ 34,354 Products and services transferred over time — 4,962 4,962 — 9,718 9,718 $ 20,848 $ 5,250 $ 26,098 $ 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 30, 2018: June 30, 2018 December 30, 2017 Six Months Change (In thousands) TFE: Contract assets: Accounts receivable, unbilled $ 529 $ 1,368 $ (839 ) Contract liabilities: Deferred revenue $ 5,246 $ 5,190 $ 56 Customer advances 9,672 10,204 (532 ) $ 14,918 $ 15,394 $ (476 ) Photonics: Contract assets: Accounts receivable, unbilled $ 1,523 $ 1,346 $ 177 Retainage 294 281 13 $ 1,817 $ 1,627 $ 190 Contract liabilities: Deferred revenue $ 1,443 $ 97 $ 1,346 Customer advances 880 822 58 $ 2,323 $ 919 $ 1,404 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 30, 2018, contract assets in our TFE segment decreased by $839,000 primarily due to the final billing on four systems that were pending acceptance as of December 30, 2017 that completed installation and were accepted by the customer, offset by the accrual of revenue for an additional two systems delivered during the first half of fiscal 2018 that were pending acceptance as of June 30, 2018. Customer advances in our TFE segment generally represent amounts billed to the customer prior to transferring goods which represents a contract liability. We have elected to use the practical expedient to disregard the effect of the time value of money in a significant financing component when its payment terms are less than one year. These contract advances are liquidated when revenue is recognized. Deferred revenue in our TFE segment generally represents 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 we do not yet have a demonstrated history of meeting the acceptance criteria upon the customer’s receipt of product and represents a contract liability. During the six months ended June 30, 2018, we recognized revenue in our TFE segment of $6.6 million and $69,000 that was included in customer advances and deferred revenue, respectively, at the beginning of the period. Accounts receivable, unbilled in our Photonics segment represents a contract asset for revenue that has been recognized in advance of billing the customer, which is common for contracts in the defense industry. In our Photonics segment, amounts are billed as work progresses in accordance with agreed-upon contractual terms, either at periodic intervals (e.g., monthly) or upon achievement of contractual milestones. Generally, billing occurs subsequent to revenue recognition, resulting in contract assets. Our contracts with the U.S. government may also contain retainage provisions. Retainage represents a contract asset for the portion of the contract price earned by us for work performed, but held for payment by the U.S. government as a form of security until satisfactory completion of the contract. The retainage is billable upon completion of the contract performance and approval of final indirect expense rates by the government. During the six months ended June 30, 2018, contract assets in our Photonics segment increased by $190,000 primarily due to the accrual of revenue for incurred costs under CPFF contracts. Customer advances in our Photonics segment generally represent deposits from customers upon contract execution and upon achievement of contractual milestones which represents a contract liability. These deposits are liquidated when revenue is recognized. Deferred revenue in our Photonics segment includes $1.4 million deferred for the impact of the allocation and the timing of the recognition of revenues for a military product agreement with a tiered pricing structure. Deferred revenue in our Photonics segment also includes incurred costs under CPFF contracts pending approval of final indirect expense rates by the government and represents a contract liability. During the six months ended June 30, 2018, we recognized revenue in our Photonics segment of $206,000 and $229,000 that was included in customer advances and deferred revenue, respectively, at the beginning of the period. On June 30, 2018 we had $64.6 million of remaining performance obligations, which we also refer to as total backlog. Backlog at June 30, 2018 consisted of $54.2 million of TFE backlog and $10.3 million of Photonics backlog. We expect to recognize approximately 72.8% of our remaining performance obligations as revenue in 2018, and the balance in 2019. |