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Goodwill and other intangible assets | 12 Months Ended
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Jan. 02, 2016
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and other intangible assets |
14. | Goodwill and other intangible assets
The carrying amount of the goodwill at January 2, 2016 is $48.8 million. $41.0 million resulted from the acquisition of Evolution Robotics, Inc. in October 2012 and was assigned to the home robots reporting unit. $7.7 million (net of a subsequent write-down of $0.2 million) resulted from the acquisition of Nekton Research, LLC completed in September 2008 and was assigned to the defense and security reporting unit. In conjunction with the reorganization completed as of the beginning of the fiscal year 2013, the defense and security reporting unit was divided into two reporting units: the defense and security reporting unit and the research reporting unit. As a result, the goodwill of $7.9 million was reassigned utilizing a relative fair value allocation approach. $7.7 million and $0.2 million were reassigned to the defense and security and research reporting units, respectively. During the second quarter of 2013, the Company decided to refocus its funded research activities. The Company considered this decision to be an impairment indicator, requiring an interim impairment test within the research reporting unit. The Company performed an impairment assessment using the income approach, and determined that goodwill was impaired. The Company recorded an impairment loss of $0.2 million within general and administrative expenses during the fiscal year ended December 28, 2013. In the fourth quarter of 2015, the Company completed its annual goodwill impairment tests on the goodwill associated with the acquisitions of Evolution Robotics, Inc. and Nekton Research, LLC and did not identify any goodwill impairment. The Company further considered the subsequent event of the signed definitive agreement associated with the sale of the defense and security business unit, and reevaluated its position which incorporated the associated purchase price and reconfirmed that no impairment of the Nekton goodwill exists. Other intangible assets include the value assigned to completed technology, research contracts, and trade names. The estimated useful lives for all of these intangible assets are two to ten years. The intangible assets are being amortized on a straight-line basis, which is consistent with the pattern that the estimated economic benefits of the intangible assets are expected to be utilized. Intangible assets at January 2, 2016 and December 27, 2014 consisted of the following:
| January 2, 2016 |  | December 27, 2014
| Cost |  | Accumulated Amortization |  | Net |  | Cost |  | Accumulated Amortization |  | Impairment Loss |  | Net
| (In thousands)
Completed technology | $ | 26,900 |  |  | $ | 11,236 |  |  | $ | 15,664 |  |  | $ | 30,600 |  |  | $ | 9,691 |  |  | $ | 1,788 |  |  | $ | 19,121 |
Research contracts | — |  |  | — |  |  | — |  |  | 100 |  |  | 100 |  |  | — |  |  | — |
Tradename | 100 |  |  | 100 |  |  | — |  |  | 800 |  |  | 775 |  |  | — |  |  | 25 |
Total | $ | 27,000 |  |  | $ | 11,336 |  |  | $ | 15,664 |  |  | $ | 31,500 |  |  | $ | 10,566 |  |  | $ | 1,788 |  |  | $ | 19,146 |
As part of the Company's decision during 2013 to refocus its funded research activities, the Company decided to no longer pursue certain research contracts in which completed technology acquired as part of the acquisition of Nekton Research, LLC was utilized. As a result, the Company performed an impairment assessment of the associated intangible asset using the income approach, and recorded an impairment loss of $1.8 million within general and administrative expenses during the fiscal year ended December 28, 2013. Amortization expense related to acquired intangible assets was $3.5 million, $3.5 million, and $3.8 million for the fiscal years ended January 2, 2016, December 27, 2014 and December 28, 2013, respectively. The estimated future amortization expense related to current intangible assets in each of the five succeeding fiscal years is expected to be as follows:
| (In thousands)
2016 | $ | 3,457 |
2017 | 3,457 |
2018 | 3,457 |
2019 | 2,818 |
2020 | 900 |
Total | $ | 14,089 |

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- Definition The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16373-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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