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Note 12 - Segment Information - Revenues and Long-lived Assets by Geographical Area (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 30, 2017 | Sep. 30, 2017 | [2] | Jul. 01, 2017 | [3] | Apr. 01, 2017 | [4] | Dec. 31, 2016 | Oct. 01, 2016 | [6] | Jul. 02, 2016 | [7] | Apr. 02, 2016 | [8] | Dec. 30, 2017 | Dec. 31, 2016 | Jan. 02, 2016
Net sales | $ 304,849 | [1] | $ 317,889 | $ 313,355 | $ 285,441 | $ 284,518 | [5] | $ 280,331 | $ 271,912 | $ 219,398 | $ 1,221,534 | $ 1,056,159 | $ 867,864
Long-lived assets | 250,577 |  |  |  |  | 217,175 |  |  |  |  | 250,577 | 217,175 | 162,568
Additions to long-lived assets |  |  |  |  |  |  |  |  |  |  | 65,925 | 46,228 | 44,019
UNITED STATES |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  | 383,025 | 356,674 | 344,305
Long-lived assets | 23,490 |  |  |  |  | 23,731 |  |  |  |  | 23,490 | 23,731 | 23,965
Additions to long-lived assets |  |  |  |  |  |  |  |  |  |  | 3,518 | 4,694 | 8,609
CHINA |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  | 321,111 | 263,701 | 193,792
Long-lived assets | 86,310 |  |  |  |  | 65,345 |  |  |  |  | 86,310 | 65,345 | 37,241
Additions to long-lived assets |  |  |  |  |  |  |  |  |  |  | 32,775 | 13,181 | 9,710
Other Countries [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  | 517,398 | 435,784 | 329,767
Long-lived assets | 47,138 |  |  |  |  | 42,492 |  |  |  |  | 47,138 | 42,492 | 20,707
Additions to long-lived assets |  |  |  |  |  |  |  |  |  |  | 7,258 | 7,590 | 3,887
MEXICO |  |  |  |  |  |  |  |  |  |  |  |  |
Long-lived assets | 62,510 |  |  |  |  | 52,262 |  |  |  |  | 62,510 | 52,262 | 47,130
Additions to long-lived assets |  |  |  |  |  |  |  |  |  |  | 19,395 | 15,667 | 9,193
PHILIPPINES |  |  |  |  |  |  |  |  |  |  |  |  |
Long-lived assets | $ 31,129 |  |  |  |  | $ 33,345 |  |  |  |  | 31,129 | 33,345 | 33,525
Additions to long-lived assets |  |  |  |  |  |  |  |  |  |  | $ 2,979 | $ 5,096 | $ 12,620
[1] | In the fourth quarter of 2017, the Company recorded an estimated one-time tax charge of $49 million for the enactment of the Tax Cuts and Jobs Act for deemed repatriation of unremitted earnings of foreign subsidiaries, $1.4 million in acquisition and integration costs and $0.7 million in restructuring and production costs related to the transfer of Asian operations.
[2] | In the third quarter of 2017, the Company recorded $4.8 million in acquisition and integration costs and $1.5 million in restructuring and production costs related to the transfer of Asian operations.
[3] | In the second quarter of 2017, the Company recorded $0.3 million in acquisition and integration costs.
[4] | In the first quarter of 2017, the Company $1.5 million in acquisition and integration costs
[5] | In the fourth quarter of 2016, the Company recorded ($0.1) million gain related to the Company's transfer of its reed sensor manufacturing operations from the U.S. and China to the Philippines, $1.2 million of restructuring costs, $3.2 million in acquisition and integration costs and $0.3 million in non-cash inventory charges related to the 2016 acquisitions.
[6] | In the third quarter of 2016, the Company recorded $0.9 million of restructuring costs, $5.9 million in acquisition and integration costs, $14.8 million of charges related to the impairment of the Custom Products reporting unit and $0.5 million in non-cash inventory charges as noted above.
[7] | In the second quarter of 2016, the Company recorded $0.7 million related to the reed sensor manufacturing transfer as noted above, $0.1 million of restructuring costs, $6.1 million in acquisition and integration costs, $0.3 million in charges related to the closure of the manufacturing facility in Denmark and $6.9 million in non-cash inventory charges as noted above.
[8] | In the first quarter of 2016, the Company recorded $1.0 million related to the reed sensor manufacturing transfer as noted above, $0.4 million of restructuring costs, $6.2 million in acquisition and integration costs, and $1.6 million in charges related to the closure of the manufacturing facility in Denmark.

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