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BUSINESS SEGMENTS (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 26, 2015 USD ($) | Sep. 27, 2014 USD ($) | Sep. 26, 2015 USD ($) segment | Sep. 27, 2014 USD ($)
Business Segments |  |  |  |
Number of reportable segments | segment |  |  | 4 |
Maximum percentage of sales of other businesses and activities to consolidated sales as basis for aggregation |  |  | 10.00% |
Net sales | $ 632,575 | $ 765,668 | $ 1,985,096 | $ 2,360,007
Operating income | 37,012 | 87,803 | 148,695 | 291,427
Operating Segment |  |  |  |
Business Segments |  |  |  |
Sales | 655,243 | 797,945 | 2,056,988 | 2,478,882
Net sales | 632,575 | 765,668 | 1,985,096 | 2,360,007
Operating income | 37,012 | 87,803 | 148,695 | 291,427
Operating Segment | Engineered Infrastructure Products Segment |  |  |  |
Business Segments |  |  |  |
Sales | 259,869 | 294,899 | 759,331 | 827,713
Net sales | 252,938 | 284,203 | 741,274 | 779,286
Operating income | 14,154 | 33,200 | 43,560 | 75,534
Operating Segment | Engineered Infrastructure Products Segment | Lighting, Traffic, and Roadway Products |  |  |  |
Business Segments |  |  |  |
Sales | 147,425 | 158,977 | 447,380 | 462,707
Operating Segment | Engineered Infrastructure Products Segment | Communication Products |  |  |  |
Business Segments |  |  |  |
Sales | 51,940 | 45,952 | 130,431 | 119,456
Operating Segment | Engineered Infrastructure Products Segment | Offshore Structures |  |  |  |
Business Segments |  |  |  |
Sales | 26,813 | 41,284 | 74,796 | 105,805
Operating Segment | Engineered Infrastructure Products Segment | Access Systems |  |  |  |
Business Segments |  |  |  |
Sales | 33,691 | 48,686 | 106,724 | 139,745
Operating Segment | Utility Support Structures Segment |  |  |  |
Business Segments |  |  |  |
Sales | 164,684 | 181,185 | 503,954 | 608,942
Net sales | 164,397 | 180,559 | 503,105 | 606,796
Operating income | 14,505 | 16,975 | 40,261 | 76,107
Operating Segment | Utility Support Structures Segment | Steel |  |  |  |
Business Segments |  |  |  |
Sales | 135,997 | 156,112 | 433,695 | 527,123
Operating Segment | Utility Support Structures Segment | Concrete |  |  |  |
Business Segments |  |  |  |
Sales | 28,687 | 25,073 | 70,259 | 81,819
Operating Segment | Coatings Segment |  |  |  |
Business Segments |  |  |  |
Sales | 76,200 | 86,735 | 226,654 | 254,063
Net sales | 64,772 | 73,569 | 190,501 | 211,174
Operating income | 3,145 | 17,554 | 22,006 | 47,260
Operating Segment | Irrigation Segment |  |  |  |
Business Segments |  |  |  |
Sales | 112,205 | 174,288 | 420,502 | 606,938
Net sales | 112,199 | 174,287 | 420,484 | 606,924
Operating income | 10,539 | 26,888 | 60,655 | 111,507
Operating Segment | Other |  |  |  |
Business Segments |  |  |  |
Sales | 42,285 | 60,838 | 146,547 | 181,226
Net sales | 38,269 | 53,050 | 129,732 | 155,827
Operating income | 3,886 | 6,211 | 16,757 | 23,104
Operating Segment | Corporate |  |  |  |
Business Segments |  |  |  |
Operating income | (9,217) | (13,025) | (34,544) | (42,085)
Intersegment |  |  |  |
Business Segments |  |  |  |
Sales | 22,668 | 32,277 | 71,892 | 118,875
Intersegment | Engineered Infrastructure Products Segment |  |  |  |
Business Segments |  |  |  |
Sales | 6,931 | 10,696 | 18,057 | 48,427
Intersegment | Utility Support Structures Segment |  |  |  |
Business Segments |  |  |  |
Sales | 287 | 626 | 849 | 2,146
Intersegment | Coatings Segment |  |  |  |
Business Segments |  |  |  |
Sales | 11,428 | 13,166 | 36,153 | 42,889
Intersegment | Irrigation Segment |  |  |  |
Business Segments |  |  |  |
Sales | 6 | 1 | 18 | 14
Intersegment | Other |  |  |  |
Business Segments |  |  |  |
Sales | $ 4,016 | $ 7,788 | $ 16,815 | $ 25,399

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