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BUSINESS SEGMENTS | 9 Months Ended
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Sep. 30, 2017
Segment Reporting [Abstract] |
BUSINESS SEGMENTS | BUSINESS SEGMENTS The accounting principles used in the preparation of the segment information are the same as those used for the consolidated financial statements as disclosed in Note 1, except that the segment assets and income reflect the FIFO basis of accounting for inventory. Certain inventories are accounted for using the LIFO basis in the consolidated financial statements. In the first quarter of 2017, the Company changed its reportable segment operating income to separate out the LIFO expense (benefit). Prior year financial information has been updated to reflect this change. Reportable segments are as follows: ENGINEERED SUPPORT STRUCTURES: This segment consists of the manufacture of engineered metal structures and components for the global lighting and traffic, wireless communication, and roadway safety industries; ENERGY AND MINING: This segment, all outside of the United States, consists of the manufacture of access systems applications, forged steel grinding media, on and offshore oil, gas, and wind energy structures; UTILITY SUPPORT STRUCTURES: This segment consists of the manufacture of engineered steel and concrete structures for the global utility industry; COATINGS: This segment consists of galvanizing, anodizing and powder coating services on a global basis; and IRRIGATION: This segment consists of the manufacture of agricultural irrigation equipment and related parts and services for the global agricultural industry and tubular products for industrial customers. The Company evaluates the performance of its business segments based upon operating income and invested capital. The Company does not allocate LIFO expense, interest expense, non-operating income and deductions, or income taxes to its business segments. (7) BUSINESS SEGMENTS (Continued) Summary by Business
| Thirteen Weeks Ended |  | Thirty-nine Weeks Ended
| September 30, 2017 |  | September 24, 2016 |  | September 30, 2017 |  | September 24, 2016
SALES: |  |  |  |  |  |  |
Engineered Support Structures segment: |  |  |  |  |  |  |
Lighting, Traffic, and Roadway Products | $ | 175,184 |  |  | $ | 159,089 |  |  | $ | 498,034 |  |  | $ | 468,582 |
Communication Products | 46,324 |  |  | 44,095 |  |  | 121,613 |  |  | 115,489 |
Engineered Support Structures segment | 221,508 |  |  | 203,184 |  |  | 619,647 |  |  | 584,071 |
Energy and Mining segment: |  |  |  |  |  |  |
Offshore and Other Complex Steel Structures | 25,046 |  |  | 27,330 |  |  | 75,372 |  |  | 76,207 |
Grinding Media | 19,800 |  |  | 20,681 |  |  | 60,466 |  |  | 61,189 |
Access Systems | 34,909 |  |  | 33,541 |  |  | 99,096 |  |  | 97,297 |
Energy and Mining segment | 79,755 |  |  | 81,552 |  |  | 234,934 |  |  | 234,693 |
Utility Support Structures segment: |  |  |  |  |  |  |
Steel | 160,948 |  |  | 131,085 |  |  | 471,072 |  |  | 379,157 |
Concrete | 18,811 |  |  | 19,582 |  |  | 67,921 |  |  | 67,275 |
Utility Support Structures segment | 179,759 |  |  | 150,667 |  |  | 538,993 |  |  | 446,432 |
Coatings segment | 82,593 |  |  | 70,082 |  |  | 235,842 |  |  | 213,961 |
Irrigation segment | 147,428 |  |  | 127,809 |  |  | 502,939 |  |  | 438,575 |
Total | 711,043 |  |  | 633,294 |  |  | 2,132,355 |  |  | 1,917,732 |
INTERSEGMENT SALES: |  |  |  |  |  |  |
Engineered Support Structures segment | 11,736 |  |  | 10,076 |  |  | 48,399 |  |  | 29,202 |
Energy & Mining segment | 6 |  |  | 319 |  |  | 6 |  |  | 3,386 |
Utility Support Structures segment | 1,231 |  |  | 276 |  |  | 2,448 |  |  | 538 |
Coatings segment | 14,913 |  |  | 10,079 |  |  | 44,230 |  |  | 31,778 |
Irrigation segment | 2,378 |  |  | 2,297 |  |  | 6,283 |  |  | 5,727 |
Total | 30,264 |  |  | 23,047 |  |  | 101,366 |  |  | 70,631 |
NET SALES: |  |  |  |  |  |  |
Engineered Support Structures segment | 209,772 |  |  | 193,108 |  |  | 571,248 |  |  | 554,869 |
Energy & Mining segment | 79,749 |  |  | 81,233 |  |  | 234,928 |  |  | 231,307 |
Utility Support Structures segment | 178,528 |  |  | 150,391 |  |  | 536,545 |  |  | 445,894 |
Coatings segment | 67,680 |  |  | 60,003 |  |  | 191,612 |  |  | 182,183 |
Irrigation segment | 145,050 |  |  | 125,512 |  |  | 496,656 |  |  | 432,848 |
Total | $ | 680,779 |  |  | $ | 610,247 |  |  | $ | 2,030,989 |  |  | $ | 1,847,101 |
OPERATING INCOME: |  |  |  |  |  |  |
Engineered Support Structures segment | $ | 16,226 |  |  | $ | 20,323 |  |  | $ | 45,683 |  |  | $ | 53,615 |
Energy & Mining segment | 1,417 |  |  | 3,941 |  |  | 9,195 |  |  | 9,184 |
Utility Support Structures segment | 22,108 |  |  | 16,195 |  |  | 65,005 |  |  | 48,201 |
Coatings segment | 14,577 |  |  | 11,696 |  |  | 36,091 |  |  | 37,132 |
Irrigation segment | 18,235 |  |  | 15,308 |  |  | 83,196 |  |  | 75,216 |
Adjustment to LIFO inventory valuation method | (1,626 | ) |  | (2,066 | ) |  | (2,839 | ) |  | (3,192 | )
Corporate | (11,014 | ) |  | (12,157 | ) |  | (33,616 | ) |  | (32,745 | )
Total | $ | 59,923 |  |  | $ | 53,240 |  |  | $ | 202,715 |  |  | $ | 187,411 |

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8981-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8971-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8595-108599 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8380-108599 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8933-108599 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8844-108599 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8984-108599 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9031-108599 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9054-108599 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8538-108599 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8864-108599 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8924-108599 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599 + Details
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