BUSINESS SEGMENTS (Tables)

9 Months Ended

Sep. 24, 2016

Segment Reporting [Abstract]

Segment reporting information of sales and operating income

(7) BUSINESS SEGMENTS (Continued)

Summary by Business

	Thirteen Weeks Ended						Thirty-nine Weeks Ended
	September 24, 2016			September 26, 2015			September 24, 2016			September 26, 2015
SALES:
Engineered Support Structures segment:
Lighting, Traffic, and Roadway Products	$	159,089		$	147,470		$	468,582		$	447,639
Communication Products	44,095			51,940			115,489			130,431
Engineered Support Structures segment	203,184			199,410			584,071			578,070
Energy and Mining segment:
Offshore and Other Complex Steel Structures	27,330			26,813			76,207			74,796
Grinding Media	20,681			24,228			61,189			77,575
Access Systems	33,541			33,691			97,297			106,724
Energy and Mining segment	81,552			84,732			234,693			259,095
Utility Support Structures segment:
Steel	131,085			135,997			379,157			433,695
Concrete	19,582			28,687			67,275			70,259
Utility Support Structures segment	150,667			164,684			446,432			503,954
Coatings segment	70,082			76,201			213,961			226,654
Irrigation segment	127,809			126,775			438,575			474,655
Other	—			1,691			—			6,202
Total	633,294			653,493			1,917,732			2,048,630
INTERSEGMENT SALES:
Engineered Support Structures segment	10,076			5,027			29,202			16,266
Energy & Mining segment	319			1,950			3,386			2,051
Utility Support Structures segment	276			287			538			849
Coatings segment	10,079			11,428			31,778			36,153
Irrigation segment	2,297			1,287			5,727			4,769
Other	—			939			—			3,446
Total	23,047			20,918			70,631			63,534
NET SALES:
Engineered Support Structures segment	193,108			194,383			554,869			561,804
Energy & Mining segment	81,233			82,782			231,307			257,044
Utility Support Structures segment	150,391			164,397			445,894			503,105
Coatings segment	60,003			64,773			182,183			190,501
Irrigation segment	125,512			125,488			432,848			469,886
Other	—			752			—			2,756
Total	$	610,247		$	632,575		$	1,847,101		$	1,985,096
OPERATING INCOME:
Engineered Support Structures segment	$	19,577		$	20,073		$	54,753		$	45,742
Energy & Mining segment	3,941			(4,302		)	9,184			2,762
Utility Support Structures segment	16,030			14,505			48,326			40,261
Coatings segment	11,696			3,145			37,132			22,006
Irrigation segment	14,153			14,194			70,761			76,233
Other	—			(1,386		)	—			(3,765		)
Corporate	(12,157		)	(9,217		)	(32,745		)	(34,544		)
Total	$	53,240		$	37,012		$	187,411		$	148,695