BUSINESS SEGMENTS (Tables)

6 Months Ended

Jun. 27, 2020

Segment Reporting [Abstract]

Segment reporting information of sales and operating income

Summary by Business

	Thirteen weeks ended				Twenty-six weeks ended
	June 27, 2020		June 29, 2019		June 27, 2020		June 29, 2019
SALES:
Engineered Support Structures segment:
Lighting, Traffic, and Highway Safety Products	$	181,027	$	181,575	$	353,014	$	338,759
Communication Products	50,886		47,454		89,082		90,319
Access Systems	21,472		29,719		42,031		59,958
Engineered Support Structures segment	253,385		258,748		484,127		489,036
Utility Support Structures segment:
Steel	159,817		147,116		326,348		306,876
Concrete	45,653		30,560		81,438		60,404
Engineered Solar Tracker Solutions	4,619		9,932		13,543		40,224
Offshore and Other Complex Steel Structures	21,235		22,221		35,456		46,247
Utility Support Structures segment	231,324		209,829		456,785		453,751
Coatings segment	80,005		98,406		168,090		185,185
Irrigation segment:					—
North America	99,034		102,810		205,594		211,287
International	51,605		52,375		101,765		96,714
Irrigation segment	150,639		155,185		307,359		308,001
Total	715,353		722,168		1,416,361		1,435,973
INTERSEGMENT SALES:
Engineered Support Structures segment	4,512		1,183		7,888		3,502
Utility Support Structures segment	2,851		820		5,364		1,484
Coatings segment	17,338		17,317		36,833		33,865
Irrigation segment	1,844		1,977		3,268		4,112
Total	26,545		21,297		53,353		42,963
NET SALES:
Engineered Support Structures segment	248,873		257,565		476,239		485,534
Utility Support Structures segment	228,473		209,009		451,421		452,267
Coatings segment	62,667		81,089		131,257		151,320
Irrigation segment	148,795		153,208		304,091		303,889
Total	$	688,808	$	700,871	$	1,363,008	$	1,393,010
OPERATING INCOME:
Engineered Support Structures segment	$	4,818	$	20,882	$	20,749	$	33,327
Utility Support Structures segment	21,650		16,033		49,374		41,081
Coatings segment	10,148		15,032		21,202		25,172
Irrigation segment	22,351		21,530		46,014		41,664
Corporate	(15,527)		(12,003)		(27,004)		(25,168)
Total	$	43,440	$	61,474	$	110,335	$	116,076