BUSINESS SEGMENTS (Tables)

3 Months Ended

Mar. 28, 2020

Segment Reporting [Abstract]

Segment reporting information of sales and operating income

Summary by Business

	Thirteen weeks ended
	March 28, 2020		March 30, 2019
SALES:
Engineered Support Structures segment:
Lighting, Traffic, and Highway Safety Products	$	171,987	$	157,184
Communication Products	38,196		42,865
Access Systems	20,559		30,239
Engineered Support Structures segment	230,742		230,288
Utility Support Structures segment:
Steel	166,531		159,760
Concrete	35,785		29,844
Engineered Solar Tracker Solutions	8,924		30,292
Offshore and Other Complex Steel Structures	14,221		24,026
Utility Support Structures segment	225,461		243,922
Coatings segment	88,085		86,779
Irrigation segment:
North America	106,560		108,477
International	50,160		44,339
Irrigation segment	156,720		152,816
Total	701,008		713,805
INTERSEGMENT SALES:
Engineered Support Structures segment	3,376		2,319
Utility Support Structures segment	2,513		664
Coatings segment	19,495		16,548
Irrigation segment	1,424		2,135
Total	26,808		21,666
NET SALES:
Engineered Support Structures segment	227,366		227,969
Utility Support Structures segment	222,948		243,258
Coatings segment	68,590		70,231
Irrigation segment	155,296		150,681
Total	$	674,200	$	692,139
OPERATING INCOME:
Engineered Support Structures segment	$	15,931	$	12,445
Utility Support Structures segment	27,724		25,048
Coatings segment	11,054		10,140
Irrigation segment	23,663		20,134
Corporate	(11,477)		(13,165)
Total	$	66,895	$	54,602