BUSINESS SEGMENTS (Tables)

9 Months Ended

Sep. 25, 2021

Segment Reporting [Abstract]

Segment reporting information of sales and operating income

Summary by Business

	Thirteen weeks ended				Thirty-nine weeks ended
	September 25, 2021		September 26, 2020		September 25, 2021		September 26, 2020
SALES:
Utility Support Structures segment:
Steel	$	199,946	$	156,082	$	545,417	$	482,430
Concrete	39,656		39,215		123,477		120,653
Engineered Solar Tracker Solutions	13,224		43,287		28,690		56,830
Offshore and Other Complex Steel Structures	23,676		35,809		99,914		71,265
Utility Support Structures segment	$	276,502	$	274,393	$	797,498	$	731,178
Engineered Support Structures segment:
Lighting, Traffic, and Highway Safety Products	$	188,589	$	181,571	$	529,432	$	534,585
Communication Products	63,424		50,677		164,055		139,759
Access Systems	29,084		23,408		79,326		65,439
Engineered Support Structures segment	281,097		255,656		772,813		739,783
Coatings segment	96,685		87,886		288,131		255,976
Irrigation segment:
North America	116,308		75,803		395,096		281,397
International	124,023		63,406		356,864		165,171
Irrigation segment	240,331		139,209		751,960		446,568
Total	894,615		757,144		2,610,402		2,173,505
INTERSEGMENT SALES:
Utility Support Structures segment	—		1,914		435		7,278
Engineered Support Structures segment	48		711		268		8,599
Coatings segment	21,779		19,188		64,029		56,021
Irrigation segment	4,006		1,361		7,373		4,629
Total	25,833		23,174		72,105		76,527
NET SALES:
Utility Support Structures segment	276,502		272,479		797,063		723,900
Engineered Support Structures segment	281,049		254,945		772,545		731,184
Coatings segment	74,906		68,698		224,102		199,955
Irrigation segment	236,325		137,848		744,587		441,939
Total	$	868,782	$	733,970	$	2,538,297	$	2,096,978
OPERATING INCOME:
Utility Support Structures segment	$	24,561	$	25,881	$	61,168	$	75,255
Engineered Support Structures segment	34,383		25,434		86,235		46,183
Coatings segment	12,478		12,416		40,018		33,618
Irrigation segment	27,735		14,687		108,467		60,701
Corporate	(22,962)		(16,939)		(59,857)		(43,943)
Total	$	76,195	$	61,479	$	236,031	$	171,814