CONSOLIDATED STATEMENTS OF EARNINGS - USD ($) $ in Thousands	12 Months Ended
	Dec. 27, 2025	Dec. 28, 2024	Dec. 30, 2023
Net sales	$ 4,104,102	$ 4,075,034	$ 4,174,598
Total cost of sales	2,864,166	2,833,822	2,938,564
Gross profit	1,239,936	1,241,212	1,236,034
Selling, general, and administrative expenses	717,633	716,628	768,423
Impairment of long-lived assets	91,337		140,844
Realignment charges	15,390		35,210
Operating income	415,576	524,584	291,557
Other income (expenses):
Interest expense	(40,542)	(58,722)	(56,808)
Interest income	8,189	7,183	6,230
Gain on deferred compensation investments	3,587	3,634	3,564
Gain (loss) on divestitures		(4,474)	2,994
Other	(9,168)	(3,524)	(11,085)
Total other expenses	(37,934)	(55,903)	(55,105)
Earnings before income taxes and equity method investment loss	377,642	468,681	236,452
Income tax expense (benefit):
Current	43,060	142,633	108,770
Deferred	(19,196)	(24,655)	(18,649)
Total income tax expense	23,864	117,978	90,121
Earnings before equity method investment loss	353,778	350,703	146,331
Equity method investment loss	(90)	(79)	(1,419)
Net earnings	353,688	350,624	144,912
Loss (earnings) attributable to redeemable noncontrolling interests	(3,415)	(2,365)	5,937
Net earnings attributable to Valmont Industries, Inc.	$ 350,273	$ 348,259	$ 150,849
Net earnings attributable to Valmont Industries, Inc. per share:
Basic	$ 16.91	$ 17.31	$ 6.85
Diluted	$ 16.79	$ 17.19	$ 6.78
Product sales
Net sales	$ 3,670,596	$ 3,660,779	$ 3,772,835
Total cost of sales	2,610,771	2,580,083	2,672,740
Service sales
Net sales	433,506	414,255	401,763
Total cost of sales	$ 253,395	$ 253,739	$ 265,824