Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net sales:
Total net sales	$ 1,689,651	$ 1,513,616	$ 1,334,223
Cost of sales	1,236,007	1,137,098	999,709
Gross profit	453,644	376,518	334,514
Selling, general and administrative expenses	240,158	212,649	202,939
Amortization of intangibles	15,519	15,277	14,637
Income from operations	197,967	148,592	116,938
Interest expense	(26,093)	(14,361)	(10,533)
Interest income	1,485	752	1,149
Other income (expense)	1,761	(673)	1,944
Income before income taxes	175,120	134,310	109,498
Provision for income taxes	38,959	32,382	29,253
Net income	$ 136,161	$ 101,928	$ 80,245
Net income per common share:
Basic (in dollars per share)	$ 11.42	$ 8.58	$ 6.78
Diluted (in dollars per share)	$ 11.36	$ 8.54	$ 6.75
Average common shares:
Basic (in shares)	11,920	11,877	11,837
Diluted (in shares)	11,987	11,934	11,896
Vegetation Management
Net sales:
Total net sales	$ 979,040	$ 937,065	$ 812,676
Income from operations	122,084	108,508	78,917
Industrial Equipment
Net sales:
Total net sales	710,611	576,551	521,547
Income from operations	$ 75,883	$ 40,084	$ 38,021