SEGMENT INFORMATION - Business Segment Net Sales (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Segment Reporting Information [Line Items]
Net sales	$ 270,709	$ 250,519
Cost of sales	169,625	162,351
Gross margin	101,084	88,168
Operating expenses	45,458	37,153
Earnings from operations	55,626	51,015
Interest expense, net	2,213	2,924
Other expense, net	891	151
Other expenses	3,104	3,075
Earnings before income tax expense	52,522	47,940
Income tax expense	12,237	10,887
Net earnings	40,285	37,053
Operating Segments | HNH
Segment Reporting Information [Line Items]
Net sales	171,628	158,457
Cost of sales	105,772	99,383
Gross margin	65,856	59,074
Operating expenses	25,836	21,100
Earnings from operations	40,020	37,974
Operating Segments | ANH
Segment Reporting Information [Line Items]
Net sales	62,189	57,277
Cost of sales	47,200	44,917
Gross margin	14,989	12,360
Operating expenses	9,297	7,124
Earnings from operations	5,692	5,236
Operating Segments | SP
Segment Reporting Information [Line Items]
Net sales	34,727	33,275
Cost of sales	14,264	15,986
Gross margin	20,463	17,289
Operating expenses	8,528	7,704
Earnings from operations	11,935	9,585
Other and Unallocated
Segment Reporting Information [Line Items]
Net sales	2,165	1,510
Cost of sales	2,389	2,065
Gross margin	(224)	(555)
Operating expenses	1,797	1,225
Earnings from operations	$ (2,021)	$ (1,780)