SEGMENT INFORMATION - Business Segment Net Sales (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Net sales	$ 240,004	$ 239,940	$ 234,081	$ 239,659	$ 228,699	$ 229,948	$ 231,252	$ 232,540	$ 953,684	$ 922,439	$ 942,358
Cost of sales									617,478	620,383	661,907
Gross margin	86,337	85,361	82,994	81,514	74,993	76,544	77,349	73,170	336,206	302,056	280,451
Operating Expenses									153,297	142,863	135,265
Earnings from operations									182,909	159,193	145,186
Interest expense, net									16,528	22,613	10,268
Other income									(72)	(681)	1,169
Nonoperating Income (Expense)									16,456	21,932	11,437
Earnings before income tax expense	44,484	43,893	41,226	36,850	33,267	36,475	38,400	29,119	166,453	137,261	133,749
Income tax expense									37,978	28,718	28,382
Net earnings	$ 33,583	$ 33,837	$ 32,069	$ 28,986	$ 26,648	$ 29,075	$ 30,110	$ 22,710	128,475	108,543	105,367
Operating Segments | HNH
Segment Reporting Information [Line Items]
Net sales									600,258	550,751	527,131
Cost of sales									378,411	366,539	373,063
Gross margin									221,847	184,212	154,068
Operating Expenses									85,890	81,793	71,943
Earnings from operations									135,957	102,419	82,125
Operating Segments | ANH
Segment Reporting Information [Line Items]
Net sales									214,710	238,326	262,297
Cost of sales									171,409	183,827	200,252
Gross margin									43,301	54,499	62,045
Operating Expenses									29,288	26,923	25,989
Earnings from operations									14,013	27,576	36,056
Operating Segments | Specialty Products
Segment Reporting Information [Line Items]
Net sales									132,749	125,965	131,438
Cost of sales									59,449	62,183	70,343
Gross margin									73,300	63,782	61,095
Operating Expenses									33,394	29,203	28,306
Earnings from operations									39,906	34,579	32,789
Other and Unallocated
Segment Reporting Information [Line Items]
Net sales									5,967	7,397	21,492
Cost of sales									8,209	7,834	18,249
Gross margin									(2,242)	(437)	3,243
Operating Expenses									4,725	4,944	9,027
Earnings from operations									$ (6,967)	$ (5,381)	$ (5,784)