Segment Information - Schedule of Financial Information of Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting Information [Line Items]
Revenue	$ 517,958	$ 468,019	$ 1,498,424	$ 1,323,641
Cost of goods sold	347,632	309,171	994,034	869,857
Selling, general and administrative expenses	146,707	139,901	433,848	417,896
Operating income (loss)	23,619	18,947	70,542	35,888
Reconciliation to income (loss) before income taxes
Interest expense	(13,955)	(15,160)	(42,408)	(39,780)
Change in fair value of earnout liabilities	0	(858)	(1,000)	(861)
Other income (expense), net	(1,283)	(15)	(1,377)	82
Income (loss) before income taxes	8,381	2,914	25,757	(4,671)
Operating Segments
Reconciliation to income (loss) before income taxes
Interest expense	(13,955)	(15,160)	(42,408)	(39,780)
Change in fair value of earnout liabilities	0	(858)	(1,000)	(861)
Other income (expense), net	(1,283)	(15)	(1,377)	82
Income (loss) before income taxes	8,381	2,914	25,757	(4,671)
Intersegment revenue elimination
Segment Reporting Information [Line Items]
Revenue	(572)	(415)	(1,807)	(1,478)
Cost of goods sold	(542)	(415)	(1,783)	(1,478)
All Other
Segment Reporting Information [Line Items]
Selling, general and administrative expenses	1,745	174	5,607	3,954
Operating income (loss)	(1,775)	(174)	(5,631)	(3,954)
Lawson
Segment Reporting Information [Line Items]
Revenue	121,541	117,953	366,268	357,204
Lawson | Operating Segments
Segment Reporting Information [Line Items]
Revenue	121,549	117,957	366,324	357,261
Cost of goods sold	55,215	52,609	163,182	160,450
Selling, general and administrative expenses	60,949	64,622	183,466	185,849
Operating income (loss)	5,385	726	19,676	10,962
Lawson | Intersegment revenue elimination
Segment Reporting Information [Line Items]
Revenue	8	4	56	57
TestEquity
Segment Reporting Information [Line Items]
Revenue	206,310	195,210	589,596	579,721
TestEquity | Operating Segments
Segment Reporting Information [Line Items]
Revenue	206,479	195,244	590,298	579,874
Cost of goods sold	162,879	150,958	462,368	447,608
Selling, general and administrative expenses	40,965	39,957	116,352	133,328
Operating income (loss)	2,635	4,329	11,578	(1,062)
TestEquity | Intersegment revenue elimination
Segment Reporting Information [Line Items]
Revenue	169	34	702	153
Gexpro Services
Segment Reporting Information [Line Items]
Revenue	130,192	115,764	376,259	320,658
Gexpro Services | Operating Segments
Segment Reporting Information [Line Items]
Revenue	130,525	116,141	377,237	321,926
Cost of goods sold	89,609	79,493	259,255	221,341
Selling, general and administrative expenses	27,036	25,105	78,959	75,489
Operating income (loss)	13,880	11,543	39,023	25,096
Gexpro Services | Intersegment revenue elimination
Segment Reporting Information [Line Items]
Revenue	333	377	978	1,268
Canada Branch Division
Segment Reporting Information [Line Items]
Revenue	59,915	39,092	166,301	66,058
Canada Branch Division | Operating Segments
Segment Reporting Information [Line Items]
Revenue	59,977	39,092	166,372	66,058
Cost of goods sold	40,471	26,526	111,012	41,936
Selling, general and administrative expenses	16,012	10,043	49,464	19,276
Operating income (loss)	3,494	2,523	5,896	4,846
Canada Branch Division | Intersegment revenue elimination
Segment Reporting Information [Line Items]
Revenue	$ 62	$ 0	$ 71	$ 0