Segment Reporting - Reportable Segment Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) branch reportable_segment	Sep. 30, 2021 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | reportable_segment			3
Number of branches | branch			14
Segment Reporting Information [Line Items]
Revenue	$ 347,151	$ 132,090	$ 822,572	$ 391,069
Operating income (loss)	22,027	5,491	29,128	13,212
All Other
Segment Reporting Information [Line Items]
Revenue	17,275	0	33,612	0
Operating income (loss)	1,107	0	1,921	0
Lawson | Operating Segments
Segment Reporting Information [Line Items]
Revenue	109,418	0	216,752	0
Operating income (loss)	5,352	0	2,792	0
TestEquity | Operating Segments
Segment Reporting Information [Line Items]
Revenue	116,709	67,826	286,984	201,457
Operating income (loss)	7,576	1,054	7,443	(308)
Gexpro Services | Operating Segments
Segment Reporting Information [Line Items]
Revenue	103,749	64,264	285,224	189,612
Operating income (loss)	$ 7,992	$ 4,437	$ 16,972	$ 13,520