Segment Information - Reportable Segments by Geographic Area (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Assets	$ 1,727,255	$ 1,550,331
Long-lived assets	995,029	874,413
Capital expenditures	23,193	15,337	$ 8,307
Depreciation and amortization	74,376	63,588	45,186
Operating Segments | United States
Segment Reporting Information [Line Items]
Long-lived assets	818,100	765,160
Operating Segments | Canada
Segment Reporting Information [Line Items]
Long-lived assets	138,218	72,054
Operating Segments | Europe
Segment Reporting Information [Line Items]
Long-lived assets	30,345	32,997
Operating Segments | Pacific Rim
Segment Reporting Information [Line Items]
Long-lived assets	4,751	417
Operating Segments | Latin America
Segment Reporting Information [Line Items]
Long-lived assets	3,615	3,785
Operating Segments | Lawson
Segment Reporting Information [Line Items]
Assets	524,077	467,195
Capital expenditures	5,163	6,626	3,737
Depreciation and amortization	24,349	19,532	10,594
Operating Segments | TestEquity
Segment Reporting Information [Line Items]
Assets	654,315	638,950
Capital expenditures	12,692	2,955	250
Depreciation and amortization	30,799	26,002	17,480
Operating Segments | Gexpro Services
Segment Reporting Information [Line Items]
Assets	331,811	329,799
Capital expenditures	4,269	5,053	3,809
Depreciation and amortization	15,489	15,986	15,175
Operating Segments | Canada Branch Division
Segment Reporting Information [Line Items]
Assets	199,362	71,446
Capital expenditures	1,069	703	511
Depreciation and amortization	3,739	2,068	1,937
All Other
Segment Reporting Information [Line Items]
Assets	17,690	42,941
Capital expenditures	0	0	0
Depreciation and amortization	$ 0	$ 0	$ 0