EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Basic earnings per share:
Weighted average shares outstanding (in shares)	15,868		17,211		15,998	17,402
Net income attributable to DXP Enterprises, Inc.	$ 16,693	$ 11,332	$ 19,054	$ 17,580	$ 28,025	$ 36,634
Convertible preferred stock dividend	22		22		45	45
Net income attributable to common shareholders	$ 16,671		$ 19,032		$ 27,980	$ 36,589
Per share amount (in dollars per share)	$ 1.05		$ 1.11		$ 1.75	$ 2.10
Diluted earnings per share:
Weighted average shares outstanding (in shares)	15,868		17,211		15,998	17,402
Assumed conversion of convertible preferred stock (in shares)	840		840		840	840
Total dilutive shares (in shares)	16,708		18,051		16,838	18,242
Net income attributable to common shareholders	$ 16,671		$ 19,032		$ 27,980	$ 36,589
Convertible preferred stock dividend	22		22		45	45
Net income attributable to DXP Enterprises, Inc.	$ 16,693		$ 19,054		$ 28,025	$ 36,634
Per share amount (in dollars per share)	$ 1.00		$ 1.06		$ 1.66	$ 2.01