EARNINGS PER SHARE DATA (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Basic:
Weighted average shares outstanding (in shares)	18,710	17,790	19,060	17,743
Net income attributable to DXP Enterprises, Inc.	$ 7,125	$ (34,666)	$ 15,615	$ (26,187)
Convertible preferred stock dividend	23	23	68	68
Net income (loss) attributable to common shareholders	$ 7,102	$ (34,689)	$ 15,547	$ (26,255)
Per share amount (in dollars per share)	$ 0.38	$ (1.95)	$ 0.82	$ (1.47)
Diluted:
Weighted average shares outstanding (in shares)	18,710	17,790	19,060	17,743
Assumed conversion of convertible preferred stock (in shares)	840	0	840	0
Diluted (in shares)	19,550	17,790	19,900	17,743
Net income (loss) attributable to common shareholders	$ 7,102	$ (34,689)	$ 15,547	$ (26,255)
Convertible preferred stock dividend	23	0	68	0
Net income attributable to DXP Enterprises, Inc.	$ 7,125	$ (34,689)	$ 15,615	$ (26,255)
Diluted (in dollars per share)	$ 0.36	$ (1.95)	$ 0.78	$ (1.47)