EARNINGS PER SHARE DATA (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Basic:
Weighted average shares outstanding (in shares)	17,602	17,564	17,588	17,547
Net income attributable to DXP Enterprises, Inc.	$ 13,109	$ 8,397	$ 33,859	$ 24,510
Convertible preferred stock dividend	23	23	68	68
Net income attributable to common shareholders	$ 13,086	$ 8,374	$ 33,791	$ 24,442
Per share amount (in dollars per share)	$ 0.74	$ 0.48	$ 1.92	$ 1.39
Diluted:
Weighted average shares outstanding (in shares)	17,602	17,564	17,588	17,547
Assumed conversion of convertible preferred stock (in shares)	840	840	840	840
Total dilutive shares (in shares)	18,442	18,404	18,428	18,387
Net income attributable to common shareholders	$ 13,086	$ 8,374	$ 33,791	$ 24,442
Net income attributable to DXP Enterprises, Inc.	$ 13,109	$ 8,397	$ 33,859	$ 24,510
Per share amount (in dollars per share)	$ 0.71	$ 0.46	$ 1.84	$ 1.33