EARNINGS PER SHARE DATA (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Basic:
Weighted average shares outstanding (in shares)	17,566	17,901
Net income attributable to DXP Enterprises, Inc.	$ 7,291	$ 4,551
Convertible preferred stock dividend	23	23
Net income attributable to common shareholders	$ 7,268	$ 4,528
Per share amount (in dollars per share)	$ 0.41	$ 0.25
Diluted:
Weighted average shares outstanding (in shares)	17,566	17,901
Assumed conversion of convertible preferred stock (in shares)	840	840
Total dilutive shares (in shares)	18,406	18,741
Net income attributable to common shareholders	$ 7,268	$ 4,528
Net income attributable to DXP Enterprises, Inc.	$ 7,291	$ 4,551
Per share amount (in dollars per share)	$ 0.40	$ 0.24