EARNINGS PER SHARE DATA (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Basic:
Weighted average shares outstanding (in shares)	17,596	17,558	17,581	17,538
Net income attributable to DXP Enterprises, Inc.	$ 13,459	$ 11,562	$ 20,750	$ 16,113
Convertible preferred stock dividend	22	22	45	45
Net income attributable to common shareholders	$ 13,437	$ 11,540	$ 20,705	$ 16,068
Per share amount (in dollars per share)	$ 0.76	$ 0.66	$ 1.18	$ 0.92
Diluted:
Weighted average shares outstanding (in shares)	17,596	17,558	17,581	17,538
Assumed conversion of convertible preferred stock (in shares)	840	840	840	840
Total dilutive shares (in shares)	18,436	18,398	18,421	18,378
Net income attributable to common shareholders	$ 13,437	$ 11,540	$ 20,705	$ 16,068
Net income attributable to DXP Enterprises, Inc.	$ 13,459	$ 11,562	$ 20,750	$ 16,113
Per share amount (in dollars per share)	$ 0.73	$ 0.63	$ 1.13	$ 0.88