CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended						12 Months Ended			36 Months Ended
	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss) attributable to DXP Enterprises, Inc.	$ (1,900)	$ 5,700	$ 2,200	$ 7,300	$ 11,100	$ 4,600	$ (28,726)	$ 36,035	$ 35,632
Less: net loss attributable to non-controlling interest							(348)	(260)	(111)
Net income (loss)	(2,000)	5,700	2,100	7,300	11,100	4,500	(29,074)	35,775	35,521
Reconciliation of net income (loss) to net cash provided by operating activities:
Depreciation							10,396	10,100	9,578
Impairment and other charges							59,883	0	0
Amortization of intangible assets							12,287	15,074	16,586
Bad debt expense							1,194	139	2,368
Payment of contingent consideration liability in excess of acquisition-date fair value							(136)	(106)	0
Amortization of debt issuance costs							1,875	1,875	1,743
Fair value adjustment on contingent consideration							(395)	54	313
Loss on extinguishment and modification of debt							2,288	0	60
Gain on sale of property and equipment							0	(9)	(1,330)
Stock compensation expense							3,532	1,963	2,549
Deferred income taxes							(14,771)	1,110	1,004
Changes in operating assets and liabilities
Trade accounts receivable							42,909	5,560	(22,487)
Costs and estimated profits in excess of billings							14,009	92	(5,640)
Inventories							22,208	(14,447)	(20,838)
Prepaid expenses and other assets							13,053	5,110	188
Accounts payable and accrued expenses							(14,897)	(15,408)	7,093
Billings in excess of costs & estimated profits							(7,816)	1,142	6,522
Other long-term liabilities							(8,870)	(6,718)	2,610
Net cash provided by operating activities							107,675	41,306	35,840
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment							(6,672)	(22,120)	(9,323)
Proceeds from the sale of property and equipment							123	35	2,558
Acquisition of businesses							(115,247)	0	(10,811)
Net cash used in investing activities							(121,796)	(22,085)	(17,576)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from debt							330,000	0	0
Principal debt payments							(244,375)	(4,341)	(3,381)
Debt issuance costs							(7,268)	0	(60)
Issuance of Common Stock- shares sold in public market							1,142	0	0
Payment for contingent consideration liability							(1,864)	(1,394)	0
Non-controlling interest holder contributions (distributions), net of tax benefits							0	0	950
Preferred dividends paid							(90)	(90)	(90)
Payment for employee taxes withheld from stock awards							(139)	(267)	(340)
Net cash provided by (used in) financing activities							77,406	(6,092)	(2,921)
Effect of foreign currency on cash							(168)	679	(403)
Net Change In Cash							63,117	13,808	14,940
Cash, cash equivalents and restricted cash at Beginning of Year		$ 54,327		$ 40,519		$ 25,579	54,327	40,519	25,579	$ 25,579
Cash, cash equivalents and restricted cash at End of Year	$ 117,444		$ 54,327		$ 40,519		117,444	54,327	40,519	$ 117,444
SUPPLEMENTAL CASH FLOW INFORMATION:
Cash paid for interest							13,321	17,623	19,134
Cash paid for income taxes							$ 6,277	$ 13,318	$ 8,301