CASH FLOW INFORMATION (Tables)

6 Months Ended

Jun. 30, 2019

CASH FLOW INFORMATION

Schedule of supplemental cash flow information

	Six Months Ended
	June 30,
	2018		2019
Supplemental disclosures of cash flow information—cash paid for:
Interest	$	32,655	$	25,904
Income taxes	$	2,922	$	3,356
Supplemental non-cash cash flow information:
Fair market value of estimated contingent consideration in connection with acquisitions	$	21,878	$	50,945
Fair market value of restricted common units in connection with acquisitions and contingent consideration	$	32,829	$	—
Net tangible assets (liabilities) acquired in connection with business acquisitions	$	684	$	(3,888)
Deferred taxes and tax receivable agreements	$	—	$	250
Right of use asset related to operating leases	$	—	$	168,867
Lease liability related to operating leases	$	—	$	180,451