GOODWILL (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill [Abstract]

Schedule of goodwill

The changes in the carrying amount of goodwill by operating segment consist of the following (in thousands):

	North America		International			Total
Goodwill, December 31, 2016	$	1,227,777	$	27,089		$	1,254,866
Acquisition	25,717		—			25,717
Effect of foreign currency translation	—		2,874			2,874
Goodwill, December 31, 2017	1,253,494		29,963			1,283,457
Acquisitions	319,594		10,344			329,938
Effect of foreign currency translation	—		(1,860		)	(1,860		)
Goodwill, December 31, 2018	$	1,573,088	$	38,447		$	1,611,535