GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

6 Months Ended

Jun. 30, 2019

GOODWILL AND OTHER INTANGIBLE ASSETS

Summary of changes in the goodwill balances

	December 31,		June 30,
	2018		2019
Balance beginning of period:
Goodwill	$	538,113	$	883,119
Cumulative impairment losses		(22,624)		(22,624)
		515,489		860,495
Goodwill acquired		347,496		128,391
Other		(2,490)		(180)
		345,006		128,211
Balance end of period:
Goodwill		883,119		1,011,330
Cumulative impairment losses		(22,624)		(22,624)
	$	860,495	$	988,706

Summary of amortizing acquired intangible assets

The following table summarizes the amortizing acquired intangible assets at December 31, 2018:

	Gross Carry		Accumulated		Net Book
	Amount		Amortization		Value
Customer relationships	$	1,008,186	$	(349,125)	$	659,061
Management contracts		133,112		(31,911)		101,201
Other intangibles		4,402		(2,469)		1,933
Total	$	1,145,700	$	(383,505)	$	762,195

The following table summarizes the amortizing acquired intangible assets at June 30, 2019:

	Gross Carry		Accumulated		Net Book
	Amount		Amortization		Value
Customer relationships	$	1,209,291	$	(404,967)	$	804,324
Management contracts		142,319		(35,735)		106,584
Other intangibles		5,031		(2,829)		2,202
Total	$	1,356,641	$	(443,531)	$	913,110