GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

3 Months Ended

Mar. 31, 2020

GOODWILL AND OTHER INTANGIBLE ASSETS

Summary of changes in the goodwill balances

	December 31,		March 31,
	2019		2020
Balance beginning of period:
Goodwill	$	883,119	$	1,112,855
Cumulative impairment losses		(22,624)		(22,624)
		860,495		1,090,231
Goodwill acquired		229,799		26,545
Other		(63)		(4,996)
		229,736		21,549
Balance end of period:
Goodwill		1,112,855		1,134,404
Cumulative impairment losses		(22,624)		(22,624)
	$	1,090,231	$	1,111,780

Summary of amortizing acquired intangible assets

The following table summarizes the amortizing acquired intangible assets at December 31, 2019:

	Gross Carry		Accumulated		Net Book
	Amount		Amortization		Value
Customer relationships	$	1,362,104	$	(471,361)	$	890,743
Management contracts		150,464		(39,888)		110,576
Other acquired intangibles		5,157		(3,020)		2,137
Total	$	1,517,725	$	(514,269)	$	1,003,456

The following table summarizes the amortizing acquired intangible assets at March 31, 2020:

	Gross Carry		Accumulated		Net Book
	Amount		Amortization		Value
Customer relationships	$	1,390,984	$	(503,469)	$	887,515
Management contracts		151,010		(41,785)		109,225
Other acquired intangibles		5,351		(3,221)		2,130
Total	$	1,547,345	$	(548,475)	$	998,870