SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Schedule of Estimated Useful Lives of Property and Equipment

Asset Category	Estimated Useful Lives
Buildings and leasehold improvements	3 to 39 Years
Computer equipment and capitalized software	2 to 3 Years
Furniture and other equipment	3 to 12 Years

	December 31,
	2018			2017
	(In thousands)
Property and equipment, net of accumulated depreciation and amortization:
Buildings and leasehold improvements	$	249,026		$	246,038
Computer equipment and capitalized software	229,083			218,529
Furniture and other equipment	86,694			88,930
Projects in progress	29,204			19,094
Land	11,591			14,390
Property and equipment	605,598			586,981
Accumulated depreciation and amortization	(286,798		)	(271,811		)
Property and equipment, net of accumulated depreciation and amortization	$	318,800		$	315,170

Schedule of New Accounting Pronouncements and Changes in Accounting Principles

The following table presents the impact of the adoption of ASU No. 2014-09 by segment under Accounting Standards Codification ("ASC") 606, Revenue from Contracts with Customers, as reported, and ASC 605, Revenue Recognition, for the year ended December 31, 2018.

	Under ASC 606 (as reported)			Under ASC 605			Effect of adoption of ASU No. 2014-09
	(In thousands)
Revenue by segment:
Match Group	$	1,729,850		$	1,729,850		$	—
ANGI Homeservices	1,132,241			1,132,241			—
Vimeo	159,641			160,931			(1,290		)
Dotdash	130,991			130,991			—
Applications	582,287			581,492			795
Emerging & Other	528,250			528,250			—
Inter-segment eliminations	(368		)	(368		)	—
Total	$	4,262,892		$	4,263,387		$	(495	)
Operating costs and expenses by segment:
Match Group	$	1,176,556		$	1,176,556		$	—
ANGI Homeservices	1,068,335			1,073,275			(4,940		)
Vimeo	195,235			196,212			(977		)
Dotdash	112,213			112,213			—
Applications	487,453			484,644			2,809
Emerging & Other	498,286			498,286			—
Corporate	159,675			159,675			—
Total	$	3,697,753		$	3,700,861		$	(3,108	)
Operating income (loss) by segment:
Match Group	$	553,294		$	553,294		$	—
ANGI Homeservices	63,906			58,966			4,940
Vimeo	(35,594		)	(35,281		)	(313		)
Dotdash	18,778			18,778			—
Applications	94,834			96,848			(2,014		)
Emerging & Other	29,964			29,964			—
Corporate	(160,043		)	(160,043		)	—
Total	$	565,139		$	562,526		$	2,613
Net earnings	$	757,747		$	755,741		$	2,006

Schedule of Cash, Cash Equivalents, and Restricted Cash

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the consolidated balance sheet to the total amounts shown in the consolidated statement of cash flows:

	December 31, 2018		December 31, 2017		December 31, 2016		December 31, 2015
	(In thousands)
Cash and cash equivalents	$	2,131,632	$	1,630,809	$	1,329,187	$	1,481,447
Restricted cash included in other current assets	1,633		2,873		20,464		126
Restricted cash included in other assets	420		—		10,548		20,100
Total cash, cash equivalents and restricted cash as shown on the consolidated statement of cash flows	$	2,133,685	$	1,633,682	$	1,360,199	$	1,501,673

Schedule of Cash, Cash Equivalents, and Restricted Cash

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the consolidated balance sheet to the total amounts shown in the consolidated statement of cash flows:

	December 31, 2018		December 31, 2017		December 31, 2016		December 31, 2015
	(In thousands)
Cash and cash equivalents	$	2,131,632	$	1,630,809	$	1,329,187	$	1,481,447
Restricted cash included in other current assets	1,633		2,873		20,464		126
Restricted cash included in other assets	420		—		10,548		20,100
Total cash, cash equivalents and restricted cash as shown on the consolidated statement of cash flows	$	2,133,685	$	1,633,682	$	1,360,199	$	1,501,673