CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Business Acquisitions:
Fair value of tangible assets acquired		$ 19,709	$ 1,420
Fair value of accounts receivable		5,075	1,267
Fair value of other assets		1,718	183
Liabilities assumed		(7,698)	(3,662)
Fair value of stock issued		(247,575)	(14,135)
Cost in excess of fair value of assets acquired (Goodwill)		265,519	46,505
Acquired identifiable intangible assets		120,080	19,829
Deferred tax liabilities, net		(43,608)	(5,841)
Business Combination Considerations Transferred Net		113,220	45,566
Less accrued contingent consideration			(952)
Less working capital adjustment		(425)
Net cash paid for business acquisitions		$ 112,795	$ 44,614

Business acquisition working capital adjustments.

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Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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Amount of liability recognized arising from contingent consideration in a business combination.

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Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of deferred tax liability attributable to taxable temporary differences assumed at the acquisition date.

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