Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Schedule of Estimated Useful Lives of Long-Lived Assets

Long-lived assets are depreciated or amortized over their estimated useful lives which are as follows:

Building	40 years
Computer equipment	2 to 5 years
Furniture, fixtures, and other assets	5 years
Leasehold improvements	Shorter of remaining lease term or 5 years
Purchased software	3 years
Capitalized internal-use software	3 years
Acquisition intangible assets: customer relationships	5 to 7 years
Acquisition intangible assets: trade name	2 to 10 years
Acquisition intangible assets: technology	3 to 8 years

Components of Other Non-Operating Income (Expense) Recognized in Condensed Consolidated Financial Statements

The components of other non-operating income (expense) recognized in the consolidated financial statements is as follows:

	Year Ended December 31,
(in thousands)	2018			2017			2016
Interest Income	$	1,161		$	59		$	20
Foreign currency gains (losses), net		(1,460	)		85			(1,395	)
Currency translation adjustment upon subsidiary liquidation		—			—			(1,397	)
Gain on sale of a private company investment		999			6,750			—
Loss on debt modification / extinguishment		(941	)		(194	)		—
Other income (expense), net		(57	)		910			(1,478	)
Other non-operating income (expense), net	$	(298	)	$	7,610		$	(4,250	)