Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Summary of Estimated Useful Lives of Intangible Assets

The estimated useful lives of intangible assets are as follows:

Intangible Asset		Estimated Useful Life
Domain names		5 Years
Trademarks		1 to 5 Years
Acquired developed technology		4 to 7 Years
Customer relationships		2 to 5 Years
Patents		3 to 11 Years

Intangible assets consisted of the following:

	December 31, 2020
	Weighted- Average Remaining Useful Life - Years				Gross Carrying Amount				Accumulated Amortization				Net
	(in thousands, except years)
Domain names		1.6			$	414			$	283			$	131
Acquired developed technology		3.2				206,197				111,129				95,068
Patents		4.9				19,860				9,130				10,730
					$	226,471			$	120,542			$	105,929

	December 31, 2019
	Weighted- Average Remaining Useful Life - Years				Gross Carrying Amount				Accumulated Amortization				Net
	(in thousands except years)
Domain names		2.6			$	5,414			$	5,200			$	214
Trademarks		—				3,072				3,072				—
Acquired developed technology		3.6				175,414				95,921				79,493
Customer relationships		—				2,172				2,172				—
Patents		5.9				19,710				7,296				12,414
					$	205,782			$	113,661			$	92,121