CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES

12 Months Ended

Dec. 31, 2020

Cash And Cash Equivalents [Abstract]

CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES

6. CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES

The following table summarizes the Company’s financial assets with maturities of less than 90 days from the date of purchase included in cash equivalents in the consolidated balance sheets for each of the periods indicated:

	As of December 31,
	2020		2019
	(in thousands)
Money market funds	$	629,440	$	203,410
Government and government agency bonds		602,058		519,491
Total	$	1,231,498	$	722,901

It is the Company’s policy to mitigate credit risk in its financial assets by maintaining a well-diversified portfolio that limits the amount of exposure as to maturity and investment type. The weighted average maturity of the Company’s available-for-sale securities as of December 31, 2020 and 2019 was approximately two months. The following tables summarize the Company’s cash, cash equivalents and investments for each of the periods indicated:

	As of December 31, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Market Value
	(in thousands)
Cash and money market funds	$	900,590	$	—	$	—		$	900,590
Government and government agency bonds		1,037,959		22		—			1,037,981
Total cash, cash equivalents and investments	$	1,938,549	$	22	$	—		$	1,938,571
As reported:
Cash and cash equivalents	$	1,502,639	$	9	$	—		$	1,502,648
Short-term investments		435,910		13		—			435,923
Total cash, cash equivalents and investments	$	1,938,549	$	22	$	—		$	1,938,571
	As of December 31, 2019
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Market Value
	(in thousands)
Cash and money market funds	$	315,589	$	—	$	—		$	315,589
Government and government agency bonds		809,090		71		(2	)		809,159
Total cash, cash equivalents and investments	$	1,124,679	$	71	$	(2	)	$	1,124,748
As reported:
Cash and cash equivalents	$	835,044	$	36	$	—		$	835,080
Short-term investments		289,635		35		(2	)		289,668
Total cash, cash equivalents and investments	$	1,124,679	$	71	$	(2	)	$	1,124,748