Cash, Cash Equivalents, Marketable Securities, and Restricted Cash (Tables)

9 Months Ended

Sep. 30, 2020

Cash, Cash Equivalents, and Short-term Investments [Abstract]

Schedule of cash, cash equivalents and marketable securities

Cash, cash equivalents and marketable securities are classified as current unless mentioned otherwise below and consisted of the following:

	As of September 30, 2020
(in thousands)	Cost		Gross Unrealized Gain		Gross Unrealized Loss		Fair Value
Cash and cash equivalents	$	210,631	$	—	$	—	$	210,631
Corporate debt securities	66,055		60		(5)		66,110
Commercial paper	195,030		36		(12)		195,054
Asset-backed securities	16,541		61		—		16,602
U.S. government agency bonds	20,282		2		—		20,284
Money market	350		—		—		350
Certificates of deposit	51		—		—		51
	$	508,940	$	159	$	(17)	$	509,082
Included in cash and cash equivalents	$	210,631	$	—	$	—	$	210,631
Included in marketable securities	298,309		159		(17)		298,451
Total cash, cash equivalents, and marketable securities	$	508,940	$	159	$	(17)	$	509,082

	As of December 31, 2019
(in thousands)	Cost		Gross Unrealized Gain		Gross Unrealized Loss		Fair Value
Cash and cash equivalents	$	142,837	$	—	$	—	$	142,837
Corporate debt securities	145,875		121		(5)		145,991
Commercial paper	73,659		53		(2)		73,710
Asset-backed securities	77,731		79		—		77,810
U.S. government agency bonds	11,999		2		(10)		11,991
Money market	350		—		—		350
Certificates of deposit	51		—		—		51
	$	452,502	$	255	$	(17)	$	452,740
Included in cash and cash equivalents	$	142,837	$	—	$	—	$	142,837
Included in marketable securities(1)	309,665		255		(17)		309,903
Total cash, cash equivalents, and marketable securities	$	452,502	$	255	$	(17)	$	452,740

______________________________

(1) As of December 31, 2019, $9.5 million of marketable securities have maturity dates greater than 12 months and are available to convert into cash, if needed.

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 Sheets that sum to the total of the same such amounts shown in the Consolidated Statements of Cash Flows.

(in thousands)	September 30, 2020		September 30, 2019
Cash and cash equivalents	$	210,631	$	166,319
Restricted cash	2,794		3,382
Cash, cash equivalents, and restricted cash shown in the Consolidated Statements of Cash Flows	$	213,425	$	169,701