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

6 Months Ended

Jun. 30, 2021

Cash Cash Equivalents And Short Term Investments [Abstract]

Reconciliation of Cash, Cash Equivalents and Restricted Cash

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the condensed consolidated balance sheets that sum to the total of the same amounts shown in the condensed consolidated statements of cash flows (in thousands):

	June 30, 2021		December 31, 2020		June 30, 2020		December 31, 2019
Cash and cash equivalents	$	129,608	$	32,073	$	60,485	$	39,884
Restricted cash		229		237		217		216
Total cash, cash equivalents and restricted cash shown in the condensed consolidated statements of cash flows	$	129,837	$	32,310	$	60,702	$	40,100

Summary of Cash, Cash Equivalents and Marketable Securities

Cash, cash equivalents and marketable securities consist of the following (in thousands):

	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value
June 30, 2021
Cash and cash equivalents:
Cash	$	17,008	$	-	$	-		$	17,008
Money market funds		112,600		-		-			112,600
Total cash and cash equivalents		129,608		-		-			129,608
Marketable securities available-for-sale:
U.S. treasuries		23,347		5		-			23,352
U.S. government agency securities		41,715		10		-			41,725
Corporate debt securities		151,074		45		-			151,119
Total marketable securities available-for-sale		216,136		60		-			216,196
Total cash, cash equivalents and marketable securities	$	345,744	$	60	$	-		$	345,804
December 31, 2020
Cash and cash equivalents:
Cash	$	7,945	$	-	$	-		$	7,945
Money market funds		23,128		-		-			23,128
Corporate debt securities		1,000		-		-			1,000
Total cash and cash equivalents		32,073		-		-			32,073
Marketable securities available-for-sale:
U.S. treasuries		32,548		31		-			32,579
U.S. government agency securities		40,313		14		(6	)		40,321
Corporate debt securities		60,071		3		(11	)		60,063
Total marketable securities available-for-sale		132,932		48		(17	)		132,963
Total cash, cash equivalents and marketable securities	$	165,005	$	48	$	(17	)	$	165,036

Maturities of Marketable Securities Available-for-Sale

The maturities of our marketable securities available-for-sale are as follows (in thousands):

	June 30, 2021
	Amortized Cost		Estimated Fair Value
Mature in one year or less	$	214,386	$	214,446
Mature after one year through two years		1,750		1,750
	$	216,136	$	216,196