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

9 Months Ended

Sep. 30, 2020

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):

	September 30, 2020		December 31, 2019		September 30, 2019		December 31, 2018
Cash and cash equivalents	$	32,688	$	39,884	$	37,297	$	49,348
Restricted cash		226		216		619		619
Total cash, cash equivalents and restricted cash shown in the condensed consolidated statements of cash flows	$	32,914	$	40,100	$	37,916	$	49,967

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
September 30, 2020
Cash and cash equivalents:
Cash	$	2,998	$	-	$	-		$	2,998
Money market funds		25,138		-		-			25,138
Corporate debt securities		4,552		-		-			4,552
Total cash and cash equivalents		32,688		-		-			32,688
Marketable securities available-for-sale:
U.S. treasuries		30,622		51		-			30,673
U.S. government agency securities		48,408		11		(2	)		48,417
Corporate debt securities		65,362		22		(1	)		65,383
Total marketable securities available-for-sale		144,392		84		(3	)		144,473
Total cash, cash equivalents and marketable securities	$	177,080	$	84	$	(3	)	$	177,161
December 31, 2019
Cash and cash equivalents:
Cash	$	4,038	$	-	$	-		$	4,038
Money market funds		27,854		-		-			27,854
Corporate debt securities		7,992		-		-			7,992
Total cash and cash equivalents		39,884		-		-			39,884
Marketable securities available-for-sale:
U.S. treasuries		6,511		6		-			6,517
U.S. government agency securities		51,235		50		(12	)		51,273
Corporate debt securities		53,353		28		-			53,381
Total marketable securities available-for-sale		111,099		84		(12	)		111,171
Total cash, cash equivalents and marketable securities	$	150,983	$	84	$	(12	)	$	151,055

Maturities of Marketable Securities Available-for-Sale

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

	September 30, 2020
	Amortized Cost		Estimated Fair Value
Mature in one year or less	$	108,016	$	108,093
Mature after one year through two years		36,376		36,380
	$	144,392	$	144,473