Cash, Cash Equivalents, Restricted Cash and Marketable Securities

12 Months Ended

Dec. 31, 2022

Investments, Debt and Equity Securities [Abstract]

Cash, Cash Equivalents, Restricted Cash and Marketable Securities

Cash and Cash Equivalents, Restricted Cash and Marketable Securities

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


	December 31
	2022		2021		2020
Cash and cash equivalents	$	202,004	$	436,189	$	32,073
Restricted cash		207		219		237
Total cash and cash equivalents, and restricted cash shown in the consolidated statements of cash flows	$	202,211	$	436,408	$	32,310

Restricted cash balances relate to certificates of deposit issued as collateral to certain letters of credit issued as security to our lease arrangements (See Note 8).

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


	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value
December 31, 2022
Cash and cash equivalents:
Cash	$	29,586	$	-	$	-		$	29,586
Money market funds		172,418		-		-			172,418
Total cash and cash equivalents		202,004		-		-			202,004
Marketable securities available-for-sale:
U.S. treasuries		42,502		-		(194	)		42,308
U.S. government agency securities		88,429		-		(397	)		88,032
Corporate debt securities		292,865		12		(826	)		292,051
Total marketable securities available-for-sale		423,796		12		(1,417	)		422,391
Total cash and cash equivalents, and marketable securities	$	625,800	$	12	$	(1,417	)	$	624,395
December 31, 2021
Cash and cash equivalents:
Cash	$	6,995	$	-	$	-		$	6,995
Money market funds		429,194		-		-			429,194
Total cash and cash equivalents		436,189		-		-			436,189
Marketable securities available-for-sale:
U.S. treasuries		4,005		-		(1	)		4,004
U.S. government agency securities		26,555		-		(7	)		26,548
Corporate debt securities		79,200		9		-			79,209
Total marketable securities available-for-sale		109,760		9		(8	)		109,761
Total cash and cash equivalents, and marketable securities	$	545,949	$	9	$	(8	)	$	545,950

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


.	December 31, 2022
	Amortized Cost		Estimated Fair Value
Mature in one year or less	$	367,013	$	365,709
Mature after one year through two years		56,783		56,682
	$	423,796	$	422,391

There were no realized gains or losses from the sale of marketable securities for each of the years ended December 31, 2022 and 2021. There were no investments with unrealized losses longer than 12 months as of December 31, 2022. We do not intend to sell, and are not required to sell, the investments that are in an unrealized loss position before recovery of their amortized cost basis. As such, there have been no declines in fair value that have been identified as other than temporary.