The following tables summarize our cash and cash equivalents, and marketable securities on our Consolidated Balance Sheet as of December 31, 2022 and 2021 (in thousands):


									Reported as:
December 31, 2022	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Cash and Cash Equivalents		Marketable securities, short-term		Marketable securities, long-term
Cash	$	712,921	$	—	$	—	$	712,921	$	712,921	$	—	$	—
Money market funds	229,129		—		—		229,129		229,129		—		—
Corporate bonds	69,390		—		(2,915)		66,475		—		36,510		29,965
U.S. government treasury bonds	20,559		—		(549)		20,010		—		15,404		4,606
Asset-backed securities	4,514		1		(37)		4,478		—		2,909		1,569
Municipal bonds	3,447		—		(61)		3,386		—		2,711		675
U.S. government agency bonds	5,231		1		(69)		5,163		—		—		5,163

Total	$	1,045,191	$	2	$	(3,631)	$	1,041,562	$	942,050	$	57,534	$	41,978


									Reported as:
December 31, 2021	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Cash and Cash Equivalents		Marketable securities, short-term		Marketable securities, long-term
Cash	$	754,802	$	—	$	—	$	754,802	$	754,802	$	—	$	—
Money market funds	343,012		—		(2)		343,010		343,010		—		—
Corporate bonds	115,507		9		(398)		115,118		1,042		35,065		79,011
U.S. government treasury bonds	42,976		—		(48)		42,928		—		22,251		20,677
Asset-backed securities	32,031		—		(40)		31,991		—		10,999		20,992
Municipal bonds	7,628		—		(15)		7,613		516		3,657		3,440
U.S. government agency bonds	1,201		—		(1)		1,200		—		—		1,200

Total	$	1,297,157	$	9	$	(504)	$	1,296,662	$	1,099,370	$	71,972	$	125,320

The following table summarizes the fair value of our available-for-sale marketable securities classified by contractual maturity as of December 31, 2022 and 2021 (in thousands):

The securities that we invest in are generally deemed to be low risk based on their credit ratings from the major rating agencies. The longer the duration of these securities, the more susceptible they are to changes in market interest rates and bond yields. As interest rates increase, those securities purchased at a lower yield show a mark-to-market unrealized loss. Our unrealized losses as of December 31, 2022 and 2021 are primarily due to changes in interest rates and credit spreads.

The following table summarizes the gross unrealized losses as of December 31, 2022, aggregated by investment category and length of time that individual securities have been in a continuous loss position (in thousands):


	As of December 31, 2022
	Less than 12 months				12 Months of Greater				Total
December 31, 2022	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Corporate bonds	$	10,639	$	(440)	$	54,634	$	(2,475)		$	65,273	$	(2,915)
U.S. government treasury bonds	5,262		(177)		14,748		(372)			20,010		(549)
Asset-backed securities	2,636		(17)		1,275		(20)			3,911		(37)
Municipal bonds	—		—		2,412		(61)			2,412		(61)
U.S. government agency bonds	3,017		(5)		1,136		(64)			4,153		(69)

Total	$	21,554	$	(639)	$	74,205	$	(2,992)		$	95,759	$	(3,631)

After tendering of our SDC equity interest in 2019, on July 3, 2019, we filed a demand for arbitration regarding SDC’s calculation of the “capital account” balance. On March 12, 2021, the arbitrator ruled in our favor and against SDC and issued an award of $43.4 million along with interest. The gain of $43.4 million was recognized as a part of our other income (expense), net in our Consolidated Statement of Operation during the year ended December 31, 2021.


Description	Balance as of December 31, 2022		Level 1		Level 2
Cash equivalents:
Money market funds	$	229,129	$	229,129	$	—


Short-term investments:
U.S. government treasury bonds	15,404		15,404		—
Corporate bonds	36,510		—		36,510
Municipal bonds	2,711		—		2,711

Asset-backed securities	2,909		—		2,909
Long-term investments:
U.S. government treasury bonds	4,606		4,606		—
Corporate bonds	29,965		—		29,965
Municipal bonds	675		—		675
U.S. government agency bonds	5,163		—		5,163
Asset-backed securities	1,569		—		1,569




	$	328,641	$	249,139	$	79,502


Description	Balance as of December 31, 2021		Level 1		Level 2
Cash equivalents:
Money market funds	$	343,010	$	343,010	$	—
Corporate bonds	1,042		—		1,042
Municipal bonds	516		—		516
Short-term investments:
U.S. government treasury bonds	22,251		22,251		—
Corporate bonds	35,065		—		35,065
Municipal bonds	3,657		—		3,657
Asset-backed securities	10,999		—		10,999
Long-term investments:
U.S. government treasury bonds	20,677		20,677		—
Corporate bonds	79,011		—		79,011
Municipal bonds	3,440		—		3,440
U.S. government agency bonds	1,200		—		1,200
Asset-backed securities	20,992		—		20,992
Prepaid expenses and other current assets:
Israeli funds	3,841		—		3,841


	$	545,701	$	385,938	$	159,763

We enter into foreign currency forward contracts to minimize the short-term impact of foreign currency exchange rate fluctuations on certain trade and intercompany receivables and payables. These forward contracts are classified within Level 2 of the fair value hierarchy. As a result of the settlement of foreign currency forward contracts, the net gain recognized during the year ended December 31, 2022 was not material and we recognized a net gain of $18.8 million and a net loss of $22.1 million, during the year ended December 31, 2021 and 2020, respectively. As of December 31, 2022 and 2021, the fair value of foreign exchange forward contracts outstanding was not material.

The following tables presents the gross notional value of all our foreign exchange forward contracts outstanding as of December 31, 2022 and 2021 (in thousands):


	December 31, 2022
	Local Currency Amount	Notional Contract Amount (USD)
Euro	€186,900	$	200,010
Polish Zloty	PLN365,988	83,307
Canadian Dollar	C$109,000	80,514
Chinese Yuan	¥471,000	68,223
British Pound	£41,200	49,677
Japanese Yen	¥6,200,000	47,196
Israeli Shekel	ILS110,030	31,383
Swiss Franc	CHF25,000	27,165
Brazilian Real	R$141,200	26,839
Mexican Peso	M$230,000	11,746
New Zealand Dollar	NZ$6,000	3,806
Australian Dollar	A$4,000	2,721
Czech Koruna	Kč56,000	2,469
New Taiwan Dollar	NT$60,000	1,959
		$	637,015


	December 31, 2021
	Local Currency Amount	Notional Contract Amount (USD)
Euro	€165,110	$	186,358
Canadian Dollar	C$99,800	78,018
Chinese Yuan	¥494,500	77,358
Polish Zloty	PLN219,800	54,014
Brazilian Real	R$286,500	50,894
Japanese Yen	¥5,548,700	48,206
British Pound	£34,740	46,881
Israeli Shekel	ILS54,110	17,416
Mexican Peso	M$311,500	15,133
Swiss Franc	CHF9,950	10,883
Australian Dollar	A$6,900	5,009
		$	590,170

Prior to the closing of the exocad acquisition on April 1, 2020, we entered into a Euro foreign currency forward contract with a notional contract amount of €376.0 million. Relating to this forward contract, in 2020, we recognized a loss of $10.2 million within other income (expense), net in our Consolidated Statement of Operations.