	As of
	October 3, 2021		December 31, 2020
	(In thousands)
Raw materials	$	12,117	$	7,756
Finished goods		293,012		164,356
Total	$	305,129	$	172,112

The Company records provisions for excess and obsolete inventory based on assumptions about future demand and market conditions and the amounts incurred were $0.7 million and $3.0 million for the three and nine months ended October 3, 2021, respectively, and $1.8 million and $6.4 million for the three and nine months ended September 27, 2020, respectively. While management believes the estimates and assumptions underlying its current forecasts are reasonable, there is risk that additional charges may be necessary if current forecasts are greater than actual demand.

	As of
	October 3, 2021			December 31, 2020
	(In thousands)
Computer equipment	$	9,875		$	10,550
Furniture, fixtures and leasehold improvements		18,342			18,674
Software		30,155			29,499
Machinery and equipment		74,529			72,156
Total property and equipment, gross		132,901			130,879
Accumulated depreciation		(118,172	)		(114,799	)
Total	$	14,729		$	16,080

Depreciation expense pertaining to property and equipment was $2.8 million and $8.8 million for the three and nine months ended October 3, 2021, respectively, and $3.3 million and $9.5 million for the three and nine months ended September 27, 2020, respectively.

	As of October 3, 2021							As of December 31, 2020
	Gross		Accumulated Amortization			Net		Gross		Accumulated Amortization			Net
	(In thousands)
Technology	$	59,799	$	(58,156	)	$	1,643	$	59,799	$	(57,835	)	$	1,964
Customer contracts and relationships		56,800		(56,800	)		—		56,800		(55,534	)		1,266
Other		10,345		(9,996	)		349		10,345		(9,676	)		669
Total	$	126,944	$	(124,952	)	$	1,992	$	126,944	$	(123,045	)	$	3,899

Amortization of purchased intangibles was $0.2 million and $1.9 million for the three and nine months ended October 3, 2021, respectively, and $1.5 million and $4.7 million for the three and nine months ended September 27, 2020, respectively.

	As of
	October 3, 2021		December 31, 2020
	(In thousands)
Non-current deferred income taxes	$	63,479	$	68,323
Long-term investments		7,916		8,395
Other		5,091		6,032
Total	$	76,486	$	82,750

The Company's long-term investments are comprised of equity investments without readily determinable fair values, investments in convertible debt securities and investments in limited partnership funds. The changes in the carrying value of equity investments without readily determinable fair values during the periods represented were as follows:

	Nine Months Ended
	October 3, 2021			September 27, 2020
	(In thousands)
Carrying value as of the beginning of the period ⁽¹⁾	$	7,758		$	8,147
Additions from purchase of investments		340			5,850
Disposal		(778	)		—
Impairment		(549	)		(5,372	)
Carrying value as of the end of the period ⁽¹⁾	$	6,771		$	8,625

⁽¹⁾The balances excluded an investment in limited partnership funds of $0.8 million, $0.4 million and $0.6 million as of October 3, 2021, September 27, 2020 and December 31, 2020, respectively. Additionally, the balance as of October 3, 2021 excluded an investment in convertible debt securities of $0.3 million.

For the equity investments without readily determinable fair values as of October 3, 2021, cumulative downward adjustments for price changes and impairment was $8.4 million and cumulative upward adjustments for price changes was $0.2 million.

	As of
	October 3, 2021		December 31, 2020
	(In thousands)
Current operating lease liabilities	$	8,887	$	9,149
Sales and marketing		107,110		83,561
Warranty obligations		6,863		9,240
Sales returns⁽¹⁾		50,771		66,972
Freight and duty		15,600		14,885
Other		40,945		34,568
Total	$	230,176	$	218,375

⁽¹⁾Inventory expected to be received from future sales returns amounted to $24.8 million and $32.6 million as of October 3, 2021 and December 31, 2020, respectively. Provisions to write down expected returned inventory to net realizable value amounted to $15.3 million and $18.0 million as of October 3, 2021 and December 31, 2020, respectively.