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Balance Sheet Details (Tables)

9 Months Ended

Oct. 02, 2021

Balance Sheet Related Disclosures [Abstract]

Summary of accounts receivable, net

Accounts receivable, net consisted of the following (in thousands):

						October 2, 2021						December 31, 2020
Accounts receivable						$	92,703					$	70,824
Allowance for doubtful accounts						(774)						(1,405)
						$	91,929					$	69,419

Summary of inventory

Inventory consisted of the following (in thousands):

						October 2, 2021						December 31, 2020
Raw materials						$	169					$	34
Finished goods						74,997						52,234
						$	75,166					$	52,268

Summary of property and equipment, net

Property and equipment, net consisted of the following (in thousands):

						October 2, 2021						December 31, 2020
Test equipment						$	38,876					$	37,670
Software						14,440						16,093
Computer equipment						10,594						9,062
Furniture and fixtures						1,733						2,069
Leasehold improvements						1,189						1,345
Total						66,832						66,239
Accumulated depreciation and amortization						(45,872)						(45,858)
						$	20,960					$	20,381

Schedule of other long-term assets

Other long-term assets consisted of the following (in thousands):

						October 2, 2021						December 31, 2020
Intangible asset						$	7,543					$	9,517
Other long-term assets						3,471						2,648
						$	11,014					$	12,165

Summary of accrued liabilities

Accrued liabilities consisted of the following (in thousands):

						October 2, 2021						December 31, 2020
Compensation and related benefits						$	14,261					$	23,740
Warranty and retrofit						10,126						9,208
Component inventory held by suppliers						4,606						3,992
Professional and consulting fees						4,595						4,497
Taxes payable						4,482						3,476
Current portion of revenue share obligations						4,397						2,925
Customer advances or rebates						4,358						8,374
Operating leases						3,151						2,994
Freight						2,587						1,955
Product returns						1,749						1,888
Operations						1,286						950
Other						5,846						4,737
						$	61,444					$	68,736

Product warranty activities

Changes in the Company’s accrued warranty and retrofit liability were as follows (in thousands):

						Three Months Ended												Nine Months Ended
						October 2, 2021						September 26, 2020						October 2, 2021						September 26, 2020
Balance at beginning of period						$	9,911					$	7,732					$	9,208					$	7,294
Provision for warranty and retrofit charged to cost of revenue						769						1,716						2,974						4,341
Utilization of reserve						(554)						(892)						(2,056)						(3,079)
Balance at end of period						$	10,126					$	8,556					$	10,126					$	8,556

Restructuring and related costs

The following table summarizes restructuring activities (in thousands):

						Facilities						Severance and Related Benefits						Total
Balance as of December 31, 2020						$	1,244					$	132					$	1,376
Cash payments						(193)						(132)						(325)
Balance as of October 2, 2021						$	1,051					$	—					$	1,051

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