Balance Sheet Components (Tables)

12 Months Ended

Dec. 28, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Short-Term Marketable Securities

The following table summarizes the maturities of our formerly-held Short-term marketable securities at fair value.

(In thousands)	December 28, 2019		December 29, 2018
Short-term marketable securities:
Maturing within one year	$	—	$	7,454
Maturing between one and two years	—		2,170
Total marketable securities	$	—	$	9,624

Schedule of Accounts Receivable

(In thousands)	December 28, 2019			December 29, 2018
Accounts receivable	$	65,023		$	61,087
Less: Allowance for doubtful accounts	(106		)	(197		)
Accounts receivable, net of allowance for doubtful accounts	$	64,917		$	60,890

Schedule of Allowance for Doubtful Accounts

The following table displays the activity related to changes in our allowance for doubtful accounts:

Fiscal Years Ended (In thousands)	Balance at beginning of period		Charged (Credit) to costs and expenses			Charged (credit) to other accounts			Settlements & write-offs net of recoveries			Balance at end of period
Allowance for doubtful accounts
December 28, 2019	$	197	$	(30	)	$	(12	)	$	(49	)	$	106
December 29, 2018	$	9,371	$	1		$	73		$	(9,248	)	$	197
December 30, 2017	$	9,299	$	3		$	38		$	31		$	9,371

The following table displays the activity related to changes in our valuation allowance for deferred tax assets:

Fiscal Years Ended (In thousands)	Balance at beginning of period		Charged (Credit) to costs and expenses			Charged (credit) to other accounts			Balance at end of period
Valuation allowance for deferred tax assets
December 28, 2019	$	207,108	$	(8,609	)	$	—		$	198,499
December 29, 2018	$	209,691	$	(2,583	)	$	—		$	207,108
December 30, 2017	$	260,687	$	(50,960	)	$	(36	)	$	209,691

Schedule of Inventories

(In thousands)	December 28, 2019		December 29, 2018
Work in progress	$	39,855	$	47,224
Finished goods	15,125		19,872
Total inventories	$	54,980	$	67,096

Schedule of Accounts Payable and Accrued Expenses

Included in Accounts payable and accrued expenses in the Consolidated Balance Sheets are the following balances:

(In thousands)	December 28, 2019		December 29, 2018
Trade accounts payable	$	44,350	$	31,880
Liability for non-cancelable contracts	6,964		6,078
Restructuring	3,060		4,220
Other accrued expenses	5,881		9,585
Total accounts payable and accrued expenses	$	60,255	$	51,763