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Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 28, 2019

Summary Of Significant Accounting Policies [Abstract]

Schedule Of Assets And Liabilities Measured At Fair Value

					Fair Value Measurements Using
		December 28,			Inputs
		2019			Level 1			Level 2			Level 3
Money market funds included in cash equivalents		$	180,032		$	180,032		$	—		$	—
Foreign currency contracts included in other current liabilities			(764)			—			(764)			—
		$	179,268		$	180,032		$	(764)		$	—
					Fair Value Measurements Using
		December 29,			Inputs
		2018			Level 1			Level 2			Level 3
Money market funds included in cash equivalents		$	129,449		$	129,449		$	—		$	—
Foreign currency contracts included in other current liabilities			(309)			—			(309)			—
		$	129,140		$	129,449		$	(309)		$	—

Schedule Of Contract Liabilities From Contract With Customers

		December 28,			December 29,
		2019			2018
Contract liabilities at beginning of period		$	15,055		$	14,417
Increase due to deferral of revenue at period end			13,852			15,055
Decrease due to beginning contract liabilities recognized as revenue			(15,055)			(14,417)
Contract liabilities at end of period		$	13,852		$	15,055

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Tabular disclosure of contract balances and changes in contract balances.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances.

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