Stockholders' Equity (Schedule of Changes in Accumulated Other Comprehensive Income by Component) (Details) - USD ($) $ in Thousands	9 Months Ended
Oct. 03, 2021	Sep. 27, 2020
Estimated tax benefit (provision)
Beginning balance	$ 9	$ 1
Other comprehensive income (loss) before reclassifications	53	115
Less: Amount reclassified from accumulated other comprehensive income (loss)	60	96
Net current period other comprehensive income (loss)	(7)	19
Ending balance	2	20
AOCI, after tax
Beginning balance	689,384	608,693
Other comprehensive income (loss) before reclassifications	(182)	(493)
Less: Amount reclassified from accumulated other comprehensive income (loss)	(228)	(360)
Net current period other comprehensive income (loss)	46	(133)
Ending balance	708,856	646,267
Unrealized gains (losses) on available-for-sale investments
AOCI, before tax
Beginning balance	(2)	(2)
Other comprehensive income (loss) before reclassifications	0	0
Less: Amount reclassified from accumulated other comprehensive income (loss)	0	0
Net current period other comprehensive income (loss)	0	0
Ending balance	(2)	(2)
Unrealized gains (losses) on derivatives
AOCI, before tax
Beginning balance	(42)	22
Other comprehensive income (loss) before reclassifications	(235)	(608)
Less: Amount reclassified from accumulated other comprehensive income (loss)	(288)	(456)
Net current period other comprehensive income (loss)	53	(152)
Ending balance	11	(130)
AOCI
AOCI, after tax
Beginning balance	(35)	21
Ending balance	$ 11	$ (112)

Accumulated other comprehensive income (loss), before tax.

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