Stockholders' Equity (Schedule Of Changes in Accumulated Other Comprehensive Income by Component Net of Tax) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 29, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ 4
Other comprehensive (loss) income before reclassifications	310
Amounts reclassified from accumulated other comprehensive income (loss)	(465)
Net current period other comprehensive loss	(155)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(151)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax	28
Other comprehensive (loss) income before reclassifications	(9)
Amounts reclassified from accumulated other comprehensive income (loss)	0
Net current period other comprehensive loss	(9)
Accumulated Other Comprehensive Income (Loss), Net of Tax	19
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(24)
Other comprehensive (loss) income before reclassifications	319
Amounts reclassified from accumulated other comprehensive income (loss)	(465)
Net current period other comprehensive loss	(146)
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (170)