Accumulated Other Comprehensive Income (Tables)

9 Months Ended

Sep. 28, 2013

Accumulated Other Comprehensive Income [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

		Unrealized Gains on
		Available-for-Sale
(dollars in thousands)		Marketable Securities
Accumulated other comprehensive income balance as of December 29, 2012	$	5,019
Other comprehensive loss before reclassifications		(512	)
Amounts reclassified from accumulated other comprehensive income		(963	)
Net current period other comprehensive loss		(1,475	)
Accumulated other comprehensive income balance as of September 28, 2013	$	3,544

Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]

		Gains (Losses) Reclassified from
		Accumulated Other Comprehensive
		Income to the Consolidated
		Statements of Income
		13 Weeks Ended					39 Weeks Ended
(dollars in thousands)	Location	Sept. 28, 2013			Sept. 29, 2012		Sept. 28, 2013			Sept. 29, 2012
Unrealized gains on available-for-sale marketable securities	Investment income	$	364		$	---	$	1,734		$	708
	Provision for income taxes		(162	)		---		(771	)		(314	)
Total amount reclassified, net of tax		$	202		$	---	$	963		$	394