Accumulated Other Comprehensive Income (Tables)

12 Months Ended

Dec. 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 31, 2011	$	5,448
Other comprehensive loss before reclassifications		(9)
Amounts reclassified from accumulated other comprehensive income		(420)
Net current period other comprehensive loss		(429)
Accumulated other comprehensive income balance as of December 29, 2012	$	5,019
Other comprehensive loss before reclassifications		(36)
Amounts reclassified from accumulated other comprehensive income		(1,044)
Net current period other comprehensive loss		(1,080)
Accumulated other comprehensive income balance as of December 28, 2013	$	3,939

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

		Gains (Losses) Reclassified from
		Accumulated Other Comprehensive Income to the
		Consolidated Statements of Income
(dollars in thousands)	Location		2013		2012		2011
Unrealized gains on available-for-sale marketable securities
	Investment income	$	1,774	$	713	$	1,447
	Provision for income taxes		(730)		(293)		(601)
Total amount reclassified, net of tax		$	1,044	$	420	$	846