Accumulated Other Comprehensive Income (Tables)

3 Months Ended

Apr. 01, 2017

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, 2016	$	4,852
Other comprehensive income before reclassifications		64
Amounts reclassified from accumulated other comprehensive income		-
Net current period other comprehensive income		64
Accumulated other comprehensive income balance as of April 1, 2017	$	4,916

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

		Gains Reclassified from
		Accumulated Other Comprehensive Income to the
		Consolidated Statements of Income
		13 Weeks Ended
(dollars in thousands)	Location	April 1, 2017		March 26, 2016
Unrealized gains on available-for-sale marketable securities
	Investment income	$	-	$	269
	Provision for income taxes		-		(111)
Total amount reclassified, net of tax		$	-	$	158