Marketable Securities (Tables)

12 Months Ended

Dec. 27, 2014

Marketable Securities [Abstract]

Marketable securities [Table Text Block]

Marketable securities, as of December 27, 2014 and December 28, 2013, consisted of:

			Gross		Gross
(dollars in thousands)	Amortized		Unrealized		Unrealized		Fair
December 27, 2014	Cost		Holding Gains		Holding Losses		Value
Available-for-sale:
Level 1
Equity securities	$	1,198	$	6,683	$	-	$	7,881
Level 2
Municipal bonds		64,561		1,613		(96)		66,078
	$	65,759	$	8,296	$	(96)	$	73,959

			Gross		Gross
(dollars in thousands)	Amortized		Unrealized		Unrealized		Fair
December 28, 2013	Cost		Holding Gains		Holding Losses		Value
Available-for-sale:
Level 1
Equity securities	$	970	$	7,239	$	-	$	8,209
Level 2
Municipal bonds		55,431		686		(1,233)		54,884
	$	56,401	$	7,925	$	(1,233)	$	63,093

Maturities of marketable securities classified as available-for-sale [Table Text Block]

Maturities of marketable securities classified as available-for-sale at December 27, 2014, were as follows:

		Amortized		Fair
(dollars in thousands)		Cost		Value
Available-for-sale:
Due within one year	$	1,875	$	1,912
Due after one year through five years		46,613		47,740
Due after five years through ten years		16,073		16,426
Equity securities		1,198		7,881
	$	65,759	$	73,959