Marketable Securities (Tables)

3 Months Ended

Mar. 28, 2015

Marketable Securities [Abstract]

Marketable securities [Table Text Block]

Marketable securities, as of March 28, 2015 and December 27, 2014, consisted of:

			Gross		Gross
(dollars in thousands)	Amortized		Unrealized		Unrealized		Fair
March 28, 2015	Cost		Holding Gains		Holding Losses		Value
Available-for-sale:
Level 1
Equity securities	$	1,198	$	6,485	$	-	$	7,683
Level 2
Municipal bonds		71,057		1,776		(36)		72,797
	$	72,255	$	8,261	$	(36)	$	80,480

			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

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

Maturities of marketable securities classified as available-for-sale at March 28, 2015, were as follows:

		Amortized		Fair
(dollars in thousands)		Cost		Value
Available-for-sale:
Due within one year	$	4,527	$	4,567
Due after one year through five years		47,131		48,344
Due after five years through ten years		19,399		19,886
Equity securities		1,198		7,683
	$	72,255	$	80,480