Investments (Tables)

12 Months Ended

Dec. 26, 2015

Investments [Abstract]

Marketable securities [Table Text Block]

Marketable securities, as of December 26, 2015 and December 27, 2014, consisted of:

			Gross		Gross
(dollars in thousands)	Amortized		Unrealized		Unrealized		Fair
December 26, 2015	Cost		Holding Gains		Holding Losses		Value
Available-for-sale:
Level 1
Equity securities	$	1,198	$	6,682	$	-	$	7,880
Level 2
Municipal bonds		82,347		1,468		(66)		83,749
	$	83,545	$	8,150	$	(66)	$	91,629

			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]

		Amortized		Fair
(dollars in thousands)		Cost		Value
Available-for-sale:
Due within one year	$	9,775	$	9,839
Due after one year through five years		52,426		53,285
Due after five years through ten years		20,146		20,625
Equity securities		1,198		7,880
	$	83,545	$	91,629