Investments (Tables)

9 Months Ended

Sep. 24, 2016

Investments [Abstract]

Marketable securities [Table Text Block]

Marketable securities, as of September 24, 2016 and December 26, 2015, consisted of:

			Gross		Gross
(dollars in thousands)	Amortized		Unrealized		Unrealized		Fair
September 24, 2016	Cost		Holding Gains		Holding Losses		Value
Available-for-sale:
Level 1
Equity securities	$	1,198	$	7,967	$	-	$	9,165
Level 2
Municipal bonds		70,656		1,457		(21)		72,092
	$	71,854	$	9,424	$	(21)	$	81,257

			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

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

Maturities of marketable securities classified as available-for-sale at September 24, 2016, were as follows:

		Amortized		Fair
(dollars in thousands)		Cost		Value
Available-for-sale:
Due within one year	$	4,584	$	4,634
Due after one year through five years		27,238		27,846
Due after five years through ten years		14,281		15,059
Due after ten years		24,553		24,553
Equity securities		1,198		9,165
	$	71,854	$	81,257