Investments (Tables)

3 Months Ended

Mar. 26, 2016

Investments [Abstract]

Marketable securities [Table Text Block]

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

			Gross		Gross
(dollars in thousands)	Amortized		Unrealized		Unrealized		Fair
March 26, 2016	Cost		Holding Gains		Holding Losses		Value
Available-for-sale:
Level 1
Equity securities	$	1,198	$	7,659	$	-	$	8,857
Level 2
Municipal bonds		68,162		1,553		(11)		69,704
	$	69,360	$	9,212	$	(11)	$	78,561

			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 March 26, 2016, were as follows:

		Amortized		Fair
(dollars in thousands)		Cost		Value
Available-for-sale:
Due within one year	$	5,401	$	5,439
Due after one year through five years		46,389		47,209
Due after five years through ten years		16,372		17,056
Equity securities		1,198		8,857
	$	69,360	$	78,561