Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2018

Marketable Securities [Abstract]

Schedule Of Marketable Securities

Marketable securities, as of March 31, 2018and December 30, 2017, consisted of:

			Gross		Gross
(dollars in thousands)	Amortized		Unrealized		Unrealized		Fair
March 31, 2018	Cost		Holding Gains		Holding Losses		Value
Available-for-sale:
Level 1
Equity securities	$	1,198	$	6,855	$	-	$	8,053
Level 2
Municipal bonds		53,110		363		(317)		53,156
	$	54,308	$	7,218	$	(317)	$	61,209

			Gross		Gross
(dollars in thousands)	Amortized		Unrealized		Unrealized		Fair
December 30, 2017	Cost		Holding Gains		Holding Losses		Value
Available-for-sale:
Level 1
Equity securities	$	1,198	$	7,634	$	-	$	8,832
Level 2
Municipal bonds		54,278		671		(116)		54,833
	$	55,476	$	8,305	$	(116)	$	63,665

Schedule Of Maturities Of Marketable Securities

Maturities of marketable securities classified as available-for-sale at March 31, 2018, were as follows:

		Amortized		Fair
(dollars in thousands)		Cost		Value
Available-for-sale:
Due within one year	$	11,738	$	11,761
Due after one year through five years		21,765		21,910
Due after five years through ten years		19,607		19,485
Equity securities		1,198		8,053
	$	54,308	$	61,209