Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2014

The following is a summary of available-for-sale securities at December 31:



($ in thousands)		2014				2013
Marketable Securities:	Fair Value Hierarchy	Cost		Estimated Fair Value		Cost		Estimated Fair Value
Certificates of deposit
with unrecognized losses for less than 12 months		$	2,522	$	2,492	$	1,690	$	1,677
with unrecognized losses for more than 12 months		837		832		110		110
with unrecognized gains		5,379		5,395		6,298		6,334
Total Certificates of deposit	Level 1	8,738		8,719		8,098		8,121
US Treasury and agency notes
with unrecognized losses for less than 12 months		1,919		1,910		4,672		4,664
with unrecognized losses for more than 12 months		702		700		1,699		1,694
with unrecognized gains		1,182		1,207		3,713		3,760
Total US Treasury and agency notes	Level 2	3,803		3,817		10,084		10,118
Corporate notes
with unrecognized losses for less than 12 months		3,872		3,841		7,270		7,192
with unrecognized losses for more than 12 months		4,423		4,405		530		523
with unrecognized gains		16,897		16,963		21,945		22,173
Total Corporate notes	Level 2	25,192		25,209		29,745		29,888
Municipal notes
with unrecognized losses for less than 12 months		739		733		1,688		1,677
with unrecognized losses for more than 12 months		457		456		318		316
with unrecognized gains		3,183		3,206		5,267		5,316
Total Municipal notes	Level 2	4,379		4,395		7,273		7,309
		$	42,112	$	42,140	$	55,200	$	55,436

The following tables summarize the maturities, at par, of marketable securities by year ($ in thousands):