Marketable Securities Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2014

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-sale Securities Reconciliation

The amortized cost, gross unrealized holding gains, gross unrealized holding losses, and fair value for available-for-sale securities by major security type and class of security at December 31, 2014 and 2013 were as follows:



(In thousands)			Amortized cost		Gross unrealized holding gains		Gross unrealized holding losses			Estimated fair value
December 31, 2014
	Available-for-sale securities:
		Corporate bonds and notes	$	19,804	$	89	$	(55	)	$	19,838
		Municipal bonds	6,292		28		(2		)	6,318

	Total available-for-sale securities		$	26,096	$	117	$	(57	)	$	26,156



(In thousands)			Amortized cost		Gross unrealized holding gains		Gross unrealized holding losses			Estimated fair value
December 31, 2013
	Available-for-sale securities:
		Corporate bonds and notes	$	18,832	$	68	$	(43	)	$	18,857
		Municipal bonds	6,658		22		(11		)	6,669

	Total available-for-sale securities		$	25,490	$	90	$	(54	)	$	25,526

Marketable Securities

Maturities of marketable securities classified as available-for-sale securities were as follows at December 31, 2014:



(In thousands)		Amortized cost		Estimated fair value

	Due within one year	$	6,998	$	6,994
	Due after one year through five years	18,733		18,796
	Due after five years through ten years	365		366

Total available-for-sale securities		$	26,096	$	26,156

Available-for-sale Marketable Securities

The available-for-sale marketable securities in a gross unrealized loss position as of December 31, 2014 are summarized as follows:



	Less than 12 months					More than 12 months					Total
(In thousands)	Estimated fair value		Gross unrealized holding losses			Estimated fair value		Gross unrealized holding losses			Estimated fair value		Gross unrealized holding losses
As of December 31, 2014
Corporate bonds and notes	$	1,601	$	(11	)	$	6,865	$	(44	)	$	8,466	$	(55	)
Municipal bonds	—		—			1,168		(2		)	1,168		(2		)

	$	1,601	$	(11	)	$	8,033	$	(46	)	$	9,634	$	(57	)