Investments (Tables)

6 Months Ended

Jun. 30, 2013

Investments, Debt and Equity Securities [Abstract]

Available-for-sale Securities

The following tables report the cost and carrying value of available-for-sale investments at June 30, 2013 and December 31, 2012 (in thousands):

June 30, 2013	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Carrying Value
Debt securities:
Corporate bonds	$	6,837	$	240	$	(32	)	$	7,045
Marketable equity securities	30,492		9,452		(427		)	39,517
Total	$	37,329	$	9,692	$	(459	)	$	46,562

December 31, 2012	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Carrying Value
Debt securities:
Corporate bonds	$	7,758	$	324	$	(56	)	$	8,026
Marketable equity securities	33,847		7,212		(621		)	40,438
Total	$	41,605	$	7,536	$	(677	)	$	48,464

Schedule of Unrealized Loss on Investments

The following tables summarize the market value of those investments in an unrealized loss position for periods less than or greater than 12 months (in thousands):

	June 30, 2013				December 31, 2012
Less than 12 months	Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss
Debt securities:
Corporate bonds	$	2,239	$	32	$	768	$	12
Marketable equity securities	2,727		277		5,193		615
Total	$	4,966	$	309	$	5,961	$	627

	June 30, 2013				December 31, 2012
Greater than 12 months	Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss
Debt securities:
Corporate bonds					$	2,204	$	44
Marketable equity securities	$	1,609	$	150	45		6
Total	$	1,609	$	150	$	2,249	$	50