Available-for-sale Securities (Tables)

12 Months Ended

Dec. 31, 2014

Summary of Available for Sale Securities

The following is a summary of available-for-sale securities at December 31, 2014 (in thousands):

	December 31, 2014
	Amortized Cost		Gross     Unrealized Loss			Fair Value
Money market funds	$	3,912	$	0		$	3,912
United States government agency securities		3,427		(1	)		3,426
Corporate debt securties		26,118		(30	)		26,088
Total available-for-sale securities	$	33,457	($	31	)	$	33,426

The following is a summary of available-for-sale securities at December 31, 2013 (in thousands):

	December 31, 2013
	Amortized Cost		Gross     Unrealized (Loss)     Gain			Fair Value
Money market funds	$	8,650	$	0		$	8,650
United States government agency securities		5,019		(1	)		5,018
Corporate debt securties		23,165		8			23,173
Total available-for-sale securities	$	36,834	$	7		$	36,841

Available for Sale Securities by Original Contractual Maturity

Available-for-sale securities at December 31, 2014 and 2013, consisted of the following by original contractual maturity (in thousands):

	December 31, 2014				December 31, 2013
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
One year or less	$	27,752	$	27,727	$	30,700	$	30,701
Greater than one year and less than five years		5,705		5,699		6,134		6,140
Total available-for-sale securities	$	33,457	$	33,426	$	36,834	$	36,841