Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2014

Schedule of Non-Controlling Interest in Subsidiary

The Company’s ownership of Silver Creek was 64% as of June 30, 2014 and December 31, 2013. The consolidated financial statement activity related to Silver Creek was as follows:


(in thousands)	Non-Controlling Interest
Balance at December 31, 2013	$	337
Net loss attributable to Silver Creek		(350	)

Balance at June 30, 2014	$	(13	)


	Non-Controlling Interest
Balance at December 31, 2012	$	97
Net loss attributable to Silver Creek		(339	)

Balance at June 30, 2013	$	(242	)

Schedule of Available-for-Sale Securities, All of Which Have Maturities of Twelve Months or Less

Available-for-sale securities, all of which have maturities of twelve months or less, as of June 30, 2014 consisted of the following:


	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
	(in thousands)
June 30, 2014:
Commercial paper	$	14,998	$	—	$	(3	)	$	14,995