Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2015

Summary of Significant Accounting Policies [Abstract]

Schedule of Cash and Equivalents

Cash and cash equivalents consist of the following at (in thousands):

	June 30,		December 31,
	2015		2014
Cash	$	13,203	$	4,481
Money market funds		125,090		20,354
Government-backed security		28,000		7,500
Asset-backed securities		1,091		—
Cash and cash equivalents	$	167,384	$	32,335