Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Taxes

Schedule of reconciliation of the U.S. statutory income tax rate to the Company's effective tax rate

	December 31,
	2014			2013			2012
Federal income tax (benefit) at statutory rate		(34.0	)%		(34.0	)%		(34.0	)%
Change in Tax Rate		2.1	%		—	%		—	%
Permanent items		1.0	%		4.9	%		0.4	%
Other		0.1	%		—	%		(0.2	)%
Change in valuation allowance		30.8	%		29.1	%		33.8	%
Effective income tax rate		0.0	%		0.0	%		0.0	%

Schedule of significant components of the Company's deferred tax assets

	December 31,
	2014			2013
	(in thousands)
Deferred tax assets:
Federal and state operating loss carryforwards	$	33,099		$	22,485
Equity Compensation		971			206
Temporary differences		138			113
Total deferred tax assets		34,208			22,804
Valuation allowance		(34,208	)		(22,804	)
Net deferred tax assets	$	—		$	—