Income Taxes (Tables)

12 Months Ended

Dec. 31, 2013

Income Taxes

Schedule of reconciliation of income taxes computed using the U.S. federal statutory rate to that reflected in operations

	Year Ended December 31, 2013			Year Ended December 31, 2012			Period from April 5, 2011 (inception) to December 31, 2011
Income tax benefit using U.S. federal statutory rate		34.00	%		34.00	%		34.00	%
State income taxes, net of federal benefit		5.28	%		5.42	%		5.47	%
Research and development tax credits		2.31	%		0.00	%		1.70	%
Permanent items		(1.09	)%		(2.78	)%		(3.93	)%
Change in the valuation allowance		(40.50	)%		(36.64	)%		(37.24	)%
		—	%		—	%		—	%

Schedule of principal components of deferred tax assets

The principal components of our deferred tax assets are as follows (in thousands):

	December 31, 2013			December 31, 2012
Deferred tax assets:
Net operating loss carryforwards	$	12,939		$	5,527
Research and development credits		823			153
Stock-based compensation		1,602			142
Patent and technology access fee		1,954			129
Other		350			(23	)
Gross deferred tax assets		17,668			5,928
Valuation allowance		(17,668	)		(5,928	)
Net deferred tax asset	$	—		$	—