Stockholders' Deficit (Details) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($) $ / shares shares
Summary of stock options
Options Outstanding, Beginning balance | shares	128
Stock Options Outstanding, Granted | shares	315
Shares Outstanding, Ending balance | shares	443
Stock Options, Shares exercisable at March 31, 2016 | shares	223
Weighted Average Exercise Price, Outstanding, Beginning Balance | $ / shares	$ 11.25
Weighted Average Exercise Price, Granted | $ / shares	3.07
Weighted Average Exercise Price, Outstanding, Ending Balance | $ / shares	5.42
Weighted Average Exercise Price, Exercisable at March 31, 2016 | $ / shares	$ 7.38
Aggregate Intrinsic Value, Outstanding | $	$ 126,100
Aggregate Intrinsic Value, Exercisable at March 31, 2016 | $	$ 67,900
Weighted Average Remaining Contractual Life, Outstanding	8 years 9 months 18 days
Weighted Average Remaining Contractual Life, Exercisable at March 31, 2016	7 years 1 month 6 days