Stockholders' Equity (Details 4) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Number of Shares
Outstanding at end of year	3,323,876	7,163
Non Employee
Number of Shares
Outstanding at beginning of year	30,000
Non Employee Options granted
Non Employee Options exercised
Non Employee Options cancelled
Outstanding at end of year	30,000	30,000
Options vested and expected to vest	30,000
Options vested and exercisable	30,000
Weighted Average Exercise Price
Outstanding at beginning of year	$ 7.08
Non Employee Options granted
Outstanding at end of year	$ 7.08	$ 7.08
Options vested and expected to vest	$ 7.08
Options vested and exercisable	$ 7.08
Aggregate Intrinsic Value
Aggregate intrinsic value of share outstanding		$ 29,400
Options vested and expected to vest
Options vested and exercisable
Weighted Average Remaining Contractual Life
Weighted average remaining contractual life of share outstanding		9 years 3 months 15 days
Weighted average remaining contractual life of share Options granted	9 years
Options vested and expected to vest	9 years
Options vested and exercisable	9 years