Stockholders' Equity (Details 5) (Restricted Stock [Member], USD $)	12 Months Ended
	Dec. 31, 2014
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Shares, Outstanding, Beginning Balance	2,026,554
Restricted Shares, Granted	1,472,475
Restricted Shares, Canceled	0
Restricted Shares, Vested	(286,494)
Restricted Shares, Expired/Forfeited	(4,125)
Restricted Shares, Outstanding, Ending Balance	3,208,410
Weighted-Average Exercise Price, Outstanding, Beginning Balance	$ 3.59
Weighted-Average Grant Date Fair Value, Granted	$ 5.43
Weighted-Average Grant Date Fair Value, Canceled	$ 0
Weighted-Average Grant Date Fair Value, Vested	$ 3.33
Weighted-Average Grant Date Fair Value, Expired/Forfeited	$ 4.3
Weighted-Average Exercise Price, Outstanding, Ending Balance	$ 4.46