Summary of Significant Accounting Policies (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2015

Dec. 31, 2014

Earnings Per Share [Abstract]

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following potentially dilutive securities have been excluded from the computations of diluted weighted-average shares outstanding as they would be anti-dilutive:

	March 31,
	2015	2014
Shares underlying warrants outstanding	5,009,848	16,820,281
Shares underlying options outstanding	2,094,562	2,375,748
Unvested restricted stock	132,077	59,199

The following securities have been excluded from the dilutive per share computation as they are antidilutive:

	December 31,
	2014		2013
Shares underlying options outstanding		2,472,234		2,410,134
Shares underlying warrants outstanding		16,752,915		5,081,023
Unvested restricted stock		132,077		75,450