Earnings Per Share (Details 1) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Numerator
Net (loss) income	$ (3,534,882)	$ (2,668,184)	$ (7,831,494)	$ 2,594,195
Effects of Series A redeemable convertible preferred stock:
Less: Series A redeemable convertible preferred stock dividends	195,366	186,904	387,974	377,690
Less: Accretion to redemption value of Series A redeemable convertible preferred stock	170,981	143,557	334,650	280,974
Net (loss) income attributable to common stockholders	$ (3,901,229)	$ (2,998,645)	$ (8,554,118)	$ 1,935,531
Denominator
Weighted average basic shares outstanding (in shares)	43,159,285	40,964,160	42,521,018	40,949,849
Effect of dilutive securities:
Stock options and restricted stock	0	0	0	1,542,828
Series A redeemable convertible preferred stock	0	0	0	0
Weighted average diluted shares outstanding (in shares)	43,159,285	40,964,160	42,521,018	42,492,677
Basic net (loss) income per share attributable to common stockholders (in dollars per share)	$ (0.09)	$ (0.07)	$ (0.20)	$ 0.05
Diluted net (loss) income per share attributable to common stockholders (in dollars per share)	$ (0.09)	$ (0.07)	$ (0.20)	$ 0.05