Earnings Per Share (Details 1) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Numerator
Net (loss) income	$ (2,668,184)	$ 1,330,947	$ 2,594,195	$ (1,470,851)
Effects of Series A redeemable convertible preferred stock:
Less: Series A redeemable convertible preferred stock dividends	186,904	186,904	377,690	373,808
Less: Accretion to redemption value of Series A redeemable convertible preferred stock	143,557	120,531	280,974	235,907
Net (loss) income attributable to common stockholders	$ (2,998,645)	$ 1,023,512	$ 1,935,531	$ (2,080,566)
Denominator
Weighted average basic shares outstanding (in shares)	40,964,160	47,919,318	40,949,849	47,975,217
Effect of dilutive securities:
Stock options and restricted stock	0	861,288	1,542,828	0
Series A redeemable convertible preferred stock	0	0	0	0
Weighted average diluted shares outstanding (in shares)	40,964,160	48,780,606	42,492,677	47,975,217
Basic net (loss) income per share attributable to common stockholders (in dollars per share)	$ (0.07)	$ 0.02	$ 0.05	$ (0.04)
Diluted net (loss) income per share attributable to common stockholders (in dollars per share)	$ (0.07)	$ 0.02	$ 0.05	$ (0.04)