Earnings Per Share - Schedule of Basic and Diluted Earnings per Share (Details) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Numerator:
Net income (loss)	$ (2,148,873)	$ 1,138,720
Denominator:
Weighted-average shares outstanding – basic	53,145,186	52,753,621
Effect of dilutive securities:
Employee and director stock options and restricted common shares	0	937,444
Contingently issuable shares	0	187,632
Weighted-average shares outstanding – diluted	53,145,186	53,878,697
Basic earnings per share (in dollars per share)	$ (0.04)	$ 0.02
Diluted earnings per share (in dollars per share)	$ (0.04)	$ 0.02