5. Stock Options, Restricted Stock and Share-Based Compensation (Details) - Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Abstract]
Weighted average fair value of options granted (in Dollars per share)	$ 1.58	$ 1.41	$ 1.63	$ 1.38
Intrinsic value of options exercised	$ 110,709	$ 25,842	$ 182,454	$ 280,958
Cash received from stock options exercised	$ 137,130	$ 28,408	$ 258,801	$ 317,974
Number of options that vested (in Shares)	72,480	50,880	266,346	181,534
Fair value of options that vested	$ 117,328	$ 49,182	$ 376,313	$ 199,296
Unrecognized compensation expense related to non-vested options at end of period	$ 1,693,228	$ 814,783	$ 1,693,228	$ 814,783
Weighted average years over which non-vested option expense will be recognized	2 years 167 days	2 years 62 days	2 years 167 days	2 years 62 days