Stock Based Compensation	3 Months Ended
Mar. 31, 2019
Share-based Payment Arrangement [Abstract]
Stock Based Compensation	7. Stock Based Compensation The Company recognizes share-based compensation at the fair value of the equity instrument on the grant date. Compensation expense is recognized over the required service period. Share-based compensation expenses were $211,759 and $168,351 for the three months ended March 31, 2019 and 2018, respectively. As of March 31, 2019, there was a total of $1,948,937 of unrecognized compensation cost, adjusted for estimated forfeitures, related to non-vested share-based payments granted to the Company’s employees. As of that date, the remaining unamortized expense is expected to be recognized over a weighted average period of approximately three years.

Stock Based Compensation

3 Months Ended

Mar. 31, 2019

Share-based Payment Arrangement [Abstract]

7. Stock Based Compensation

The Company recognizes share-based compensation at the fair value of the equity instrument on the grant date. Compensation expense is recognized over the required service period. Share-based compensation expenses were $211,759 and $168,351 for the three months ended March 31, 2019 and 2018, respectively.

As of March 31, 2019, there was a total of $1,948,937 of unrecognized compensation cost, adjusted for estimated forfeitures, related to non-vested share-based payments granted to the Company’s employees. As of that date, the remaining unamortized expense is expected to be recognized over a weighted average period of approximately three years.