XML 54 R42.htm IDEA: XBRL DOCUMENT v3.10.0.1
Stock-Based Compensation - Narrative (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]        
Option and restricted stock unit vesting period (up to)     3 years  
Stock based compensation $ 289,950 $ 293,825 $ 667,797 $ 586,159
Compensation cost related to non vested awards not yet recognized $ 704,315   $ 704,315  
Average remaining expense recognition period     1 year 6 months