Annual report pursuant to Section 13 and 15(d)

Retirement Plan Costs (Details)

v3.19.1
Retirement Plan Costs (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Defined Contribution Plan [Abstract]    
Maximum annual contribution per employee, percent 4.00%  
Employer matching contribution amount $ 222,083 $ 255,366