XML 95 R81.htm IDEA: XBRL DOCUMENT v3.19.1
Profit Sharing Plan Expenses (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Pension Plan Expenses Details Abstract    
Profit sharing plan expenses $ 132,927 $ 178,155
Mandatory plan contribution percentage 3.00% 3.00%