XML 39 R29.htm IDEA: XBRL DOCUMENT v3.20.2
Leases - Components of lease expense (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Components of lease expense        
Operating lease cost $ 231,989 $ 231,989 $ 695,968 $ 695,968
Variable lease cost 144,009 148,353 449,964 324,834
Total operating lease cost 375,998 380,342 1,145,932 1,020,802
Related cash flows        
Operating cash flows from operating leases $ 264,764 $ 259,014 $ 784,975 $ 767,894