XML 20 R29.htm IDEA: XBRL DOCUMENT v3.20.1
Leases - Components of lease expense (Details) - USD ($)
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Components of lease expense    
Operating lease cost $ 231,989 $ 231,989
Variable lease cost 161,946 91,758
Total operating lease cost 393,935 323,747
Related cash flows    
Operating cash flows from operating leases $ 259,722 $ 253,387