XML 52 R43.htm IDEA: XBRL DOCUMENT v3.10.0.1
Cash and Cash Equivalents (Details) - USD ($)
Jun. 30, 2018
Dec. 31, 2017
Jun. 30, 2017
Dec. 31, 2016
Schedule of cash and cash equivalents        
Cash and cash equivalents $ 2,514,519 $ 3,798,811 $ 3,847,632 $ 5,150,344