Investments, Available-for-sale securities (Details) - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Investment Securities [Abstract]
Balance	$ 99,264	$ 103,090
4GRIT [Member]
Investment Securities [Abstract]
Balance	$ 44,940	$ 46,672
Percentage of ownership	2.50%	2.50%
E-channel [Member]
Investment Securities [Abstract]
Balance	$ 42,505	$ 44,143
Percentage of ownership	0.07%	0.07%
KSFC [Member]
Investment Securities [Abstract]
Balance	$ 11,819	$ 12,275
Percentage of ownership	0.00%	0.00%