Fair Value Measurements (Details) - Recurring [Member] - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Level 1 [Member]
Assets Measured at Fair Value on Recurring Basis [Abstract]
Available-for-sale securities	$ 0	$ 0
Total assets at fair value	0	0
Level 2 [Member]
Assets Measured at Fair Value on Recurring Basis [Abstract]
Available-for-sale securities	0	0
Total assets at fair value	0	0
Level 3 [Member]
Assets Measured at Fair Value on Recurring Basis [Abstract]
Available-for-sale securities	99,264	103,090
Total assets at fair value	$ 99,264	$ 103,090