Summary of Significant Accounting Policies (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Accounting Policies [Abstract]
Beginning balance	$ 141,000	$ 79,000
Bad debt provision	72,000	67,000
Accounts written-off	0	(5,000)
Ending balance	$ 213,000	$ 141,000