Significant Accounting Policies (Schedule of Product Warrant Liability) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Accounting Policies [Abstract]
Balance as of beginning of year	$ 20,000	$ 20,000
Less: Payments made
Add: Provision for current years warranty
Balance as of end of year	$ 20,000	$ 20,000