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Related Party Transactions (Details Textual) - USD ($) $ in Millions	1 Months Ended		3 Months Ended	9 Months Ended
	Aug. 31, 2018	Oct. 31, 2017	Sep. 30, 2018	Sep. 30, 2018	Dec. 31, 2015
Related Party Transactions (Textual)
Aggregate principal amount	$ 0.4				$ 0.5
Outstanding balance	0.5
Accrued interest	$ 0.1
New note payment terms, description	The New Note requires scheduled payments starting on December 31, 2020 until December 31, 2052.
Payment of insurance premium		$ 0.2
Net book value	$ 1.0
Amount paid to employees				$ 0.8
Recognized gain from extinguishment of liability			$ 0.2	0.2
New Note [Member]
Related Party Transactions (Textual)
Outstanding balance	$ 0.1		$ 0.1	$ 0.1

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Amount Paid To Employees.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Value of stock issued as a result of the exercise of stock options.

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