Summary of Significant Accounting Policies (Details Textual)	6 Months Ended
	Jun. 30, 2018 USD ($) Segment $ / shares	Jun. 30, 2017 $ / shares
Summary of Significant Accounting Policies (Textual)
Number of operating segments | Segment	2
Deferred tax assets | $	$ 14,000,000
Minimum [Member]
Summary of Significant Accounting Policies (Textual)
Intangible assets, estimated useful life	11 years
Risk-free interest rate	2.68%
U.S. corporate income tax rate	21.00%
Maximum [Member]
Summary of Significant Accounting Policies (Textual)
Intangible assets, estimated useful life	16 years
Risk-free interest rate	2.85%
U.S. corporate income tax rate	35.00%
Stock options [Member]
Summary of Significant Accounting Policies (Textual)
Weighted average exercise price, outstanding	$ 7.25	$ 11.34
Dividend yield	0.00%
Expected term	4 years
Volatility rate	91.00%
Forfeiture rate	12.00%
Stock option vesting, description	Stock options issued to directors upon re-election vest quarterly for a period of one year (new director issuances are fully vested upon issuance). Stock options issued to employees generally vest 25% on the grant date, then 25% each subsequent year for a period of three years. Stock options vest over each three-month period from the date of issuance to the end of the three-year period. These options have a ten-year life for as long as the individuals remain employees or directors. In general, when an employee or director terminates their position the options will expire within three months, unless otherwise extended by the Board.
Weighted average exercise price, granted	$ 1.59	$ 2.55
Stock options [Member] | Minimum [Member]
Summary of Significant Accounting Policies (Textual)
Volatility rate		90.00%
Risk-free interest rate		1.60%
Stock options [Member] | Maximum [Member]
Summary of Significant Accounting Policies (Textual)
Volatility rate		93.00%
Risk-free interest rate		1.81%
Warrant [Member]
Summary of Significant Accounting Policies (Textual)
Weighted average exercise price, outstanding	$ 4.38	$ 4.45