Shareholders' Equity (Details 3) - Stock Options [Member] - USD ($)		6 Months Ended		12 Months Ended
		Jun. 30, 2018		Dec. 31, 2017
Class of Stock [Line Items]
Number of Shares Underlying Options, Outstanding, Beginning balance		11,472
Number of Shares Underlying Options, Outstanding, Ending balance		11,472		11,472
Number of Shares Underlying Options, Outstanding and Exercisable		1,701
Weighted Average Exercise Price, Outstanding, Beginning balance		$ 19.35		$ 19.35
Weighted Average Exercise Price, Outstanding, Ending balance		19.35		19.35
Weighted Average Exercise Price, Outstanding and Exercisable		19.35
Weighted Average Grant Date Fair Value, Outstanding, Beginning balance		4.78
Weighted Average Grant Date Fair Value, Outstanding, Ending balance		4.78		$ 4.78
Weighted Average Grant Date Fair Value, Outstanding and Exercisable		$ 4.78
Weighted Average Remaining Contractual Life, Outstanding		3 years 2 months 1 day		3 years 7 months 10 days
Weighted Average Remaining Contractual Life, Outstanding and Exercisable		3 years 2 months 1 day
Aggregate Intrinsic Value, Outstanding	[1]
Aggregate Intrinsic Value, Outstanding and Exercisable			[1]

[1] The aggregate intrinsic value is based on the $0.3811 closing price as of June 29, 2018 for the Company's Common Stock.