Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	9 Months Ended	12 Months Ended
	Aug. 31, 2017	Sep. 30, 2018	Dec. 31, 2017	Dec. 27, 2017
Stockholders' Equity (Textual)
Warrants to purchase common stock outstanding		1,116,368	1,116,368
Common stock per share				$ 1.00
August 2017 Private Placement [Member] | Warrant [Member]
Stockholders' Equity (Textual)
Issuance of common stock			325,000
Common stock per share			$ 20.00
Cash proceeds from warrants			$ 6,500
Warrant, description			The 2017 Warrants will become exercisable 12 months from the date of issuance and will expire three years from the date of issuance.
Securities Purchase Agreement [Member] | August 2017 Private Placement [Member]
Stockholders' Equity (Textual)
Issuance of common stock	975,000
Common stock per share	$ 10.00
Gross proceeds warrants for an aggregate purchase price	$ 9,750