Derivative Warrant Liabilities - Schedule of Outstanding Warrants Liabilities (Details) (Parenthetical) - USD ($) $ in Thousands			12 Months Ended
Sep. 04, 2018	Nov. 28, 2016	Dec. 31, 2017	Dec. 31, 2016	Sep. 30, 2018
Reverse stock split	1:15 reverse stock split	one-to-nine Reverse Stock Split
Estimated fair value of warrant liability			$ 28	$ 313	$ 5
September 4, 2018 [Member]
Reverse stock split			1:15 Reverse Split	1:15 Reverse Split

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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