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Going Concern and Management's Plans (Details Narrative) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Mar. 31, 2017
Dec. 31, 2016
Accumulated deficit $ 385,963 $ 378,900    
Cash and cash equivalents 461 $ 9,519 $ 334 $ 345
May 8, 2018 [Member]        
Cash and cash equivalents $ 522