Background (Detail Narrative) - USD ($) $ / shares in Units, $ in Thousands										12 Months Ended
	Nov. 29, 2018	Oct. 31, 2018	Sep. 30, 2018	Sep. 28, 2018	Sep. 26, 2018	Sep. 24, 2018	Aug. 24, 2018	Jan. 24, 2018	Dec. 22, 2017	Dec. 31, 2018	Dec. 31, 2017	Aug. 30, 2018	Dec. 31, 2016
Accumulated deficit										$ (139,690)	$ (135,022)
Net loss										(2,044)	(19,384)
Cash and cash equivalents										$ 1,840	$ 948		$ 2,335
Number of shares issued
Bid price (in dollars per share)						$ 1.00		$ 1.00		$ 1.00	$ 1.00	$ 1.00
Operating loss										$ 5,645	$ 12,256
Minimum maintained capital under nasdaq marketplace										$ 2,500
Common Stock [Member]
Number of shares issued										3,441,939
Series B Preferred Stock [Member]
Bid price (in dollars per share)						$ 0.38		$ 1.10			$ 1.13	$ 0.44
Series D Preferred Stock [Member]
Principal amounts						$ 0
Opportunity Fund I-SS, LLC (Investor) [Member] | Common Stock [Member]
Shares issued price per share (in dollars per share)										$ 0.15
Number of shares issued upon conversion										1,333,333
Number of shares issued upon conversion, value										$ 200
Securities Purchase Agreement [Member] | Opportunity Fund I-SS, LLC (Investor) [Member]
Principal amounts									$ 15,000
Shares issued price per share (in dollars per share)									$ 1.00
Securities Purchase Agreement [Member] | Opportunity Fund I-SS, LLC (Investor) [Member] | Series B Preferred Stock [Member]
Number of shares issued upon conversion							100,000	2,225,000	1,500,000
Number of shares issued upon conversion, value							$ 100	$ 2,200	$ 1,500
Remediation Agreement [Member] | Common Stock [Member]
Number of shares issued						5,628,291
Remediation Agreement [Member] | Series D Preferred Stock [Member]
Number of shares issued upon conversion				153,846						2,461,538
Number of shares issued upon conversion, value			$ 400	$ 100						$ 1,600
Remediation Agreement [Member] | Opportunity Fund I-SS, LLC (Investor) [Member] | Common Stock [Member]
Number of shares issued upon conversion	153,846									2,461,538
Number of shares issued upon conversion, value	$ 100									$ 1,600
Remediation Agreement [Member] | Opportunity Fund I-SS, LLC (Investor) [Member] | Series B Preferred Stock [Member]
Number of shares terminated						3,825,000
Remediation Agreement [Member] | Opportunity Fund I-SS, LLC (Investor) [Member] | Series D Preferred Stock [Member]
Number of shares issued upon conversion		153,846			153,846
Number of shares issued upon conversion, value		$ 100			$ 100
Number of shares issued						6,217,490
Remediation Agreement [Member] | Opportunity Fund I-SS, LLC (Investor) [Member] | Series D Preferred Stock [Member] | Common Stock [Member]
Number of shares converted into common stock	6,619,483