Annual report pursuant to Section 13 and 15(d)

Computation of Net Loss per Share of Common Stock Components of Net Loss From Continuing Operations Per Basic and Diluted Share (Details)

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Computation of Net Loss per Share of Common Stock Components of Net Loss From Continuing Operations Per Basic and Diluted Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]      
Weighted average shares outstanding – basic 10,395 9,499 9,347
Net loss $ (6,443) $ (3,617) $ (11,724)
Warrants (105) (161) 0
Loss attributable to common shareholders $ (6,548) $ (3,778) $ (11,724)
Weighted average shares outstanding – diluted (shares) 10,414 9,606 9,347
Net loss per share – diluted $ (0.63) $ (0.39) $ (1.25)
Net loss per share – basic $ (0.62) $ (0.38) $ (1.25)
Warrants      
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]      
Incremental common shares attributable to dilutive effect of call options and warrants 19 107 0