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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Statement of Financial Position [Abstract]    
Series A Convertible Preferred stock, authorized 100,000 100,000
Series A Convertible Preferred stock, par value $ 0.01 $ 0.01
Series A Convertible Preferred stock, issued 50,000 50,000
Series A Convertible Preferred stock, outstanding 50,000 50,000
Liquidation preference shares $ 2,943 $ 2,856
Common stock, par value $ 0.01 $ 0.01
Common stock, unlimited authorized Unlimited Unlimited
Common stock, issued 13,405,838 13,405,838
Common stock, outstanding 13,405,838 13,405,838