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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Redeemable convertible preferred stock, Series A, discount $ 486 $ 502
Redeemable convertible preferred stock, par value $ 0.001 $ 0.001
Redeemable convertible preferred stock, shares authorized 1,000,000 1,000,000
Redeemable convertible preferred stock, shares issued 1,000,000 1,000,000
Redeemable convertible preferred stock, shares outstanding 1,000,000 1,000,000
Common stock, par value $ 0.001 $ 0.001
Common stock, shares authorized 50,000,000 50,000,000
Common stock, shares issued 9,530,437 9,444,878
Common stock, shares outstanding 9,304,829 9,219,270
Treasury stock, shares 225,608 225,608
Equity Method Investments    
Accumulated Deficit; accumulated statutory reserves in equity method investments $ 2,809 $ 2,809