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Consolidated Statements of Changes in Stockholder's Equity / (Deficit) - USD ($)
Total
Common Stock [Member]
Paid-in Capital [Member]
Accumulated Deficit [Member]
Non-controlling Interest [Member]
Beginning Balance at Dec. 31, 2017 $ (37,982,936) $ 847 $ 212,103,344 $ (234,709,910) $ (15,377,217)
Share-based compensation 207,807   207,807    
Net (loss) (4,251,365)     (2,386,318) (1,865,047)
Ending Balance at Jun. 30, 2018 (42,026,494) 847 212,311,151 (237,096,228) (17,242,264)
Beginning Balance at Mar. 31, 2018 (40,520,416) 847 212,207,248 (236,454,672) (16,273,839)
Share-based compensation 103,903   103,903    
Net (loss) (1,609,982)     (641,556) (968,425)
Ending Balance at Jun. 30, 2018 (42,026,494) 847 212,311,151 (237,096,228) (17,242,264)
Beginning Balance at Dec. 31, 2018 (41,196,537) 922 217,993,953 (239,882,345) (19,309,066)
Share-based compensation 72,399 1 72,398    
Net (loss) (6,111,133)     (3,942,168) (2,168,965)
Ending Balance at Jun. 30, 2019 (47,235,270) 923 218,066,351 (243,824,513) (21,478,031)
Beginning Balance at Mar. 31, 2019 (43,539,943) 922 218,016,953 (241,050,231) (20,507,587)
Share-based compensation 49,399 1 49,398    
Net (loss) (3,744,726)     (2,774,282) (970,444)
Ending Balance at Jun. 30, 2019 $ (47,235,270) $ 923 $ 218,066,351 $ (243,824,513) $ (21,478,031)