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Stockholders' Equity (Details) - $ / shares
6 Months Ended 12 Months Ended
Jan. 24, 2018
Dec. 22, 2017
Jun. 30, 2018
Dec. 31, 2017
Dividend yield (%) 0.00% 0.00% 0.00% 0.00%
Expected volatility (%) 42.40% 36.90% 39.40% 36.90%
Risk free interest rate (%) 1.75% 1.72% 2.11% 1.74%
Strike price $ 1.00 $ 1.00 $ 1.00 $ 1.00
Probability of if-converted scenario (%) 90.00% 90.00% 90.00% 90.00%
Probability assumed liquidation scenario (%) 10.00% 10.00% 10.00% 10.00%
Expected term of Option (years) 10 months 24 days 1 year 10 months 24 days 1 year
Option's fair value per share $ 0.30   $ 0.13 $ 0.33
Series B Preferred Stock [Member]        
Strike price $ 1.10 $ 1.24 $ 0.83 $ 1.13