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Redeemable Convertible Preferred Stock (Details Narrative) (10 K) - Redeemable Convertible Preferred Stock [Member]
₩ in Thousands
Jun. 08, 2016
KRW (₩)
May 30, 2017
shares
May 17, 2016
$ / shares
May 17, 2016
KRW (₩)
shares
Number of preferred shares converted into common shares | shares   12,800    
Securities Purchase Agreement [Member] | Accredited Investor [Member]        
Number of preferred stock shares sold | shares       12,800
Preferred stock par value per share | $ / shares     $ 10,000  
Preferred stock principal amount | ₩       ₩ 640,000
Proceeds from sale of preferred stock net of issuance cost | ₩ ₩ 3,993