Condensed Consolidated Statements of Changes In Stockholders' Deficit (Unaudited) - KRW (₩) ₩ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Deficit [Member]	Total
Balance at Dec. 31, 2017	₩ 25,265	₩ 6,577,829	₩ (56,593)	₩ (10,492,538)	₩ (3,946,037)
Balance, shares at Dec. 31, 2017	22,061,317
Private placement	₩ 933	558,997			559,930
Private placement, shares	866,675
Foreign exchange translation gain			1,545		1,545
Remeasurement of pension liabilities			(7,786)		(7,786)
Net (income) loss				(728,434)	(728,437)
Balance at Sep. 30, 2018	₩ 26,198	7,136,826	(62,834)	(11,220,972)	(4,120,782)
Balance, shares at Sep. 30, 2018	22,927,992
Balance at Dec. 31, 2018	₩ 26,198	7,221,876	(215,614)	(11,631,198)	(4,598,738)
Balance, shares at Dec. 31, 2018	22,927,992
Foreign exchange translation gain		20,319	(23,485)		(3,166)
Remeasurement of pension liabilities			(29,215)		(29,215)
Warrants issued for professional service		373,826			373,826
Warrants exercised	₩ 262	20,683			20,945
Warrants exercised, shares	231,113
Net (income) loss				123,731	123,731
Balance at Sep. 30, 2019	₩ 26,460	₩ 7,636,704	₩ (268,314)	₩ (11,507,467)	₩ (4,112,617)
Balance, shares at Sep. 30, 2019	23,159,105