Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) ₩ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2018 $ / shares	Sep. 30, 2018 KRW (₩) shares	Sep. 30, 2017 $ / shares	Sep. 30, 2017 KRW (₩) shares	Sep. 30, 2018 $ / shares	Sep. 30, 2018 KRW (₩) shares	Sep. 30, 2017 $ / shares	Sep. 30, 2017 KRW (₩) shares
Revenue
Total revenue		₩ 1,053,739		₩ 926,428		₩ 3,412,423		₩ 2,896,550
Cost of revenue
Total cost of revenue		877,720		547,420		2,423,708		2,472,380
Gross margin		176,019		379,008		988,715		424,170
Selling, general and administrative expenses		402,644		1,337,646		1,599,217		2,324,769
Loss from operations		(226,625)		(958,638)		(610,502)		(1,900,599)
Other expense:
Interest expense, net		(43,325)		(77,377)		(122,231)		(180,862)
Other income (expense), net		(1,041)		(1,906)		6,197		(11,385)
Total other expense		(44,366)		(79,283)		(116,034)		(192,247)
Loss before provision for income taxes		(270,991)		(1,037,921)		(726,536)		(2,092,846)
Income tax provision (benefit)		(295)		(9,605)		1,901		(37,485)
Net loss		₩ (270,698)		₩ (1,028,316)		₩ (728,437)		₩ (2,055,361)
Net loss per common share | $ / shares	$ (12)		$ (102)		$ (32)		$ (593)
Weighted average common shares outstanding | shares		22,927,992		10,094,682		22,661,323		3,468,071
Net loss		₩ (270,698)		₩ (1,028,316)		₩ (728,437)		₩ (2,055,361)
Other comprehensive income:
Foreign exchange translation loss		(9,622)				(1,545)		26,244
Remeasurement of pension liabilities		1,047		34,055		(7,786)		132,900
Other comprehensive income (loss), net of tax:		(8,575)		34,055		(6,241)		159,144
Comprehensive loss		(279,273)		(994,261)		(734,678)		(1,896,217)
Product [Member]
Revenue
Total revenue		379,398		316,430		1,397,830		1,215,231
Cost of revenue
Total cost of revenue		262,999		141,551		938,817		983,841
Service [Member]
Revenue
Total revenue		674,341		609,998		2,014,593		1,681,319
Cost of revenue
Total cost of revenue		₩ 614,721		₩ 405,869		₩ 1,484,891		₩ 1,488,539