Consolidated Statements of Operations and Comprehensive Loss ₩ in Thousands	12 Months Ended
	Dec. 31, 2017 $ / shares	Dec. 31, 2017 KRW (₩) shares	Dec. 31, 2016 $ / shares	Dec. 31, 2016 KRW (₩) shares
Revenue
Product		₩ 1,866,863		₩ 2,321,425
Service		2,105,248		2,543,715
Total revenue		3,972,111		4,865,140
Cost of revenue
Product		1,677,034		1,959,184
Service		1,938,704		1,731,370
Total cost of revenue		3,615,738		3,690,554
Gross margin		356,373		1,174,586
Selling, general and administrative expenses		2,783,121		2,286,685
Loss from operations		(2,426,748)		(1,112,099)
Other expense:
Interest expense, net		(226,721)		(198,556)
Other income (expense), net		(6,639)		(11,070)
Total other expense		(233,360)		(187,486)
Loss before provision for income taxes		(2,660,108)		(1,299,585)
Income tax benefit		(9,118)		(16,205)
Net loss		₩ (2,650,990)		₩ (1,283,380)
Net loss per common share | $ / shares	$ (308.18)		$ (5,227.92)
Weighted average common shares outstanding | shares		8,601,977		245,486
Net loss		₩ (2,650,990)		₩ (1,283,380)
Other comprehensive income (loss):
Foreign exchange translation loss		(15,781)
Remeasurement of pension liabilities		32,326		57,453
Other comprehensive income, net of tax:		16,545		57,453
Comprehensive loss		₩ (2,634,445)		₩ (1,225,927)