DISCONTINUED OPERATIONS - Additional Information (Details) $ in Thousands, ₩ in Billions	9 Months Ended
	Sep. 30, 2015 KRW (₩) company	Sep. 30, 2015 USD ($)	Sep. 28, 2015	Dec. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage ownership agreed to sell			50.01%
JobKorea Ltd. | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of companies	2
Percentage ownership agreed to sell			50.01%
Consideration transfered	₩ 101	$ 85,000
JobKorea Ltd.
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage ownership interest sold				49.99%
JobKorea Ltd. | JobKorea Ltd. | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage ownership interest sold				49.99%