DISCONTINUED OPERATIONS - Additional Information (Details) $ in Thousands, ₩ in Billions	Dec. 31, 2015	Sep. 28, 2015 KRW (₩)	Sep. 28, 2015 USD ($)	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]
Percentage ownership agreed to sell		50.01%	50.01%
Consideration transferred		₩ 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%