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CASH AND CASH EQUIVALENTS - Time deposits (Details) - CLP ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Cash and cash equivalent [Line items]    
Time Deposit $ 10,616,688 $ 1,879
Banco Santander 2.52 percent 12-29-2017 | Chilean Peso    
Cash and cash equivalent [Line items]    
Principal $ 7,500,000  
Annual rate 2.52%  
Time Deposit $ 7,516,275  
Banco Santander 2.40 Percent 2,700,000 Principal Amount 12-29-2017 | Chilean Peso    
Cash and cash equivalent [Line items]    
Principal $ 2,700,000  
Annual rate 2.40%  
Time Deposit $ 2,700,360  
Banco Santander 2.40 Percent 400,000 Principal Amount 12-29-2017 | Chilean Peso    
Cash and cash equivalent [Line items]    
Principal $ 400,000  
Annual rate 2.40%  
Time Deposit $ 400,053  
Banco Galicia, 12/7/2016 | Argentine Peso    
Cash and cash equivalent [Line items]    
Principal   $ 1,853
Annual rate   17.00%
Time Deposit   $ 1,879