INCOME TAXES - Non operating losses (Details) $ in Thousands	Dec. 31, 2015 USD ($)
United States
Income Tax [Line Items]
Non operating losses	$ 158,974
Mexico
Income Tax [Line Items]
Non operating losses	57,822
Canada
Income Tax [Line Items]
Non operating losses	20,349
Argentina
Income Tax [Line Items]
Non operating losses	$ 85,878