LONG-TERM DEBT LONG-TERM DEBT - 6.5% Senior Notes (Details) - USD ($)
12 Months Ended
Dec. 31, 2016
Sep. 19, 2014
Jan. 30, 2014
Six Point Five Senior Notes due 2022 [Member] [Member]      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount     $ 500,000,000
Debt Instrument, Interest Rate, Effective Percentage     8.39%
Long-term Debt, Required Interest Coverage Ratio 2.00    
Debt Instrument, Minimum Interest Coverage Ratio Required for Incurring Additional Debt 4.00    
Six Point Five Senior Notes tack on due 2022 [Member]      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount   $ 150,000,000  
Prior to February 1, 2017 [Member] | Six Point Five Senior Notes due 2022 [Member] [Member]      
Debt Instrument [Line Items]      
Long-term Debt, Redemption Price, Percentage of Outstanding Principal 100.00%    
Prior to February 1, 2017 [Member] | Six Point Five Senior Notes due 2022 [Member] [Member] | Debt Instrument, Redemption, Period One [Member]      
Debt Instrument [Line Items]      
Long-term Debt, Redemption Price Plus Premium, Percentage of Outstanding Principal 106.50%    
Maximum [Member] | Prior to February 1, 2017 [Member] | Six Point Five Senior Notes due 2022 [Member] [Member]      
Debt Instrument [Line Items]      
Long-term Debt, Authorized Redemption Amount, Percentage of Outstanding Principal at 106 Point 50 Redemption Price 40.00%    
equity offering threshold [Member] | Prior to February 1, 2017 [Member] | Six Point Five Senior Notes due 2022 [Member] [Member] | Debt Instrument, Redemption, Period One [Member]      
Debt Instrument [Line Items]      
Long-term Debt, Required Remaining Amount Outstanding for Redemption at 106 Point 50 Percent 50.00%    
Debt Limitation One [Member] | Six Point Five Senior Notes due 2022 [Member] [Member]      
Debt Instrument [Line Items]      
Maximum borrowing threshold on credit facility under six point five percent notes $ 350,000,000    
Maximum indebtedness under six point five percent notes 575,000,000    
Purchase Money Indebtedness [Member] | Debt Limitation Two [Member] | Six Point Five Senior Notes due 2022 [Member] [Member]      
Debt Instrument [Line Items]      
Purchase money indebtedness threshold under six point five percent notes 35,000,000    
Purchase Money Indebtedness [Member] | Debt Limitation Three [Member] [Member] | Six Point Five Senior Notes due 2022 [Member] [Member]      
Debt Instrument [Line Items]      
Purchase money indebtedness threshold under six point five percent notes 0.10    
Debt of Foreign Subsidiaries [Member] | Debt Limitation Two [Member] | Six Point Five Senior Notes due 2022 [Member] [Member]      
Debt Instrument [Line Items]      
foreign debt threshold under the six point five percent notes 60,000,000    
Debt of Foreign Subsidiaries [Member] | Debt Limitation Three [Member] [Member] | Six Point Five Senior Notes due 2022 [Member] [Member]      
Debt Instrument [Line Items]      
foreign debt threshold under the six point five percent notes 0.15    
General Debt Basket [Member] | Debt Limitation Two [Member] | Six Point Five Senior Notes due 2022 [Member] [Member]      
Debt Instrument [Line Items]      
general debt basket threshold under the six point five percent notes 75,000,000    
General Debt Basket [Member] | Debt Limitation Three [Member] [Member] | Six Point Five Senior Notes due 2022 [Member] [Member]      
Debt Instrument [Line Items]      
general debt basket threshold under the six point five percent notes $ 0.20