Annual report pursuant to Section 13 and 15(d)

GUARANTORS OF SECURITIES (Details)

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GUARANTORS OF SECURITIES (Details)
Dec. 31, 2018
Dec. 31, 2017
Dec. 07, 2012
Senior Unsecured Notes Due December 15, 2022 | Senior Notes      
Debt Instrument [Line Items]      
Stated interest rate 7.75% 7.75% 7.75%