CONDENSED CONSOLIDATING FINANCIAL INFORMATION (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Guarantor Subsidiary
CONDENSED CONSOLIDATING FINANCIAL INFORMATION
Percent of subsidiary owned by parent (as a percent)	100.00%
Threshold of outstanding indebtedness and preferred stock that guarantor subsidiary must be below in order to be released from guarantee under the circumstance that the gurantor subsidiary ceases to guarantee any other indebtedness of the Company	$ 25.0
7 1/4% Senior Notes due 2019
CONDENSED CONSOLIDATING FINANCIAL INFORMATION
Debt instrument, interest rate (as a percent)	7.25%	7.25%
7 1/4% Senior Notes due 2019 | Guarantor Subsidiary
CONDENSED CONSOLIDATING FINANCIAL INFORMATION
Debt instrument, interest rate (as a percent)	7.25%
7 1/2% Senior Notes due 2020
CONDENSED CONSOLIDATING FINANCIAL INFORMATION
Debt instrument, interest rate (as a percent)	7.50%	7.50%
7 1/2% Senior Notes due 2020 | Guarantor Subsidiary
CONDENSED CONSOLIDATING FINANCIAL INFORMATION
Debt instrument, interest rate (as a percent)	7.50%