v2.4.0.6
LONG-TERM DEBT LIABILITIES - Senior Unsecured Debt (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Debt Instrument [Line Items]  
Senior Notes $ 220,000,000
Net Proceeds 212,700,000
Debt Instrument Original Issue Discount 2,900,000
Minimum denominations $ 2,000
Senior Unsecured Debt | On or After December 1, 2015
 
Debt Instrument [Line Items]  
Redemption of the principal amount 105.25%
Senior Unsecured Debt | After December 1, 2016
 
Debt Instrument [Line Items]  
Redemption of the principal amount 102.63%