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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]  
AOCI at the beginning of the period $ (11,841)
OCI before reclassifications 35,035
Amounts reclassified from AOCI (7,431)
Net current-period OCI 27,604
AOCI at the end of the period 15,763
Net Unrealized Gain (Loss) on Cash Flow Hedges [Member]
 
Accumulated Other Comprehensive Income (Loss) [Line Items]  
AOCI at the beginning of the period (16,057)
OCI before reclassifications 14,194
Amounts reclassified from AOCI (7,431)
Net current-period OCI 6,763
AOCI at the end of the period (9,294)
Net Unrealized Gain on Investments [Member]
 
Accumulated Other Comprehensive Income (Loss) [Line Items]  
AOCI at the beginning of the period 4,216
OCI before reclassifications 20,841
Amounts reclassified from AOCI 0
Net current-period OCI 20,841
AOCI at the end of the period $ 25,057