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Disclosure of Fair Value of Financial Instruments Disclosure of Fair Value of Financial Instruments (Tables)
9 Months Ended
Sep. 30, 2012
Fair Value Disclosures [Abstract]  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
 
 
Carrying Value
 
Fair Value
 
Fair Value Above (Below) Carrying Value
Long-term debt at December 31, 2011 (1)
 
$
2,083,462

 
$
2,215,219

 
$
131,757

 
 
 
 
 
 
 
Payoffs and amortization of long-term debt (1)
 
(258,203
)
 
(258,203
)
 
 
New long-term debt (1)
 
427,481

 
427,481

 
 
Changes in fair value assumptions (1)
 
 
 
103,044

 
103,044

 
 
 
 
 
 
 
Long-term debt at September 30, 2012 (1)
 
$
2,252,740

 
$
2,487,541

 
$
234,801


(1) Does not include the Company's credit facility.