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Interest Rate Contracts (Tables)
 3 Months Ended
Mar. 31, 2013
Interest Rate Contracts [Abstract]  
Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]
As of March 31, 2013, we had the following outstanding interest rate derivatives that were not designated for accounting purposes as hedging instruments, but were used to hedge our economic exposure to interest rate risk:
Interest Rate Derivative
 
Number of Instruments
 
Notional (in thousands)
Purchased Caps
 
4
 
$100,000
As of March 31, 2013, the totals of our existing swaps that qualified as highly effective cash flow hedges were as follows:

Interest Rate Derivative
 
Number of Instruments
 
Notional (in thousands)
Interest Rate Swaps
 
7
 
$1,828,080
Interest Rate Caps
 
2
 
$111,920
Effect Of Derivative Instruments On Consolidated Statements Of Operations
The following table represents the effect of derivative instruments on our consolidated statements of operations (in thousands) for the three months ended March 31:
 
2013
 
2012
Derivatives Designated as Cash Flow Hedges:
 
 
 
Amount of gain (loss) recognized in other comprehensive income (OCI) on derivatives (effective portion)
$
(1,880
)
 
$
(6,405
)
Amount of gain (loss) reclassified from AOCI into earnings under "interest expense" (effective portion)
$
(8,894
)
 
$
(15,916
)
Amount of gain (loss) on derivatives recognized in earnings under "interest expense" (ineffective portion and amount excluded from effectiveness testing) (1)
$
(21
)
 
$
(616
)
Derivatives Not Designated as Cash Flow Hedges:
 

 
 

Amount of realized and unrealized gain (loss) on derivatives recognized in earnings under "interest expense"
$
(3
)
 
$
(1
)

(1)
The three months ended March 31, 2012 includes a non-cash expense of $552 thousand related to the amortization of accumulated other comprehensive income balances on previously terminated swaps.
Schedule Of Fair Values Of Derivative Instruments
 
 
March 31, 2013
 
December 31, 2012
Derivative assets disclosed within "Other Assets":
 
 
 
Derivatives designated as accounting hedges
$
—

 
$
—

Derivatives not designated as accounting hedges
1

 
4

Total derivative assets
$
1

 
$
4

 
 
 
 
Derivative liabilities disclosed as "Interest Rate Contracts":
 

 
 

Derivatives designated as accounting hedges
$
93,280

 
$
100,294

Derivatives not designated as accounting hedges
—

 
—

Total derivative liabilities
$
93,280

 
$
100,294