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Fair Value Measurements and Interest Rate Swaps (Tables)
3 Months Ended
Mar. 31, 2012
Fair Value Measurements and Interest Rate Swaps [Abstract]  
Schedule of Interest Rate Derivatives
The following table provides additional details related to each of these swap contracts:
 
Derivative
 
Effective Date
 
Notional
Amount
(in millions)
 
Fixed
Interest
Rate
Interest rate swap 1
 
November 21, 2011
 
$25.0
 
1.185%
Interest rate swap 2
 
November 21, 2011
 
$25.0
 
1.185%
Interest rate swap 3
 
December 21, 2011
 
$50.0
 
1.100%
Interest rate swap 4
 
January 17, 2012
 
$25.0
 
1.050%
Interest rate swap 5
 
January 19, 2012
 
$25.0
 
0.990%

Estimated fair value of swap contracts
The table below presents the estimated fair value of our interest rate swap contracts (in thousands):
 
   
Unrealized Gains (Losses)
at March 31,
 
Balance Sheet Line Item
   
2012
   
2011
 
Prepaid expenses and other current assets
 
$
40
 
$
 
Accrued expenses and other current liabilities
   
(551
)
 
(2,645
)