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Fair Value Measurements and Interest Rate Swaps (Tables)
3 Months Ended
Mar. 31, 2013
Fair Value Disclosures [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):

 
 
Fair Value at
 
 
March 31,
Level 2
 
2013
 
2012
Unrealized Losses on Interest Rate Swaps
 
$
(3,061
)
 
$
(551
)
Unrealized Gains on Interest Rate Swaps
 

 
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