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Condensed Consolidated Statements of Other Comprehensive Income (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Net income $ 5,434 $ 10,381 $ 11,172 $ 35,148
Other comprehensive income:        
Unrealized gain on derivative financial instruments       94
Amortized gain on derivative financial instruments   381   536
Total other comprehensive income   381   630
Comprehensive income $ 5,434 $ 10,762 $ 11,172 $ 35,778