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CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Parenthetical) (USD $)
In Thousands
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
CONDENSED CONSOLIDATED STATEMENTS OF INCOME    
Amortization of debt discounts, premiums and deferred financing fees$ 1,515$ 1,784$ 5,467$ 5,260