Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical)

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Unrealized gain (loss) due to fair value adjustments on interest rate swap agreements, tax $ 557 $ 3,786 $ 4,339
Unrealized gain (loss) due to fair value adjustments on available-for-sale securities, tax $ 1,499 $ 8,128 $ 3,425