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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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| 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 |
| X | ||||||||||
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- Definition
Tax effect of the change in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Also includes an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Tax effect of unrealized holding gain (loss) before reclassification adjustments and transfers on available-for-sale securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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