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Consolidated Statements Of Comprehensive Income (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Consolidated Statements Of Comprehensive Income [Abstract]
Change in fair value of interest rate swap agreement designated as a cash flow hedge, tax	$ (33)	$ (36)
Unrealized gains (losses) arising during the period, tax		(32)
Reclassification adjustment for losses included in net income, tax		(139)
Unrealized (losses) gains arising during the period, tax	647	(675)
Reclassification adjustment for accumulated gains included in net income, tax	$ 198	$ 26

X

- Definition

Total tax effect of the change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges that is attributable to the parent entity. The change includes an entity's share of an equity investee's increase (decrease) in deferred hedging gains or losses.

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Tax effect on the reclassification adjustment for gains or losses realized upon the sale of securities during the period.

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