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Consolidated Statement of Stockholders' Equity (Unaudited) (Parenthetical) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011
Interest rate swap adjustment, tax provision	$ 188
Unrealized loss on investments, tax benefit	7
Accumulated Other Comprehensive Income (Loss) Unrealized Gains (Losses) on Interest Rate Swaps
Interest rate swap adjustment, tax provision	188
Accumulated Other Comprehensive Income (Loss) Unrealized Gains (Losses) on Marketable Securities
Unrealized loss on investments, tax benefit	$ 7

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. The change includes an entity's share of an equity investee's increase or decrease in deferred hedging gains or losses. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.

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- Definition

Tax effect on gross appreciation or the gross loss in value of the total of unsold securities during the period being reported on.

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