Supplemental Consolidated Balance Sheet Information (Components of Prepaid Expenses and Other Current Assets) (Details) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Supplemental Consolidated Balance Sheet Information
Notes receivable - current	$ 7,726	$ 6,934
Prepaid income taxes	3,287
Other prepaid expenses and other current assets	15,280	12,763
Prepaid expenses and other current assets	$ 26,293	$ 19,697

Amounts due from parties associated with the reporting entity as evidenced by a written promise to pay, due within 1 year (or 1 business cycle).

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The total of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer, and the aggregate carrying amount of current assets, as of the balance sheet date, not separately presented elsewhere in the balance sheet. Current assets are expected to be realized or consumed within one year (or the normal operating cycle, if longer).

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- Definition

Carrying amount as of the balance sheet date of payments made in advance for income and other taxes, which will be charged against earnings within one year or the normal operating cycle, if longer.

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