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Fair Value Measurements (Schedule Of Company's Financial Assets And (Liabilities) At Fair Value On A Recurring Basis) (Details) (USD $) In Thousands | Jun. 30, 2011 | Dec. 31, 2010
--- | --- | ---
Money market investment | $ 8,000 | $ 96,730
Available for sale securities | 2,353 |
Contingent consideration | (2,707) |
Interest rate agreements | (1,161) | (2,328)
Foreign currency contracts |  | 176
Fair Value, Inputs, Level 1 [Member] |  |
Money market investment | 8,000 | 96,730
Available for sale securities | 2,353 |
Contingent consideration |  |
Interest rate agreements |  |
Foreign currency contracts |  |
Fair Value, Inputs, Level 2 [Member] |  |
Money market investment |  |
Available for sale securities |  |
Contingent consideration |  |
Interest rate agreements | (1,161) | (2,328)
Foreign currency contracts |  | 176
Fair Value, Inputs, Level 3 [Member] |  |
Money market investment |  |
Available for sale securities |  |
Contingent consideration | (2,707) |
Interest rate agreements |  |
Foreign currency contracts |  |

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- Definition Contingent consideration fair value disclosure + Details
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- Definition Money market investment fair value disclosure + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 12 -Subparagraph b + Details
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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents contracts related to the exchange of different currencies, including foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into and existing as of the balance sheet date. + Details
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- Definition Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 10 + Details
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Balance Type: | credit
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