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      <Label>Derivatives and Financial Instruments [Abstract]</Label>
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      <Label>DERIVATIVES AND FINANCIAL INSTRUMENTS</Label>
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   &lt;!-- Begin Block Tagged Note 6 - us-gaap:DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock--&gt;
   &lt;div style="font-family: 'Times New Roman',Times,serif; margin-left: 0in; "&gt;
   &lt;div align="justify" style="font-size: 10pt; margin-top: 10pt"&gt;&lt;b&gt;NOTE 6. DERIVATIVES AND FINANCIAL INSTRUMENTS&lt;/b&gt;
   &lt;/div&gt;
   &lt;div align="justify" style="font-size: 10pt; margin-top: 10pt"&gt;&lt;b&gt;&lt;i&gt;Cash Flow Hedging&lt;/i&gt;&lt;/b&gt;
   &lt;/div&gt;
   &lt;div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 4%"&gt;We have a foreign currency hedging program to mitigate the change in value of forecasted
   payroll transactions and related costs denominated in euros. We are hedging a portion of these
   payroll and related costs using forward contracts. When the U.S. dollar strengthens against the
   euro, the decline in the value of the forward contracts is offset by lower future payroll costs.
   Conversely, when the U.S. dollar weakens, the increase in value of forward contracts offsets higher
   future payroll costs. When effective, these transactions should generate cash flows that directly
   offset the cash flow effect from changes in the value of our forecasted euro-denominated payroll
   transactions. The maximum amount of time that we are hedging our exposure to euro-denominated
   forecasted payroll costs is six months. The aggregate notional amount of these forward contracts,
   expressed in U.S. dollars, was $5.7&amp;#160;million at September&amp;#160;30, 2010.
   &lt;/div&gt;
   &lt;div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 4%"&gt;All of our foreign currency forward contracts were accounted for as cash flow hedges under ASC
   Topic 815, &lt;i&gt;Derivatives and Hedging&lt;/i&gt;. The fair market value of these derivative instruments is
   included in other current assets or accrued expenses and other current liabilities, with the
   cumulative unrealized gain or loss included in accumulated other comprehensive income in our
   consolidated balance sheet. The payroll and related costs that are being hedged are included in
   accrued expenses and other current liabilities in our consolidated balance sheet, with the realized
   gain or loss associated with the revaluation of these liabilities from euros to U.S. dollars
   included in other income (expense). Amounts recorded in accumulated other comprehensive income
   associated with the derivative instruments are subsequently reclassed into other income (expense)
   as earnings are affected by the underlying hedged forecasted transactions. The estimated fair
   market value of our outstanding foreign currency forward contracts resulted in an asset of
   approximately $0.4&amp;#160;million at September&amp;#160;30, 2010. Hedge effectiveness is measured quarterly based
   on the relative cumulative changes in fair value between derivative contracts and the hedged item
   over time. Any change in fair value resulting from ineffectiveness is recognized immediately in
   earnings and recorded to other income (expense). We did not recognize a gain or loss due to hedge
   ineffectiveness in our consolidated statements of operations for the nine months ended September
   30, 2010 related to these derivative instruments.
   &lt;/div&gt;
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   &lt;div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 4%"&gt;The balance of the net unrealized gain (loss)&amp;#160;related to our foreign currency forward
   contracts in accumulated other comprehensive income is as follows:
   &lt;/div&gt;
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   &lt;div style="margin-left:15px; text-indent:-15px"&gt;Activity during period:
   &lt;/div&gt;&lt;/td&gt;
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       &lt;td&gt;&amp;#160;&lt;/td&gt;
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   &lt;div style="margin-left:30px; text-indent:-15px"&gt;Settlement of forward contracts outstanding at beginning of period
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   &lt;div style="margin-left:30px; text-indent:-15px"&gt;Net unrealized gain on outstanding foreign currency forward contracts
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      <ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 133
 -Paragraph 45

Reference 2: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 133
 -Paragraph 44

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