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USD ($)

USD ($) / shares

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&lt;tr&gt;&lt;td valign="top" width="4%" align="left"&gt;&lt;font style="font-family: Times New Roman;" class="_mt" size="2"&gt;(7)&lt;/font&gt;&lt;/td&gt;
&lt;td valign="top" align="left"&gt;&lt;font style="font-family: Times New Roman;" class="_mt" size="2"&gt;Subsequent Events &lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;

&lt;p style="margin-top: 6px; margin-bottom: 0px;"&gt;&lt;font style="font-family: Times New Roman;" class="_mt" size="2"&gt;&lt;i&gt; &lt;/i&gt;On April&amp;nbsp;11, 2011, our board of directors declared a dividend of $&lt;font class="_mt"&gt;0.26&lt;/font&gt; per share. This dividend is discussed in footnote (3)&amp;nbsp;&lt;i&gt;'Stockholders' Equity'. &lt;/i&gt;&lt;/font&gt;&lt;/p&gt;

&lt;p style="margin-top: 12px; margin-bottom: 0px;"&gt;&lt;font style="font-family: Times New Roman;" class="_mt" size="2"&gt;&lt;i&gt; &lt;/i&gt;On April&amp;nbsp;19, 2011, our board of directors declared a two-for-one stock split. This split is discussed in footnote (1)&amp;nbsp;&lt;i&gt;'Basis of Presentation'. &lt;/i&gt;&lt;/font&gt;&lt;/p&gt;

&lt;p style="margin-top: 12px; margin-bottom: 0px;"&gt;&lt;font style="font-family: Times New Roman;" class="_mt" size="2"&gt;On April&amp;nbsp;19, 2011, the compensation committee of our board of directors approved a grant, effective at the close of business that day, of options to purchase approximately 200 thousand shares of our common stock. This grant is discussed in footnote (3)&amp;nbsp;&lt;i&gt;'Stockholders' Equity'&lt;/i&gt;. &lt;/font&gt;&lt;/p&gt;&lt;/div&gt; &lt;/div&gt;</NonNumbericText><NonNumericTextHeader>(7)
Subsequent Events

 On April&amp;nbsp;11, 2011, our board of directors declared a dividend of $0.26 per share. This dividend is discussed in footnote</NonNumericTextHeader><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat><hasSegments>false</hasSegments><hasScenarios>false</hasScenarios></Cell></Cells><OriginalInstanceReportColumns /><Unit>Other</Unit><ElementDataType>us-types:textBlockItemType</ElementDataType><SimpleDataType>string</SimpleDataType><ElementDefenition>Describes disclosed significant events or transactions that occurred after the balance sheet date, but before the issuance of the financial statements. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, losses resulting from fire or flood, losses on receivables, significant realized and unrealized gains and losses that result from changes in quoted market prices of securities, declines in market prices of inventory, changes in authorized or issued debt (SEC), significant foreign exchange rate changes, substantial loans to insiders or affiliates, significant long-term investments, and substantial dividends not in the ordinary course of business.</ElementDefenition><ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 5
 -Paragraph 11

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