2.2.0.25falsefalse0203 - Disclosure - Net Income per Sharetruefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011
USD ($)
USD ($) / shares
$Jan-01-2011_Mar-31-2011http://www.sec.gov/CIK0001131096duration2011-01-01T00:00:002011-03-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDEPSDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0us-gaap_EarningsPerShareAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse| 1falsefalsefalse00falsefalsefalsefalsefalse | Otherxbrli:stringItemTypestringNo definition available.falsefalse
3false0us-gaap_EarningsPerShareTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel| 1falsefalsefalse00<!--DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" -->
<!-- Begin Block Tagged Note 3 - us-gaap:EarningsPerShareTextBlock-->
<div style="font-family: 'Times New Roman',Times,serif">
<div align="left" style="font-size: 10pt; margin-top: 12pt"><b>3. NET INCOME PER SHARE</b>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     Basic net income per share is computed by dividing net income by the weighted average number
of common shares outstanding during the period. Diluted net income per share is computed by
dividing net income by the weighted average number of common shares outstanding and potentially
dilutive securities outstanding during the period under the treasury stock method. Potentially
dilutive securities include stock options, warrants, shares to be purchased under the employee
stock purchase plan, and restricted stock units. Under the treasury stock method, dilutive
securities are assumed to be exercised at the beginning of the periods and as if funds obtained
thereby were used to purchase common stock at the average market price during the period.
Securities are excluded from the computations of diluted net income per share if their effect would
be antidilutive to earnings per share.
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     The following table reconciles the weighted average shares outstanding for basic and diluted
net income per share for the periods indicated.
</div>
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="76%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2">Three Months Ended</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2">Three Months Ended</td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2">March 31, 2011</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2">March 31, 2010</td>
<td> </td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="7" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Net income
</div></td>
<td> </td>
<td align="left">$</td>
<td align="right">3,251</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">277</td>
<td> </td>
</tr>
<tr valign="bottom"><!-- Blank Space -->
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Weighted average shares used in computing basic net income per share
</div></td>
<td> </td>
<td> </td>
<td align="right">34,678</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">34,014</td>
<td> </td>
</tr>
<tr valign="bottom"><!-- Blank Space -->
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Net income per share — basic
</div></td>
<td> </td>
<td align="left">$</td>
<td align="right">0.09</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">0.01</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
</tr>
<tr valign="bottom"><!-- Blank Space -->
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Net income
</div></td>
<td> </td>
<td align="left">$</td>
<td align="right">3,251</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">277</td>
<td> </td>
</tr>
<tr valign="bottom"><!-- Blank Space -->
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Weighted average shares used in computing basic net income per share
</div></td>
<td> </td>
<td> </td>
<td align="right">34,678</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">34,014</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Effect of dilutive securities
</div></td>
<td> </td>
<td> </td>
<td align="right">979</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,187</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Weighted average shares used in computing diluted net income per share
</div></td>
<td> </td>
<td> </td>
<td align="right">35,657</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">35,201</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Net income per share — diluted
</div></td>
<td> </td>
<td align="left">$</td>
<td align="right">0.09</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">0.01</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     The computation of diluted net income per share does not include 909 and 963 stock
options for the three months ended March 31, 2011, and March 31, 2010, respectively, because their
inclusion would have an antidilutive effect on net income per share.
</div>
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</div>
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<div style="font-family: 'Times New Roman',Times,serif">
<div align="center" style="font-size: 10pt; margin-top: 0pt">
<b>
</b>
<b>
<u>
</u>
</b>
<b>
</b>
</div>
</div>
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<!-- Begin Block Tagged Notefalsefalsefalsefalsefalse | Otherus-types:textBlockItemTypestringThis element may be used to capture the complete disclosure pertaining to an entity's earnings per share.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
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