2.2.0.25falsefalse006130 - Disclosure - INCOME TAXEStruefalsefalse1falsefalseUSDfalsefalse10/1/2010 - 12/31/2010 USD ($) USD ($) / shares $c00005http://www.sec.gov/CIK0001102934duration2010-10-01T00:00:002010-12-31T00:00:00u000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u001Standardhttp://www.xbrl.org/2003/instancesharesxbrli0u002Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0ccmp_NotesToFinancialStatementsAbstractccmpfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseNotes to Financial Statements [Abstract]3false0us-gaap_IncomeTaxDisclosureTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">12. INCOME TAXES</font></div><div style="DISPLAY: block; TEXT-INDENT: 0pt"><br /></div><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="MARGIN-LEFT: 18pt"></font>Our effective income tax rate was 29.8% for the three months ended December 31, 2010 compared to a 35.4% effective income tax rate for the three months ended December 31, 2009.&#160;&#160;The decrease in the effective tax rate during the first quarter of fiscal 2011 reflects the election that we made in the fourth quarter of fiscal 2010 to permanently reinvest the earnings of certain of our foreign subsidiaries outside of the U.S. rather than repatriate those earnings to the U.S., and the reinstatement of the U.S. research and experimentation tax credit in December 2010, which is retroactively effective as of January 1, 2010.&#160;&#160;These decreases were partially offset by the impact of the reversal of a $497 deferred tax asset related to certain share-based compensation expense, as discussed in Note 1 under the heading &#8220;Results of Operations&#8221;.</font></div>12. INCOME TAXESOur effective income tax rate was 29.8% for the three months ended December 31, 2010 compared to a 35.4% effective income tax rate for thefalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescription containing the entire income tax disclosure. Examples include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. This element may be used as a single block of text to encapsulate the entire disclosure including data and tables.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 136, 172 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 43, 44, 45, 46, 47, 48, 49 falsefalseINCOME TAXES12INCOME TAXESUnKnownUnKnownUnKnownUnKnownfalsetrue