XML 23 R47.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Stock-Based Compensation (Narrative) (Details) | 3 Months Ended
--- | ---
Mar. 25, 2012 plans
Share-based Compensation [Abstract] |
Number of equity-based compensation plans | 1
Employee stock plan purchase discount | 15.00%
Number of opportunities to purchase common stock at discount, per year | 2

X
- Definition Share-based Compensation, Common Stock Purchase Terms, Per Year + References No definition available. + Details
Name: | cree_ShareBasedCompensationCommonStockPurchaseTermsPerYear
Namespace Prefix: | cree_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based Compensation, Equity-based Compensation Plan, Number + References No definition available. + Details
Name: | cree_ShareBasedCompensationEquityBasedCompensationPlanNumber
Namespace Prefix: | cree_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ShareBasedCompensationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The discount rate from market value on purchase date that participants pay for shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration