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Stockholders’ Equity - ESPP and Other Disclosures (Details) - Employee Stock Purchase Plan shares in Thousands	Feb. 01, 2012 USD ($) shares
Employee Stock Purchase Plan
Term of employee stock purchase plan	10 years
Total number of shares available for purchase (shares)	500
ESPP participation period	6 months
Percentage of fair market value of common stock	85.00%
Maximum percentage of total combined voting power a participant is allowed to be granted a right to purchase common stock	5.00%
Maximum common shares available for purchase (shares)	1
Maximum value of common shares available for purchase | $	$ 25,000

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- Definition

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+ References

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- Definition

Common Stock, Maximum Value of Shares Authorized Within any Calendar Year

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- Definition

The period of time that employees participate through payroll withholdings in the Employee Stock Purchase Plan.

+ References

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- Definition

Represents the term of Employee Stock Purchase Plan to all active employees.

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- Definition

Aggregate number of common shares reserved for future issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Maximum number of shares that may be issued in accordance with the plan as a proportion of outstanding capital stock.

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- Definition

Purchase price of common stock expressed as a percentage of its fair value.

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