v2.4.0.8

Equity Incentive Plans Summary of Weighted Average Assumptions Used to Compute Fair Value of Stock Option Grants (Details) (USD $)	12 Months Ended
	Dec. 31, 2010
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Expected life	6 years 5 months
Risk-free interest rate	3.17%
Volatility	43.90%
Dividend Yield	0.00%
Weighted average fair value of options granted	$ 4.77

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Name Staff Accounting Bulletin (SAB)

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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The range of expected volatilities used and the weighted-average expected volatility for an entity using a valuation technique with different volatilities during the contractual term.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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