Note 23: Stock Option And Compensation Plans (Detail) - Share-Based Payment Award, Stock Options, Valuation Assumptions	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010
Weighted-average risk-free interest rate	2.48%	1.50%
Weighted-average expected option lives (years)	6 years	6 years
Expected option lives (years)	6 years	6 years
Weighted-average volatility	59.00%	57.00%
Weighted-average expected dividend yield	0.00%	0.00%
Expected dividend yields	0.00%	0.00%
Minimum [Member]
Risk-free interest rates	2.20%	1.50%
Expected volatilities	59.00%	45.00%
Maximum [Member]
Risk-free interest rates	2.50%	2.90%
Expected volatilities	60.00%	58.00%

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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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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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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Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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 expected term of a nonvested share or option award issued to other than an employee.

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The risk-free interest rate assumption that is used in valuing a nonvested share or option award issued to other than an employee.

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