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Note 16. Acquisitions (Detail) (USD $)	1 Months Ended
Note 16. Acquisitions (Detail) (USD $)	Dec. 31, 2011	Feb. 28, 2008
Business Acquisition, Percentage of Voting Interests Acquired	30.00%
Stock Issued During Period, Shares, Acquisitions (in Shares)		5,395,683
Stock Issued During Period, Value, Acquisitions	$ 33.8	$ 30,000,000

Number of shares of stock issued during the period pursuant to acquisitions.

Value of stock issued pursuant to acquisitions during the period.