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Note 16 - Supplemental Cash Flow Information (Detail)	12 Months Ended
Note 16 - Supplemental Cash Flow Information (Detail)	Dec. 31, 2012	Dec. 31, 2011
Stock Repurchased During Period, Shares	34,073	8,491
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	138,252	117,846
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	41,596	10,900

Number of share options (or share units) exercised during the current period.

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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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