Note 3 - Summary of Significant Accounting Policies (Detail) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in Shares)	12,000
Stock Issued During Period, Shares, Restricted Stock Award, Gross (in Shares)	20,000
Administrative Expenses [Member]
Foreign Currency Transaction Gain (Loss), before Tax (in Dollars)	$ (1.7)	$ 0.9
Cost of Products [Member]
Foreign Currency Transaction Gain (Loss), before Tax (in Dollars)	$ 0.6	$ (0.9)

The aggregate foreign currency transaction gain (loss) (both realized and unrealized) included in determining net income for the reporting period. Excludes foreign currency transactions designated as hedges of net investment in a foreign entity and intercompany foreign currency transactions that are of a long-term nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements. For certain enterprises, primarily banks, that are dealers in foreign exchange, foreign currency transaction gains (losses) may be disclosed as dealer gains (losses).

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Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

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- Definition

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

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