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Note 12 - Business Segment, Geographic, Major Customer And Related Party Information (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Number of Operating Segments 1    
Entity-Wide Revenue, Major Customer, Percentage 10.00% 10.00%  
HMRTech LLC [Member]
     
Related Party Transaction, Amounts of Transaction (in Dollars) 0.1 0.6  
Due to Related Parties, Current (in Dollars) 0.1   0.2
HMRTech LLC [Member]
     
Equity Method Investment, Ownership Percentage 40.00% 40.00%  
Sales Revenue, Goods, Net [Member]
     
Number of Customers 0 0  
Accounts Receivable [Member]
     
Number of Customers 0    
Entity-Wide Revenue, Major Customer, Percentage   0.00%  
Concentration Risk, Percentage 10.00%   10.00%