Note 14 - Business Segment, Geographic, Major Customer And Related Party Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Number of Operating Segments	1
Entity-Wide Revenue, Major Customer, Percentage	10.00%
Contract Settlement Claim [Member] | HMRTech LLC [Member]
Related Party Transaction, Other Revenues from Transactions with Related Party	$ 2.4
HMRTech LLC [Member]
Related Party Transaction, Amounts of Transaction	1.7	2.1	1.9
Due to Related Parties, Current	0.2	0.5
Related Party Dividends	$ 2.5	$ 0.1	$ 0.2
HMRTech LLC [Member]
Equity Method Investment, Ownership Percentage	40.00%
Sales Revenue, Goods, Net [Member]
Number of Customers	0
Accounts Receivable [Member]
Number of Customers	0
Concentration Risk, Percentage	10.00%