Note 8 - Derivative Financial Instruments (Detail) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Nov. 30, 2011
Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net	$ 100,000	$ 0.1
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	600,000
Notional Amount of Interest Rate Derivatives			83,000,000
Fair Value Hierarchy, Number of Tiers	3
CRTS [Member]
Business Acquisition, Contingent Consideration, at Fair Value	6,000,000
Fyfe LA [Member]
Business Acquisition, Contingent Consideration, at Fair Value	$ 300,000