Note 1 - General (Detail) - Consideration Recorded to Acquire Fyfe Asia (Fyfe Asia [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2012		Apr. 30, 2012	Mar. 31, 2012
Fyfe Asia [Member]
Total cash consideration recorded(1)	$ 40,144	[1]	$ 40,700	$ 40,700

[1] Includes the cash purchase price at closing of $40.7 million plus a final working capital adjustment of $0.6 million, which was returned to the Company during the fourth quarter of 2012.