Note 12 - Business Unit Segment Information (Detail) - Long-lived Assets by Geographical Area (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012		Dec. 31, 2011
Long-lived assets	$ 289,456	[1]	$ 279,164	[1]
United States [Member]
Long-lived assets	90,686		92,482
China [Member]
Long-lived assets	42,808		45,466
Canada [Member]
Long-lived assets	41,361		42,299
Other Countries [Member]
Long-lived assets	$ 114,601		$ 98,917

[1] Long-lived assets includes net property, plant and equipment, intangible assets, net of amortization, and goodwill.