Note 13 - Segment and Geographical Information (Detail) - Long-Lived Assets by Geographic Area (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012		Dec. 31, 2011
Long-lived assets: (1)
Long-lived Assets by Country	$ 437,105	[1]	$ 455,784	[1]
United States [Member]
Long-lived assets: (1)
Long-lived Assets by Country	329,191		340,955
Canada [Member]
Long-lived assets: (1)
Long-lived Assets by Country	36,970		42,377
United Kingdom [Member]
Long-lived assets: (1)
Long-lived Assets by Country	$ 70,944		$ 72,452

[1] Long-lived assets are noncurrent assets excluding deferred tax assets and deferred financing costs.