Note 13 - Segment and Geographical Information (Tables)

3 Months Ended

Mar. 31, 2013

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

Revenues:	For the three months ended March 31,
	2012		2013
United States	$	87,195	$	91,178
Canada		6,886		7,421
United Kingdom		29,657		33,767
Australia		—		16,337
Total	$	123,738	$	148,703

Disclosure on Geographic Areas, Long-Lived Assets

Long-lived assets: (1)	December 31, 2012		March 31, 2013
United States	$	337,831	$	329,947
Canada		34,919		31,995
United Kingdom		99,140		92,641
Australia		94,291		92,190
Total	$	566,181	$	546,773