Note 13 - Segment and Geographical Information (Details) - Reconciliation of Segment Profit to the Consolidated Statement of Comprehensive Loss (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Reconciliation of Segment Profit to the Consolidated Statement of Comprehensive Loss [Abstract]
Segment Profit	$ 34,579	[1],[2]	$ 25,006	[1],[2]	$ 62,589	[1],[2]	$ 48,011	[1],[2]
Depreciation and amortization	(14,858)	[1],[2]	(15,822)	[1],[2]	(29,200)	[1],[2]	(32,148)	[1],[2]
Share-based compensation expense	(4,627)		(4,283)		(9,980)		(8,414)
Acquisition related transaction costs	(762)		(458)		(1,954)		(907)
Other expenses	(186)		(311)		(186)		(674)
Income from operations	$ 14,146		$ 4,132		$ 21,269		$ 5,868

[1] For segment purposes, the Company defines segment profit as earnings before interest expenses, income taxes, depreciation and amortization, share-based compensation expenses, acquisition related transaction costs and other expenses. A consolidated reconciliation from segment profit to income from operations is included below.

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