Note 13 - Segment and Geographical Information (Details) - Reconciliation of Segment Profit to the Consolidated Statement of Comprehensive Loss (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Reconciliation of Segment Profit to the Consolidated Statement of Comprehensive Loss [Abstract]
Segment Profit	$ 97,461	[1],[2]	$ 79,789	[1],[2]	$ 63,304	[1],[2]
Depreciation and amortization	(62,748)	[1],[2]	(58,551)	[1],[2]	(47,439)	[1],[2]
Share-based compensation expense	(17,157)		(13,756)		(7,834)
Acquisition related transaction costs	(2,134)		(1,655)		(3,107)
Other expenses	(1,353)		(702)		(878)
Income from operations	$ 14,069		$ 5,125		$ 4,046

[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.