Note 14 - Condensed Consolidating Financial Information of Guarantor Subsidiaries (Details) - Condensed Consolidating Statement of Operations and Comprehensive Income (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
Condensed Income Statements, Captions [Line Items]
Revenues	$ 196,445		$ 156,148		$ 369,473		$ 304,851
Costs and expenses:
Costs of revenues	124,851		102,118		235,886		199,502
Selling, general and administrative expenses	42,590		34,076		83,118		67,333
Depreciation and amortization	14,858	[1],[2]	15,822	[1],[2]	29,200	[1],[2]	32,148	[1],[2]
Total costs and expenses	182,299		152,016		348,204		298,983
Income from operations	14,146		4,132		21,269		5,868
Interest and other expenses, net	8,095		7,700		15,672		15,230
Income (loss) before income taxes	6,051		(3,568)		5,597		(9,362)
Provision (benefit) for income taxes	2,519		(785)		2,354		(2,987)
Net income (loss) before earnings of consolidated subsidiaries	3,532		(2,783)		3,243		(6,375)
Net income (loss)	3,532		(2,783)		3,243		(6,375)
Consolidation, Eliminations [Member]
Costs and expenses:
Net income (loss) of consolidated subsidiaries	164		3,398		3,756		6,180
Net income (loss)	164		3,398		3,756		6,180
Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Revenues	117,343		95,493		223,392		186,671
Costs and expenses:
Costs of revenues	76,483		67,073		147,550		131,204
Selling, general and administrative expenses	21,846		17,280		43,551		35,404
Depreciation and amortization	8,168		8,256		15,888		16,879
Total costs and expenses	106,497		92,609		206,989		183,487
Income from operations	10,846		2,884		16,403		3,184
Interest and other expenses, net	6,116		5,788		11,808		11,347
Income (loss) before income taxes	4,730		(2,904)		4,595		(8,163)
Provision (benefit) for income taxes	1,116		(1,820)		(526)		(4,878)
Net income (loss) before earnings of consolidated subsidiaries	3,614		(1,084)		5,121		(3,285)
Net income (loss) of consolidated subsidiaries	(82)		(1,699)		(1,878)		(3,090)
Net income (loss)	3,532		(2,783)		3,243		(6,375)
Non-Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Revenues	79,102		60,655		146,081		118,180
Costs and expenses:
Costs of revenues	48,368		35,045		88,336		68,298
Selling, general and administrative expenses	20,744		16,796		39,567		31,929
Depreciation and amortization	6,690		7,566		13,312		15,269
Total costs and expenses	75,802		59,407		141,215		115,496
Income from operations	3,300		1,248		4,866		2,684
Interest and other expenses, net	1,979		1,912		3,864		3,883
Income (loss) before income taxes	1,321		(664)		1,002		(1,199)
Provision (benefit) for income taxes	1,403		1,035		2,880		1,891
Net income (loss) before earnings of consolidated subsidiaries	(82)		(1,699)		(1,878)		(3,090)
Net income (loss)	(82)		(1,699)		(1,878)		(3,090)
Parent Company [Member]
Costs and expenses:
Net income (loss) of consolidated subsidiaries	(82)		(1,699)		(1,878)		(3,090)
Net income (loss)	$ (82)		$ (1,699)		$ (1,878)		$ (3,090)

[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.