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	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Condensed Income Statements, Captions [Line Items]
Revenues	$ 616,016		$ 521,237		$ 397,860
Costs and expenses:
Costs of revenues	405,329		344,051		262,242
Selling, general and administrative expenses	133,870		113,510		84,133
Depreciation and amortization	62,748	[1],[2]	58,551	[1],[2]	47,439	[1],[2]
Total costs and expenses	601,947		516,112		393,814
Income (loss) from operations	14,069		5,125		4,046
Interest and other expenses, net	29,641		28,051		16,461
Income (loss) before income taxes	(15,572)		(22,926)		(12,415)
Provision (benefit) for income taxes	(5,356)		(7,987)		(4,082)
Net loss	(10,216)		(14,939)		(8,333)
Net income (loss)	(10,216)		(14,939)		(8,333)
Consolidation, Eliminations [Member]
Costs and expenses:
Net income (loss) of consolidated subsidiaries	13,998		10,346		9,402
Net income (loss)	13,998		10,346		9,402
Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Revenues	374,817		340,200		298,056
Costs and expenses:
Costs of revenues	264,999		241,281		203,651
Selling, general and administrative expenses	70,681		60,255		55,139
Depreciation and amortization	31,787		34,339		34,081
Total costs and expenses	367,467		335,875		292,871
Income (loss) from operations	7,350		4,325		5,185
Interest and other expenses, net	22,107		24,411		14,148
Income (loss) before income taxes	(14,757)		(20,086)		(8,963)
Provision (benefit) for income taxes	(11,540)		(10,320)		(5,331)
Net loss	(3,217)		(9,766)		(3,632)
Net income (loss) of consolidated subsidiaries	(6,999)		(5,173)		(4,701)
Net income (loss)	(10,216)		(14,939)		(8,333)
Non-Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Revenues	241,199		181,037		99,804
Costs and expenses:
Costs of revenues	140,330		102,770		58,591
Selling, general and administrative expenses	63,189		53,255		28,994
Depreciation and amortization	30,961		24,212		13,358
Total costs and expenses	234,480		180,237		100,943
Income (loss) from operations	6,719		800		(1,139)
Interest and other expenses, net	7,534		3,640		2,313
Income (loss) before income taxes	(815)		(2,840)		(3,452)
Provision (benefit) for income taxes	6,184		2,333		1,249
Net loss	(6,999)		(5,173)		(4,701)
Net income (loss)	(6,999)		(5,173)		(4,701)
Parent Company [Member]
Costs and expenses:
Net income (loss) of consolidated subsidiaries	(6,999)		(5,173)		(4,701)
Net income (loss)	$ (6,999)		$ (5,173)		$ (4,701)

[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.