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				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Condensed Income Statements, Captions [Line Items]
Revenues	$ 204,078		$ 152,354		$ 573,551		$ 457,205
Costs and expenses:
Costs of revenues	130,597		100,831		366,483		300,333
Selling, general and administrative expenses	43,534		31,620		126,652		98,953
Depreciation and amortization	15,705	[1],[2]	15,910	[1],[2]	44,905	[1],[2]	48,058	[1],[2]
Total costs and expenses	189,836		148,361		538,040		447,344
Income from operations	14,242		3,993		35,511		9,861
Interest and other expenses, net	8,355		7,316		24,027		22,546
Income (loss) before income taxes	5,887		(3,323)		11,484		(12,685)
Provision (benefit) for income taxes	2,472		(1,072)		4,826		(4,059)
Net income (loss) before earnings of consolidated subsidiaries	3,415		(2,251)		6,658		(8,626)
Net income (loss)	3,415		(2,251)		6,658		(8,626)
Consolidation, Eliminations [Member]
Costs and expenses:
Net income (loss) of consolidated subsidiaries	(1,176)		7,576		2,580		13,756
Net income (loss)	(1,176)		7,576		2,580		13,756
Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Revenues	123,112		93,963		346,504		280,634
Costs and expenses:
Costs of revenues	80,796		66,733		228,346		197,937
Selling, general and administrative expenses	22,970		15,902		66,521		51,306
Depreciation and amortization	9,149		7,730		25,037		24,609
Total costs and expenses	112,915		90,365		319,904		273,852
Income from operations	10,197		3,598		26,600		6,782
Interest and other expenses, net	6,346		5,512		18,154		16,859
Income (loss) before income taxes	3,851		(1,914)		8,446		(10,077)
Provision (benefit) for income taxes	1,024		(3,451)		498		(8,329)
Net income (loss) before earnings of consolidated subsidiaries	2,827		1,537		7,948		(1,748)
Net income (loss) of consolidated subsidiaries	588		(3,788)		(1,290)		(6,878)
Net income (loss)	3,415		(2,251)		6,658		(8,626)
Non-Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Revenues	80,966		58,391		227,047		176,571
Costs and expenses:
Costs of revenues	49,801		34,098		138,137		102,396
Selling, general and administrative expenses	20,564		15,718		60,131		47,647
Depreciation and amortization	6,556		8,180		19,868		23,449
Total costs and expenses	76,921		57,996		218,136		173,492
Income from operations	4,045		395		8,911		3,079
Interest and other expenses, net	2,009		1,804		5,873		5,687
Income (loss) before income taxes	2,036		(1,409)		3,038		(2,608)
Provision (benefit) for income taxes	1,448		2,379		4,328		4,270
Net income (loss) before earnings of consolidated subsidiaries	588		(3,788)		(1,290)		(6,878)
Net income (loss)	588		(3,788)		(1,290)		(6,878)
Parent Company [Member]
Costs and expenses:
Net income (loss) of consolidated subsidiaries	588		(3,788)		(1,290)		(6,878)
Net income (loss)	$ 588		$ (3,788)		$ (1,290)		$ (6,878)

[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.