Note 14 - Condensed Consolidating Financial Information of Guarantor Subsidiaries (Details) - Condensed Consolidating Statement of Operations and Comprehensive Income (Loss) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Condensed Income Statements, Captions [Line Items]
Revenues		$ 208,738	$ 196,445	$ 405,054	$ 369,473
Costs and expenses:
Costs of revenues		136,425	124,851	264,601	235,886
Selling, general and administrative expenses		42,721	42,590	84,873	83,118
Depreciation and amortization	[1]	13,729	14,858	28,577	29,200
Total costs and expenses		192,875	182,299	378,051	348,204
Income from operations		15,863	14,146	27,003	21,269
Interest and other expenses, net		28,567	8,095	36,571	15,672
Income (loss) before income taxes		(12,704)	6,051	(9,568)	5,597
Provision (benefit) for income taxes		(4,841)	2,519	(3,729)	2,354
Net income (loss) before earnings of consolidated subsidiaries		(7,863)	3,532	(5,839)	3,243
Net income (loss)		(7,863)	3,532	(5,839)	3,243
Consolidation, Eliminations [Member]
Costs and expenses:
Net income (loss) of consolidated subsidiaries		(2,820)	164	(4,580)	3,756
Net income (loss)		(2,820)	164	(4,580)	3,756
Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Revenues		132,125	117,343	253,843	223,392
Costs and expenses:
Costs of revenues		88,622	76,483	170,956	147,550
Selling, general and administrative expenses		23,689	21,846	46,703	43,551
Depreciation and amortization		9,071	8,168	18,482	15,888
Total costs and expenses		121,382	106,497	236,141	206,989
Income from operations		10,743	10,846	17,702	16,403
Interest and other expenses, net		27,013	6,116	33,422	11,808
Income (loss) before income taxes		(16,270)	4,730	(15,720)	4,595
Provision (benefit) for income taxes		(6,997)	1,116	(7,591)	(526)
Net income (loss) before earnings of consolidated subsidiaries		(9,273)	3,614	(8,129)	5,121
Net income (loss) of consolidated subsidiaries		1,410	(82)	2,290	(1,878)
Net income (loss)		(7,863)	3,532	(5,839)	3,243
Non-Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Revenues		76,613	79,102	151,211	146,081
Costs and expenses:
Costs of revenues		47,803	48,368	93,645	88,336
Selling, general and administrative expenses		19,032	20,744	38,170	39,567
Depreciation and amortization		4,658	6,690	10,095	13,312
Total costs and expenses		71,493	75,802	141,910	141,215
Income from operations		5,120	3,300	9,301	4,866
Interest and other expenses, net		1,554	1,979	3,149	3,864
Income (loss) before income taxes		3,566	1,321	6,152	1,002
Provision (benefit) for income taxes		2,156	1,403	3,862	2,880
Net income (loss) before earnings of consolidated subsidiaries		1,410	(82)	2,290	(1,878)
Net income (loss)		1,410	(82)	2,290	(1,878)
Parent Company [Member]
Costs and expenses:
Net income (loss) of consolidated subsidiaries		1,410	(82)	2,290	(1,878)
Net income (loss)		$ 1,410	$ (82)	$ 2,290	$ (1,878)

[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.