Note 14 - Condensed Consolidating Financial Information of Guarantor Subsidiaries (Detail) - Condensed Consolidating Statement of Operations and Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenues	$ 521,237	$ 397,860	$ 163,511
Costs and expenses:
Costs of revenues	344,051	262,242	103,606
Selling, general and administrative expenses	113,510	84,133	37,689
Depreciation and amortization	58,551	47,439	19,505
Total costs and expenses	516,112	393,814	160,800
Income (loss) from operations	5,125	4,046	2,711
Interest and other expenses, net	28,051	16,461	11,233
Income (loss) before income taxes	(22,926)	(12,415)	(8,522)
Provision (benefit) for income taxes	(7,987)	(4,082)	(2,484)
Net loss	(14,939)	(8,333)	(6,038)
Comprehensive Income (Loss):
Foreign currency translation adjustments, net of tax	4,612	(2,645)	1,216
Total comprehensive income (loss)	(10,327)	(10,978)	(4,822)
Guarantor Subsidiaries [Member]
Revenues	340,200	298,056	147,917
Costs and expenses:
Costs of revenues	241,281	203,651	94,238
Selling, general and administrative expenses	60,255	55,139	34,789
Depreciation and amortization	34,339	34,081	17,044
Total costs and expenses	335,875	292,871	146,071
Income (loss) from operations	4,325	5,185	1,846
Interest and other expenses, net	24,411	14,148	10,034
Income (loss) before income taxes	(20,086)	(8,963)	(8,188)
Provision (benefit) for income taxes	(10,320)	(5,331)	(2,538)
Net loss	(9,766)	(3,632)	(5,650)
Comprehensive Income (Loss):
Foreign currency translation adjustments, net of tax	(249)
Total comprehensive income (loss)	(10,015)	(3,632)	(5,650)
Non-Guarantor Subsidiaries [Member]
Revenues	181,037	99,804	15,594
Costs and expenses:
Costs of revenues	102,770	58,591	9,368
Selling, general and administrative expenses	53,255	28,994	2,900
Depreciation and amortization	24,212	13,358	2,461
Total costs and expenses	180,237	100,943	14,729
Income (loss) from operations	800	(1,139)	865
Interest and other expenses, net	3,640	2,313	1,199
Income (loss) before income taxes	(2,840)	(3,452)	(334)
Provision (benefit) for income taxes	2,333	1,249	54
Net loss	(5,173)	(4,701)	(388)
Comprehensive Income (Loss):
Foreign currency translation adjustments, net of tax	4,861	(2,645)	1,216
Total comprehensive income (loss)	$ (312)	$ (7,346)	$ 828