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	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Revenues	$ 127,777	$ 106,742	$ 251,515	$ 173,330
Costs and expenses:
Costs of revenues	84,223	70,508	165,396	114,077
Selling, general and administrative expenses	27,729	21,654	56,361	35,982
Depreciation and amortization	13,762	11,475	27,787	20,084
Total costs and expenses	125,714	103,637	249,544	170,143
Income (loss) from operations	2,063	3,105	1,971	3,187
Interest and other expenses, net	6,174	3,214	12,747	4,226
Income (loss) before income taxes	(4,111)	(109)	(10,776)	(1,039)
Provision (benefit) for income taxes	(804)	(37)	(3,146)	(408)
Net income (loss)	(3,307)	(72)	(7,630)	(631)
Comprehensive Income (Loss):
Foreign currency translation adjustments, net of tax	(1,736)	(1,074)	714	(230)
Total comprehensive income (loss)	(5,043)	(1,146)	(6,916)	(861)
Guarantor Subsidiaries [Member]
Revenues	88,462	82,685	175,657	139,543
Costs and expenses:
Costs of revenues	62,307	56,202	122,722	94,064
Selling, general and administrative expenses	15,424	14,801	32,446	26,895
Depreciation and amortization	8,682	8,565	17,401	15,721
Total costs and expenses	86,413	79,568	172,569	136,680
Income (loss) from operations	2,049	3,117	3,088	2,863
Interest and other expenses, net	5,142	2,104	10,454	2,534
Income (loss) before income taxes	(3,093)	1,013	(7,366)	329
Provision (benefit) for income taxes	(761)	226	(3,246)	(92)
Net income (loss)	(2,332)	787	(4,120)	421
Comprehensive Income (Loss):
Total comprehensive income (loss)	(2,332)	787	(4,120)	421
Non-Guarantor Subsidiaries [Member]
Revenues	39,315	24,057	75,858	33,787
Costs and expenses:
Costs of revenues	21,916	14,306	42,674	20,013
Selling, general and administrative expenses	12,305	6,853	23,915	9,087
Depreciation and amortization	5,080	2,910	10,386	4,363
Total costs and expenses	39,301	24,069	76,975	33,463
Income (loss) from operations	14	(12)	(1,117)	324
Interest and other expenses, net	1,032	1,110	2,293	1,692
Income (loss) before income taxes	(1,018)	(1,122)	(3,410)	(1,368)
Provision (benefit) for income taxes	(43)	(263)	100	(316)
Net income (loss)	(975)	(859)	(3,510)	(1,052)
Comprehensive Income (Loss):
Foreign currency translation adjustments, net of tax	(1,736)	(1,074)	714	(230)
Total comprehensive income (loss)	(2,711)	(1,933)	(2,796)	(1,282)
Parent Company [Member]
Revenues	0	0	0	0
Costs and expenses:
Costs of revenues	0	0	0	0
Selling, general and administrative expenses	0	0	0	0
Depreciation and amortization	0	0	0	0
Total costs and expenses	0	0	0	0
Income (loss) from operations	0	0	0	0
Interest and other expenses, net	0	0	0	0
Income (loss) before income taxes	0	0	0	0
Provision (benefit) for income taxes	0	0	0	0
Net income (loss)	0	0	0	0
Comprehensive Income (Loss):
Foreign currency translation adjustments, net of tax	0	0	0	0
Total comprehensive income (loss)	$ 0	$ 0	$ 0	$ 0