Note 14 - Condensed Consolidating Financial Information of Guarantor Subsidiaries (Detail) - Condensed Consolidating Statement of Operations and Comprehensive Income (Loss) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues	$ 148,703,000	$ 123,738,000
Costs of revenues	97,384,000	81,173,000
Selling, general and administrative expenses	33,257,000	28,632,000
Depreciation and amortization	16,326,000	14,025,000
Total costs and expenses	146,967,000	123,830,000
Income (loss) from operations	1,736,000	(92,000)
Interest and other expenses, net	7,530,000	6,573,000
Income (loss) before income taxes	(5,794,000)	(6,665,000)
Provision (benefit) for income taxes	(2,202,000)	(2,342,000)
Net loss	(3,592,000)	(4,323,000)
Foreign currency translation adjustments, net of tax	(4,251,000)	2,450,000
Total comprehensive income (loss)	(7,843,000)	(1,873,000)
Guarantor Subsidiaries [Member]
Revenues	91,178,000	87,195,000
Costs of revenues	64,131,000	60,415,000
Selling, general and administrative expenses	18,124,000	17,022,000
Depreciation and amortization	8,623,000	8,719,000
Total costs and expenses	90,878,000	86,156,000
Income (loss) from operations	300,000	1,039,000
Interest and other expenses, net	5,559,000	5,312,000
Income (loss) before income taxes	(5,259,000)	(4,273,000)
Provision (benefit) for income taxes	(3,058,000)	(2,485,000)
Net loss	(2,201,000)	(1,788,000)
Foreign currency translation adjustments, net of tax	(75,000)
Total comprehensive income (loss)	(2,276,000)	(1,788,000)
Non-Guarantor Subsidiaries [Member]
Revenues	57,525,000	36,543,000
Costs of revenues	33,253,000	20,758,000
Selling, general and administrative expenses	15,133,000	11,610,000
Depreciation and amortization	7,703,000	5,306,000
Total costs and expenses	56,089,000	37,674,000
Income (loss) from operations	1,436,000	(1,131,000)
Interest and other expenses, net	1,971,000	1,261,000
Income (loss) before income taxes	(535,000)	(2,392,000)
Provision (benefit) for income taxes	856,000	143,000
Net loss	(1,391,000)	(2,535,000)
Foreign currency translation adjustments, net of tax	(4,176,000)	2,450,000
Total comprehensive income (loss)	$ (5,567,000)	$ (85,000)