Note 5 - Goodwill and Intangible Assets (Details) - Intangible Assets (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Amortizable intangible assets:
Gross carrying value	$ 270,506	$ 275,965
Accumulated Amortization	(166,000)	(123,069)
Net carrying value	104,506	152,896
Customer Relationships [Member]
Amortizable intangible assets:
Gross carrying value	199,889	204,699
Accumulated Amortization	(122,907)	(90,040)
Net carrying value	76,982	114,659
Trade Names [Member]
Amortizable intangible assets:
Gross carrying value	59,395	60,620
Accumulated Amortization	(33,211)	(24,413)
Net carrying value	26,184	36,207
Noncompete Agreements [Member]
Amortizable intangible assets:
Estimated useful lives	36 months	36 months
Gross carrying value	3,744	3,116
Accumulated Amortization	(2,734)	(2,313)
Net carrying value	1,010	803
Unpatented Technology [Member]
Amortizable intangible assets:
Gross carrying value	7,478	7,530
Accumulated Amortization	(7,148)	(6,303)
Net carrying value	$ 330	$ 1,227
Minimum [Member] | Customer Relationships [Member]
Amortizable intangible assets:
Estimated useful lives	40 months	40 months
Minimum [Member] | Trade Names [Member]
Amortizable intangible assets:
Estimated useful lives	45 months	45 months
Minimum [Member] | Unpatented Technology [Member]
Amortizable intangible assets:
Estimated useful lives	24 months	24 months
Maximum [Member] | Customer Relationships [Member]
Amortizable intangible assets:
Estimated useful lives	60 months	60 months
Maximum [Member] | Trade Names [Member]
Amortizable intangible assets:
Estimated useful lives	84 months	84 months
Maximum [Member] | Unpatented Technology [Member]
Amortizable intangible assets:
Estimated useful lives	40 months	40 months