Note 5 - Goodwill and Intangible Assets (Details) - Intangible Assets (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Amortizable intangible assets:
Gross carrying value	$ 265,489	$ 275,965
Accumulated Amortization	(149,280)	(123,069)
Net carrying value	116,209	152,896
Customer Relationships [Member]
Amortizable intangible assets:
Gross carrying value	196,666	204,699
Accumulated Amortization	(110,045)	(90,040)
Net carrying value	86,621	114,659
Trade Names [Member]
Amortizable intangible assets:
Gross carrying value	58,446	60,620
Accumulated Amortization	(29,788)	(24,413)
Net carrying value	28,658	36,207
Noncompete Agreements [Member]
Amortizable intangible assets:
Estimated useful lives	36 months	36 months
Gross carrying value	3,050	3,116
Accumulated Amortization	(2,566)	(2,313)
Net carrying value	484	803
Unpatented Technology [Member]
Amortizable intangible assets:
Gross carrying value	7,327	7,530
Accumulated Amortization	(6,881)	(6,303)
Net carrying value	$ 446	$ 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