Note 5 - Goodwill and Intangible Assets (Detail) - Intangible Assets (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Amortizable intangible assets:
Gross carrying value	275,965	215,406
Accumulated Amortization	(123,069)	(69,238)
Net carrying value	152,896	146,168
Minimum [Member] | Customer Relationships [Member]
Amortizable intangible assets:
Estimated useful lives	40 years	40 years
Minimum [Member] | Trade Names [Member]
Amortizable intangible assets:
Estimated useful lives	45 years	45 years
Minimum [Member] | Unpatented Technology [Member]
Amortizable intangible assets:
Estimated useful lives	24 years	24 years
Maximum [Member] | Customer Relationships [Member]
Amortizable intangible assets:
Estimated useful lives	60 years	60 years
Maximum [Member] | Trade Names [Member]
Amortizable intangible assets:
Estimated useful lives	84 years	84 years
Maximum [Member] | Unpatented Technology [Member]
Amortizable intangible assets:
Estimated useful lives	40 years	40 years
Customer Relationships [Member]
Amortizable intangible assets:
Gross carrying value	204,699	157,826
Accumulated Amortization	(90,040)	(50,438)
Net carrying value	114,659	107,388
Trade Names [Member]
Amortizable intangible assets:
Gross carrying value	60,620	48,046
Accumulated Amortization	(24,413)	(13,277)
Net carrying value	36,207	34,769
Noncompete Agreements [Member]
Amortizable intangible assets:
Estimated useful lives	36 years	36 years
Gross carrying value	3,116	2,784
Accumulated Amortization	(2,313)	(1,587)
Net carrying value	803	1,197
Unpatented Technology [Member]
Amortizable intangible assets:
Gross carrying value	7,530	6,750
Accumulated Amortization	(6,303)	(3,936)
Net carrying value	1,227	2,814