Note 4 - Goodwill, Other Intangibles and Impairments of Long-Lived Assets (Detail) - Other Intangible Assets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Gross Carrying Amount	$ 50,288	$ 28,885
Accumulated Amortization	(14,062)	(12,798)
Intangible assets, net	36,226	16,087
Gross Carrying Amount	4,792	4,763
Intangible assets, net	4,792	4,763
Total intangible assets	55,080	33,648
Total intangible assets	(14,062)	(12,798)
Total intangible assets	41,018	20,850
Permits and Licenses [Member]
Gross Carrying Amount	3,941	3,929
Intangible assets, net	3,941	3,929
Trademarks [Member]
Gross Carrying Amount	851	834
Intangible assets, net	851	834
Technology Related [Member]
Gross Carrying Amount	5,421	5,531
Accumulated Amortization	(2,910)	(2,607)
Intangible assets, net	2,511	2,924
Customer Related [Member]
Gross Carrying Amount	42,540	20,675
Accumulated Amortization	(10,559)	(7,854)
Intangible assets, net	31,981	12,821
Employment Related [Member]
Gross Carrying Amount	2,327	2,679
Accumulated Amortization	(593)	(2,337)
Intangible assets, net	$ 1,734	$ 342