Note 4 - Goodwill and Intangible Assets (Details) - Intangible Assets (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 275,243	$ 273,385
Accumulated Amortization	(71,485)	(64,102)
Net Carrying Amount	203,758	209,283
Licensing Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Lives	6 years
Gross Carrying Amount	3,917	3,917
Accumulated Amortization	(3,058)	(2,977)
Net Carrying Amount	859	940
Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Lives	0 years
Gross Carrying Amount	4,744	4,745
Accumulated Amortization	(4,744)	(4,745)
Net Carrying Amount	0	0
Leases [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Lives	13 years
Gross Carrying Amount	2,067	2,067
Accumulated Amortization	(551)	(477)
Net Carrying Amount	1,516	1,590
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Lives	16 years
Gross Carrying Amount	21,521	21,394
Accumulated Amortization	(4,682)	(4,167)
Net Carrying Amount	16,839	17,227
Non-competes [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Lives	4 years
Gross Carrying Amount	1,140	1,140
Accumulated Amortization	(796)	(753)
Net Carrying Amount	344	387
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Lives	14 years
Gross Carrying Amount	182,832	182,703
Accumulated Amortization	(33,729)	(28,287)
Net Carrying Amount	149,103	154,416
Patents and acquired technology [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Lives	17 years
Gross Carrying Amount	59,022	57,419
Accumulated Amortization	(23,925)	(22,696)
Net Carrying Amount	$ 35,097	$ 34,723