Note 4 - Goodwill and Intangible Assets (Details) - Intangible Assets (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013		Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 210,835	[1]	$ 211,721	[1]
Accumulated Amortization	(56,308)	[1]	(52,091)	[1]
Net Carrying Amount	154,527	[1]	159,629	[1]
Licensing Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Lives	7 years	[1]
Gross Carrying Amount	3,918	[1]	3,925	[1]
Accumulated Amortization	(2,900)	[1]	(2,821)	[1]
Net Carrying Amount	1,018	[1]	1,104	[1]
Order or Production Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,746	[1]	4,756	[1]
Accumulated Amortization	(4,746)	[1]	(4,756)	[1]
Net Carrying Amount		[1]		[1]
Lease Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Lives	13 years	[1]
Gross Carrying Amount	2,070	[1]	2,067	[1]
Accumulated Amortization	(400)	[1]	(331)	[1]
Net Carrying Amount	1,670	[1]	1,736	[1]
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Lives	17 years	[1]
Gross Carrying Amount	21,349	[1]	21,290	[1]
Accumulated Amortization	(3,832)	[1]	(3,317)	[1]
Net Carrying Amount	17,517	[1]	17,972	[1]
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	710	[1]	710	[1]
Accumulated Amortization	(710)	[1]	(710)	[1]
Net Carrying Amount		[1]		[1]
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Lives	14 years	[1]
Gross Carrying Amount	122,878	[1]	123,301	[1]
Accumulated Amortization	(22,420)	[1]	(18,912)	[1]
Net Carrying Amount	100,458	[1]	104,389	[1]
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Lives	18 years	[1]
Gross Carrying Amount	55,164	[1]	55,672	[1]
Accumulated Amortization	(21,300)	[1]	(21,244)	[1]
Net Carrying Amount	$ 33,864	[1]	$ 34,428	[1]

[1] During the second quarter of 2013, the Company approved a plan of liquidation of and, in connection therewith, recorded a write-down of the $2.5 million of intangible assets associated with BWW, which operation now is reported as discontinued. Consequently, the intangible assets and accumulated amortization associated with BWW are no longer included in this table. Additionally, all prior year balances have been restated. For further information, see Note 9 contained within this report.