Note 4 - Goodwill and Intangible Assets (Details) (USD $)	3 Months Ended			9 Months Ended									9 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Customer Relationships [Member]		Sep. 30, 2013 Noncompete Agreements [Member]		Sep. 30, 2013 Fyfe Asia [Member]	Sep. 30, 2013 Brinderson LP [Member]	Jul. 31, 2013 Brinderson LP [Member]	Sep. 30, 2013 Brinderson LP [Member] Customer Relationships [Member]	Sep. 30, 2013 Brinderson LP [Member] Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment of Intangible Assets (Excluding Goodwill)		$ 2,500,000
Finite-Lived Customer Relationships, Gross												59,800,000
Finite-Lived Intangible Asset, Useful Life						14 years	[1],[2]	5 years	[1],[2]				15 years	5 years
Finite-Lived Noncompete Agreements, Gross												400,000
Goodwill, Written off Related to Sale of Business Unit		1,400,000
Goodwill, Purchase Accounting Adjustments										206,000
Amortization of Intangible Assets	3,600,000		2,600,000	8,800,000	8,100,000
Goodwill, Acquired During Period				$ 62,900,000						$ 200,000	$ 62,700,000

[1] During the third quarter of 2013, the Company recorded $59.8 million in customer relationships to be amortized over a weighted average life of 15 years and $0.4 million in non-compete agreements to be amortized over a weighted average life of 5 years related to the acquisition of Brinderson, as discussion in Note 1 of this report.

[2] During the second quarter of 2013, the Company approved a plan of liquidation with respect to BWW 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 retrospectively adjusted. For further information, see Note 9 contained within this report.