Note 9 - Discontinued Operations (Details) (USD $)	6 Months Ended		3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Scenario, Forecast [Member] Bayou Welding Works [Member]	Jun. 30, 2013 Miscellaneous Costs [Member] Bayou Welding Works [Member]	Jun. 30, 2013 Bayou Welding Works [Member] Goodwill and Intagible Assets [Member]	Jun. 30, 2013 Bayou Welding Works [Member] Tangible Assets [Member]	Jun. 30, 2013 Bayou Welding Works [Member]
Note 9 - Discontinued Operations (Details) [Line Items]
Goodwill and Intangible Asset Impairment							$ 3,900,000
Goodwill and Intangible Asset Impairment, Net of Tax							2,400,000
Impairment Effect on Earnings Per Share, after Tax (in Dollars per share)					$ 0.06	$ 0.02
Tangible Asset Impairment Charges							1,100,000
Tangible Asset Impairment Charges, Net of Tax							700,000
Proceeds from Sale of Property, Plant, and Equipment	1,637,000	2,849,000	9,900,000
Business Exit Costs			100,000	100,000
Business Exit Costs Effect on Earnings Per Share, after Tax			$ 0.01	$ 0.01