Acquisitions (Details Textual) (USD $)	12 Months Ended			0 Months Ended	12 Months Ended		12 Months Ended		12 Months Ended		0 Months Ended	12 Months Ended	0 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended
	Feb. 28, 2014	Feb. 28, 2013	Feb. 29, 2012	Mar. 29, 2013 Aquilex [Member]	Feb. 28, 2014 Aquilex [Member]	Jun. 02, 2012 Aquilex [Member]	Feb. 28, 2014 G3 Galvananizing Limited [Member]	Jan. 02, 2013 G3 Galvananizing Limited [Member]	Feb. 28, 2014 Nuclear Logistics Incorporated [Member]	Jun. 02, 2012 Nuclear Logistics Incorporated [Member]	Oct. 01, 2012 Galvcast Manufacturing Inc [Member]	Feb. 28, 2014 Galvcast Manufacturing Inc [Member]	Feb. 01, 2012 Galvan Metal Inc [Member]	Feb. 29, 2012 Galvan Metal Inc [Member]	Feb. 29, 2012 Selling, General and Administrative Expenses [Member] Galvan Metal Inc [Member]	Feb. 28, 2014 Customer Related Intangibles [Member] Aquilex [Member]	Feb. 28, 2014 Trade Names [Member] Aquilex [Member]	Feb. 28, 2014 Minimum [Member] Technology [Member] Aquilex [Member]	Feb. 28, 2014 Maximum [Member] Technology [Member] Aquilex [Member]
Business Acquisition [Line Items]
Assets acquired						$ 303,229,000		$ 12,000,000		$ 107,298,000	$ 48,000,000
Liabilities assumed								3,100,000			900,000
Goodwill	278,556,040	171,886,270	121,383,863			109,636,000		4,200,000		32,323,000	15,700,000
Acquisition related costs					5,400,000		500,000		900,000			300,000		500,000	500,000
Goodwill, deductible											75.00%
Purchase price paid				275,700,000						77,000,000			29,100,000
Certain liabilities payoff										3,800,000
Additional payment on performance				3,900,000					10,000,000	20,000,000
Fair value the earn										9,100,000
Purchase price of acquisition				271,800,000									29,100,000
Purchase price of acquisition, net of cash	275,702,030	137,057,680	27,362,834										27,400,000
Cash acquired from acquisition													1,700,000
Intangible assets acquired						$ 87,100,000				$ 50,600,000
Weighted average useful life																14 years	19 years	3 years	9 years