Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended			12 Months Ended
	Feb. 29, 2012	Feb. 28, 2013	Feb. 28, 2011	Feb. 28, 2013 Minimum	Feb. 28, 2013 Maximum	Feb. 29, 2012 U.S. and German	Feb. 28, 2013 State and Local Jurisdiction
Income Tax [Line Items]
Deferred tax asset valuation allowance reduced	$ (4)
Reversed valuation allowance						14.8
Deferred tax asset valuation allowance for net operating losses							0.6
Deferred tax assets net operating loss and tax credit with unlimited expiration date		3.8
Deferred tax assets net operating loss and tax credit subject to expiration date		1.2
Deferred tax assets net operating loss and tax credit expiration date				2018	2032
Undistributed earnings from MSC's China subsidiary	0.6	0.6
Amounts accrued for tax liabilities		0.5
Unrecognized tax benefits that would impact effective tax rate If recognized	0.9	0.2	1.4
Unrecognized tax benefits		0.5
Estimated change in tax rate lower bound		0.2
Accrued interest related to tax uncertainties recognized	$ 0.3	$ 0.2