Basis of Presentation - Additional Information (Detail) (USD $)	12 Months Ended	3 Months Ended
	Feb. 28, 2014	May 30, 2014 Adjustments For Error Correction [Member]	May 30, 2014 Schurman [Member]	Nov. 29, 2013 Schurman [Member]	May 30, 2014 Schurman [Member] Liquidity Guaranty [Member]	May 30, 2014 Schurman [Member] Business Trade and Other Receivables [Member]	May 30, 2014 Schurman [Member] Operating Leases Subleased to Schurman [Member]	Feb. 28, 2014 Schurman [Member] Operating Leases Subleased to Schurman [Member]	May 31, 2013 Schurman [Member] Operating Leases Subleased to Schurman [Member]
Significant Accounting Policies [Line Items]
Equity interest holdings in Schurman Fine Papers	15.00%
Investment impairment charge				$ 1,900,000
Carrying amount of the investment	0		0
Forfeiture of equity interest in subsidiary percentage	15.00%
Number of days after Schurman's lenders commence liquidation of collateral under Senior Credit Facility					91 days
End period of liquidity guaranty			2016-07
Maximum exposure to loss, amount					10,000,000	28,400,000	6,500,000	7,100,000	10,600,000
Increase in net income due to decrease in tax expense		$ 4,100,000