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Information Concerning Supplemental Disclosures of Cash Flow Activities (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2012	Jan. 31, 2011	Jan. 31, 2010
Cash paid for:
Interest	$ 14,686	$ 13,701	$ 14,135
Income taxes	$ 8,707	$ 10,627	$ 11,270

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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- Definition

The amount of cash paid for interest during the period net of cash paid for interest that is capitalized.

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