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Line of Credit Facility	3 Months Ended
	Apr. 30, 2011
Line of Credit Facility
Line of Credit Facility	6. Line of Credit Facility On April 25, 2011, the Company amended its line of credit facility (the "Line") with Wells Fargo Bank, National Association (successor by merger to Wachovia Bank, National Association). This amendment extended the term of the Line for three years, increased the accordion feature from $100 million to $175 million, reduced the interest rate margin for certain cash advances and modified certain financial covenants and terms. The Line contains a sub-limit for borrowings by the Company's European subsidiaries that are guaranteed by the Company. Cash advances bear interest at LIBOR plus 0.50% to 1.50% based on the Company's achievement of prescribed adjusted debt ratios. The Line subjects the Company to various restrictive covenants, including maintenance of certain financial ratios such as adjusted debt. The covenants also include limitations on the Company's capital expenditures, ability to repurchase shares and the payment of cash dividends. As of and during the three months ended April 30, 2011, there were no borrowings under the Line and the Company was in compliance with all covenants under the Line. Outstanding letters of credit and stand-by letters of credit under the Line totaled approximately $62,365 as of April 30, 2011. The available credit, including the accordion feature, under the Line was $112,635 as of April 30, 2011.

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- Definition

This element may be used to capture the complete disclosure pertaining to short-term or long-term contractual arrangements with lenders, including letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph f
-Article 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 22
-Article 5

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