Debt (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jul. 31, 2013
Line of Credit Facility [Line Items]
Document Period End Date	Jul. 31, 2013
Debt	$ 41.9
Debt, net change	(0.2)
Maturity date	Nov. 30, 2016
Line of Credit Facility, Maximum Borrowing Capacity	25
Line of Credit Facility, Dividend Restrictions	do not permit payment of dividends
Line of Credit Facility, Covenant Compliance	in compliance with all covenants under the Loan Agreement
Line of Credit Facility, Interest Rate Description	(a) a margin of 0.50 in effect plus prime rate; or (b) a margin of 2.75 in effect plus the LIBOR rate for the corresponding interest period.
Letters of Credit Outstanding, Amount	0.3
Restricted Cash and Cash Equivalents, Current	0.2
UNITED STATES
Line of Credit Facility [Line Items]
Revolving line, amount outstanding	11
Revolving line, remaining borrowing capacity	5
Foreign Line of Credit [Member]
Line of Credit Facility [Line Items]
Revolving line, amount outstanding	18
Revolving line, remaining borrowing capacity	$ 11