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Subsequent Event	9 Months Ended
Subsequent Event	Oct. 31, 2017
Subsequent Event [Line Items]
Subsequent Events [Text Block]	Subsequent events. In December, 2017, the Company completed a seventh amendment to the Credit Agreement. Lenders increased the borrowing limit for the Company’s Canadian subsidiary and adjusted minimum availability requirements for borrowers in the U.S. and Canada with a limited waiver retroactive to October 31, 2017.