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Subsequent Event	3 Months Ended
Subsequent Event	Apr. 30, 2018
Subsequent Events [Abstract]
Subsequent event	Subsequent event On June 5, 2018, the Company completed an eighth amendment to the Credit Agreement. The Lenders extended the minimum availability requirements for the Company’s Canadian subsidiary, through August 1, 2018. Furthermore, the lenders waived the technical reporting event of default which resulted from the Company applying a non-conforming method in calculating the Canadian availability as of April 30, 2018.