Basis of Presentation: (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Oct. 29, 2016	Oct. 29, 2016
Selling, General and Administrative Expenses
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Prior period reclassification adjustment	$ 0.2	$ 1.8
Cost of Goods Sold
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Prior period reclassification adjustment	$ (0.2)	$ (1.8)