Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Nov. 01, 2014
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 6.3
Unrecognized tax benefits increased as a result of acquisition	1.7
Accrued interest related to unrecognized tax benefits	1.1
Unrecognized tax benefits accrued interest increased as a result of acquisition	0.8
Accrued penalties related to unrecognized tax benefits	$ 0.6
US
Income Tax Disclosure [Abstract]
Tax years subject to examination	Tax years ending after November 1, 2008
CANADA
Income Tax Disclosure [Abstract]
Tax years subject to examination	Tax years ending after November 1, 2008
UK
Income Tax Disclosure [Abstract]
Tax years subject to examination	Tax years ending after January 31, 2012