XML 70 R52.htm IDEA: XBRL DOCUMENT v3.5.0.2
Accounts Receivable - Allowance for Returns and Allowances and Discounts (Detail) - Reserve for returns and allowances and discounts [Member] - USD ($)
$ in Thousands
12 Months Ended
May 01, 2016
May 03, 2015
Apr. 27, 2014
Valuation and Qualifying Accounts Disclosure [Line Items]      
beginning balance $ (738) $ (479) $ (543)
provision for returns and allowances and discounts (2,825) (2,733) (2,094)
credits issued 2,601 2,474 2,158
ending balance $ (962) $ (738) $ (479)