XML 38 R40.htm IDEA: XBRL DOCUMENT v3.2.0.727
Intangible Assets - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
Aug. 01, 2015
Aug. 02, 2014
Aug. 01, 2015
Aug. 02, 2014
Impairment of Intangible Assets (Excluding Goodwill) [Abstract]        
Impairments of intangible assets     $ 0 $ 0
Amortization expense $ 105,000 $ 175,000 $ 194,000 $ 351,000