XML 68 R53.htm IDEA: XBRL DOCUMENT v3.3.1.900
Leases (Narrative) (Details) - USD ($)
1 Months Ended 12 Months Ended
Oct. 31, 2013
Jan. 31, 2016
Feb. 01, 2015
Feb. 02, 2014
Rent expense under non-cancellable operating leases   $ 1,700,000 $ 1,200,000 $ 1,200,000
Minimum [Member]        
Lease terms   5 years    
Maximum [Member]        
Lease terms   10 years    
Port Washington, Wisconsin [Member]        
Lease expiration date   Dec. 31, 2023    
Operating leases renewal term   5 years    
Operating lease base monthly rental payments $ 10,600 $ 11,000    
Annual percentage increase on monthly operating lease   2.00%    
Rent expense under non-cancellable operating leases   $ 100,000 $ 100,000 $ 90,000