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11. Employee Benefit Plans (Details) - USD ($)
 3 Months Ended
May. 01, 2016
Jan. 31, 2016
11. Employee Benefit Plans (Details) [Line Items]    
Pension and Other Postretirement and Postemployment Benefit Plans, Liabilities, Current $ 16,800,000 $ 8,200,000
Deferred Compensation Liability, Classified, Noncurrent 10,619,000 $ 8,409,000
Defined Benefit Plan, Expected Future Benefit Payments, Remainder of Fiscal Year $ 450,000  
Pension Plan [Member]    
11. Employee Benefit Plans (Details) [Line Items]    
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate 7.00%  
Defined Benefit Plan, Contributions by Employer $ 146,000  
Defined Benefit Plan, Expected Contributions in Current Fiscal Year $ 450,000