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Stock Based Compensation (Narrative) (Details) - USD ($)
3 Months Ended 6 Months Ended
Aug. 03, 2019
Aug. 04, 2018
Apr. 28, 2015
Aug. 03, 2019
Aug. 04, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares available to be issued and sold pursuant to the 2017 Plan 1,000,000     1,000,000  
Stock-based compensation expense for ESPP $ 7,000 $ 7,000   $ 18,000 $ 19,000
Income tax benefit - ESPP 2,000 $ 2,000   $ 3,000 $ 4,000
Restricted stock awards granted weighted average grant date fair value       $ 26.58 $ 32.74
Fair value of stock awards vested during period       $ 16,900,000 $ 887,000
Unrecognized compensation cost, recognition period       8 months 12 days  
Unrecognized compensation expense related to SARs 80,000     $ 80,000  
Restricted Stock [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized share-based compensation expense 594,000     $ 594,000  
Unrecognized compensation cost, recognition period       7 months 6 days  
Weighted average grant date fair value of awards       $ 26.58  
Restricted Stock Unit [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized share-based compensation expense $ 5,500,000     $ 5,500,000  
Unrecognized compensation cost, recognition period       1 year 2 months 12 days  
Stock Appreciation Rights (SARs) [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock appreciation rights expiration date       Mar. 31, 2022  
Defined maximum gain     $ 10.00 $ 10.00  
Exercise price     $ 24.26 34.95  
Weighted average grant date fair value of awards       $ 2.59