Share-Based Plans - Board of Directors (Details)	12 Months Ended
	Jan. 28, 2017 $ / Nonemployee_Director shares
Nonemployee Board of Directors [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Deferred Compensation Arrangement with Individual, Fair Value of Shares Issued to Each Individual | $ / Nonemployee_Director	110,000
Director Stock Option Plan [Member] | Nonemployee Board of Directors [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Annual Shares Issued | shares	10,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Shares Vested on First Anniversary	20.00%
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Shares Vested on Second Anniversary	60.00%
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Shares Vested on Third Anniversary	100.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Term Following Termination of Employment, Death, or Disability	1 year
Share Based Compensation Arrangement By Share Based Payment Award, Award Expiration Period From Grant Date	10 years 1 month
Stock Options [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period	4 years