Fair Value Measurements - Underlying Asset Value (Details) - USD ($) $ in Thousands	Apr. 29, 2017	Jan. 28, 2017	Apr. 30, 2016
Investment [Line Items]
Underlying assets in non-qualified deferred compensation program	$ 111,704	$ 100,423	$ 96,804
Level 1 [Member]
Investment [Line Items]
Underlying assets in non-qualified deferred compensation program	95,359	84,933	81,285
Level 2 [Member]
Investment [Line Items]
Underlying assets in non-qualified deferred compensation program	$ 16,345	$ 15,490	$ 15,519