Organization and Basis of Presentation (Recent Accounting Pronouncements) (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 29, 2018	Jan. 28, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Document Fiscal Year Focus	2019
Retained earnings	$ 524,238	$ 502,346
Prepaid taxes	12,874	$ 11,809
Accounting Standards Update 2014-09 | Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings	11,100
Accounting Standards Update 2016-16 | Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings	1,800
Deferred tax assets	3,700
Prepaid taxes	$ 5,500