Deferred Tax Assets and Liabilities Components - (Details) - USD ($) $ in Thousands	Jan. 28, 2017	Jan. 30, 2016
ComponentsOfDeferredTaxAssetsAndLiabilitiesAbstract
Allowance For Doubtful Accounts	$ 435	$ 502
Deferred Lease Liablity	0	1,176
Inventory Valuation Deferred Tax Asset	2,841	3,063
Non-Deductible Accrued Liablities	5,298	3,081
Other Taxes	1,653	1,564
Federal Benefit Of Uncertain Tax Positions	3,812	4,044
DeferredTaxAssetsTaxDeferredIncentive CompensationExpense	0	0
Equity Compensation Expense	6,077	4,888
Charitable Contribution Carryover	3,425	684
Other Deferred Tax Assets	2,525	2,048
Total Deferred Tax Assets	(26,066)	(21,050)
Property And Equipment	(9,564)	(8,095)
Unrealized Gains On Short-Term Ivestments In Comprehensive Income	0	(481)
Health Care Expenses	(406)	(818)
Inventory Valuation	0	0
Deferred lease liability	267	0
IBNR	1,500	1,376
Other Deferred Tax Liabilities	556	0
Total Deferred Tax Liabilities	12,293	10,770
Net Deferred Tax Liabilites	$ (13,773)	$ (10,280)