Reportable Segment Information - (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2015	Nov. 01, 2014	Oct. 31, 2015	Nov. 01, 2014	Jan. 31, 2015
Segment Reporting Information [Line Items]
Total revenues	$ 225,467	$ 216,010	$ 760,635	$ 746,801
Depreciation	6,040	5,422	16,968	16,297
Interest and other income	857	686	2,259	2,527
Total Assets	618,377	582,489	618,377	582,489	$ 608,278
Capital expenditures	11,030	7,414	22,432	21,380
Income Before Taxes	9,362	7,156	82,306	80,093
ReportableSegmentsMemberRetail [Member]
Segment Reporting Information [Line Items]
Total revenues	224,179	214,569	756,591	742,448
Depreciation	6,028	5,412	16,931	16,262
Interest and other income	857	686	2,259	2,527
Total Assets	561,709	514,727	561,709	514,727
Capital expenditures	11,030	7,414	22,432	21,380
Income Before Taxes	8,917	6,630	80,914	78,509
ReportableSegmentsMemberCredit [Member]
Segment Reporting Information [Line Items]
Total revenues	1,288	1,441	4,044	4,353
Depreciation	12	10	37	35
Interest and other income	0	0	0	0
Total Assets	56,668	67,762	56,668	67,762
Capital expenditures	0	0	0	0
Income Before Taxes	$ 445	$ 526	$ 1,392	$ 1,584