Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012 segments	Oct. 01, 2011	Dec. 31, 2011
Segment Reporting Information [Line Items]
Assets	$ 380,335	$ 356,832	$ 380,335	$ 356,832	$ 335,657
Number of reportable segments			3
Net revenues	191,924	180,269	556,964	530,049
Contribution	34,247	30,565	93,002	86,562
Indirect cost of goods sold not included in consolidated contribution	(7,577)	(7,781)	(20,508)	(20,248)
General and administrative expense	(9,499)	(9,894)	(27,443)	(25,291)
Interest expense	(217)	(226)	(661)	(666)
Income Tax Expense (Benefit)	(6,682)	(1,448)	(17,749)	3,257
Net Income	10,272	11,216	26,641	43,614
Total capital expenditures	4,025	3,032	12,831	13,665
Depreciation and amortization	3,840	3,860	11,513	10,886
Stores [Member]
Segment Reporting Information [Line Items]
Assets	31,167	36,631	31,167	36,631
Net revenues	174,990	163,839	505,965	478,839
Contribution	33,162	29,415	89,575	82,949
Total capital expenditures	3,496	2,526	11,204	10,687
Depreciation and amortization	2,556	2,395	7,607	6,980
Port Supply [Member]
Segment Reporting Information [Line Items]
Assets	7,045	5,955	7,045	5,955
Net revenues	6,674	7,030	20,998	21,963
Contribution	(893)	(728)	(2,315)	(1,850)
Total capital expenditures	0	0	0	0
Depreciation and amortization	3	7	9	28
Direct-To-Customer [Member]
Segment Reporting Information [Line Items]
Assets	301	216	301	216
Net revenues	10,260	9,400	30,001	29,247
Contribution	1,978	1,878	5,742	5,463
Total capital expenditures	(228)	26	382	53
Depreciation and amortization	0	35	4	103
Unallocated [Member]
Segment Reporting Information [Line Items]
Assets	341,822	314,030	341,822	314,030
Total capital expenditures	757	480	1,245	2,925
Depreciation and amortization	$ 1,281	$ 1,423	$ 3,893	$ 3,775
Canada [Member]
Segment Reporting Information [Line Items]
Number of stores	10		10
Turkey [Member]
Segment Reporting Information [Line Items]
Number of stores	5		5
Maximum [Member]
Segment Reporting Information [Line Items]
Percentage of foreign revenue	5.00%	5.00%	5.00%	5.00%
Percent of foreign long-lived assets	2.00%	2.00%	2.00%	2.00%