Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012 segments	Jul. 02, 2011	Dec. 31, 2011
Segment Reporting Information [Line Items]
Assets	$ 394,188	$ 363,523	$ 394,188	$ 363,523	$ 335,657
Number of Reportable Segments			3
Revenues	243,572	235,963	365,040	349,780
Contribution	54,008	55,342	58,755	55,997
Indirect COGS not included in Contribution	(6,903)	(6,974)	(12,931)	(12,467)
General and Administrative Expense	(8,817)	(8,122)	(17,944)	(15,397)
Interest Expense	(224)	(273)	(444)	(440)
Income Tax Expense (Benefit)	(15,448)	4,770	(11,067)	4,705
Net Income (Loss) Attributable to Parent	22,616	44,743	16,369	32,398
Payments to Acquire Property, Plant, and Equipment	5,405	5,371	8,806	10,633
Depreciation, Depletion and Amortization	3,913	3,519	7,673	7,026
Stores [Member]
Segment Reporting Information [Line Items]
Assets	35,539	30,419	35,539	30,419
Revenues	222,881	214,842	330,975	315,000
Contribution	52,030	53,015	56,413	53,534
Payments to Acquire Property, Plant, and Equipment	4,642	4,156	7,707	8,161
Depreciation, Depletion and Amortization	2,604	2,269	5,051	4,584
Port Supply [Member]
Segment Reporting Information [Line Items]
Assets	8,736	7,784	8,736	7,784
Revenues	8,061	8,438	14,324	14,933
Contribution	(435)	(241)	(1,422)	(1,122)
Payments to Acquire Property, Plant, and Equipment	0	0	0	0
Depreciation, Depletion and Amortization	3	9	6	21
Direct-To-Customer [Member]
Segment Reporting Information [Line Items]
Assets	578	445	578	445
Revenues	12,630	12,683	19,741	19,847
Contribution	2,413	2,568	3,764	3,585
Payments to Acquire Property, Plant, and Equipment	303	27	610	27
Depreciation, Depletion and Amortization	1	34	4	68
Unallocated [Member]
Segment Reporting Information [Line Items]
Assets	349,335	324,875	349,335	324,875
Payments to Acquire Property, Plant, and Equipment	460	1,188	489	2,445
Depreciation, Depletion and Amortization	$ 1,305	$ 1,207	$ 2,612	$ 2,353
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%