Summary of Significant Accounting Policies and Nature of Operations (Details Textual) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011	Dec. 31, 2011
Summary of Significant Accounting Policies and Nature of Operations (Textual) [Abstract]
Inventory	$ 49,229,000		$ 49,229,000		$ 52,245,000
Inventory in-transit	4,800,000		4,800,000		9,600,000
Impairment losses on long-lived assets and intangibles			0	0
Impairment losses goodwill and indefinite-lived intangible asset			0	0
Advertising costs	4,600,000	5,800,000	10,000,000	11,200,000
Standard product warranty useful life, minimum			1 year
Standard product warranty useful life, maximum			5 years
Adjustments to warranty liabilities			$ 232,000