Intangible Assets (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011
Intangible Assets (Additional Textual) [Abstract]
Total amortization expense	$ 0.8			$ 0.3	$ 2.5	$ 1.1
Reduction in fair value of royalty payments			0.6		0.6
Reduction in fair value of goodwill		0.5	0.4		0.4
Reduction in fair value of intangible assets			0.2		0.2
Other adjustment to intangible assets	$ 0
Minimum [Member]
Intangible Assets (Textual) [Abstract]
Finite-lived intangibles estimated lives					2 years
Maximum [Member]
Intangible Assets (Textual) [Abstract]
Finite-lived intangibles estimated lives					10 years