Intangible Assets (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 30, 2013	Mar. 31, 2012
Intangible Assets (Additional Textual) [Abstract]
Total amortization expense	$ 0.9	$ 0.8
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

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration