Segment Information (Sales And Long-Lived Assets By Geographic Location) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011	Jan. 01, 2011	Oct. 02, 2010	Jul. 03, 2010	Apr. 03, 2010	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Consolidated Net Sales	$ 43,278	$ 43,809	$ 47,768	$ 39,782	$ 44,035	$ 38,156	$ 41,748	$ 34,373	$ 174,637	$ 158,312	$ 141,764
Total Consolidated Long-Lived Assets	37,987				39,819				37,987	39,819	41,616
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Consolidated Net Sales									101,410	90,322	80,891
Total Consolidated Long-Lived Assets	30,878				31,786				30,878	31,786	32,451
Europe, Middle East And Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Consolidated Net Sales									36,230	34,631	33,238
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Consolidated Net Sales									24,187	22,438	18,906
International Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Consolidated Net Sales									12,810	10,921	8,729
Foreign Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Consolidated Long-Lived Assets	$ 7,109				$ 8,033				$ 7,109	$ 8,033	$ 9,165