Business Segments and Major Customers (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Dec. 28, 2013
Segment Reporting Information [Line Items]
Revenues	$ 16,237	$ 14,010
Income (loss) from operations	8	(138)
Total assets	44,717	33,597	36,824
North America [Member]
Segment Reporting Information [Line Items]
Revenues	7,974	8,792
Income (loss) from operations	1,779	2,126
Total assets	5,489	7,006	4,522
EMEA [Member]
Segment Reporting Information [Line Items]
Revenues	8,263	5,218
Income (loss) from operations	1,577	980
Total assets	11,778	5,126	7,194
Strategic Alliances [Member]
Segment Reporting Information [Line Items]
Income (loss) from operations	(145)	(127)
Unallocated Amount To Segment [Member]
Segment Reporting Information [Line Items]
Income (loss) from operations	(3,203)	(3,117)
Total assets	$ 27,450	$ 21,465	$ 25,108