Business Segments and Major Customers (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Oct. 03, 2015	Sep. 27, 2014	Jan. 03, 2015
Segment Reporting Information [Line Items]
Revenues	$ 21,205	$ 19,332	$ 56,144	$ 52,989
Income (loss) from operations	(478)	838	(3,714)	(603)
Total assets	48,065	48,079	48,065	48,079	$ 42,276
North America [Member]
Segment Reporting Information [Line Items]
Revenues	8,837	9,572	24,227	25,806
Income (loss) from operations	2,302	2,920	5,428	6,895
Total assets	6,690	7,610	6,690	7,610	7,398
EMEA [Member]
Segment Reporting Information [Line Items]
Revenues	12,198	9,760	31,541	27,183
Income (loss) from operations	1,588	1,769	3,942	5,091
Total assets	11,719	13,420	11,719	13,420	6,099
Strategic Alliances [Member]
Segment Reporting Information [Line Items]
Revenues	170	0	376	0
Income (loss) from operations	(118)	(352)	(977)	(874)
Total assets	2,769	3,000	2,769	3,000	3,030
Unallocated Amount To Segment [Member]
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Income (loss) from operations	(4,250)	(3,499)	(12,107)	(11,715)
Total assets	$ 26,887	$ 24,049	$ 26,887	$ 24,049	$ 25,749