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Segments and Geographical Information (Percentage of Net Revenues by Geographies) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 30, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Sep. 24, 2016	Jun. 25, 2016	Mar. 26, 2016	Dec. 30, 2017	Dec. 31, 2016	Dec. 26, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 11,397,000	$ 6,139,000	$ 5,927,000	$ 4,378,000	$ 6,373,000	$ 5,795,000	$ 4,355,000	$ 6,119,000	$ 27,841,490	$ 22,642,566	$ 32,054,419
Percent of Total Revenue									10.00%
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									$ 16,539,000	9,237,000	21,758,000
Others
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									86,000	41,000	395,000
Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									16,625,000	9,278,000	22,153,000
Asia-Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									5,406,000	9,849,000	7,160,000
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									$ 5,810,000	$ 3,516,000	$ 2,741,000
Sales Revenue, Net
Revenues from External Customers and Long-Lived Assets [Line Items]
Percent of Total Revenue									100.00%	100.00%	100.00%
Sales Revenue, Net | UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Percent of Total Revenue									59.00%	41.00%	68.00%
Sales Revenue, Net | Others
Revenues from External Customers and Long-Lived Assets [Line Items]
Percent of Total Revenue									0.00%	0.00%	1.00%
Sales Revenue, Net | Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Percent of Total Revenue									60.00%	41.00%	69.00%
Sales Revenue, Net | Asia-Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Percent of Total Revenue									19.00%	43.00%	22.00%
Sales Revenue, Net | Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Percent of Total Revenue									21.00%	16.00%	9.00%

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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