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Selected Quarterly Financial Information (Unaudited) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 29, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 30, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Quarterly Financial Information Disclosure [Line Items]
Revenues	$ 7,741,000	$ 5,126,000	$ 5,944,000	$ 5,654,000	$ 11,397,000	$ 6,139,000	$ 5,927,000	$ 4,378,000	$ 24,465,005	$ 27,841,490	$ 22,642,566
Gross Profit	1,439,000	(16,000)	974,000	983,000	3,654,000	1,444,000	862,000	816,000
(Loss) income from continuing operations	(10,884,000)	(10,299,000)	(8,992,000)	(9,792,000)	(4,962,000)	(8,605,000)	(8,068,000)	(8,663,000)
Net income (loss) attributable to the controlling interest	$ (9,966,000)	$ (9,791,000)	$ (9,241,000)	$ (5,536,000)	$ (1,803,000)	$ (8,247,000)	$ (7,332,000)	$ (7,858,000)	$ (34,533,542)	$ (25,240,482)	$ (23,568,717)
Net loss per share:
Basic and Diluted (in dollars per share)	$ (0.14)	$ (0.13)	$ (0.13)	$ (0.08)	$ (0.02)	$ (0.11)	$ (0.10)	$ (0.12)	$ (0.47)	$ (0.36)	$ (0.37)
Shares used in computing net income per share:
Basic and diluted (in shares)	73,317,000	73,135,000	73,095,000	73,078,000	72,349,000	72,188,000	70,627,000	64,539,000	73,156,545	69,914,956	64,045,675
Gain on investments					$ 1,700,000

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