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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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