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Financial Instruments (Tables) | 12 Months Ended
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Dec. 29, 2018
Financial Instruments [Abstract] |
Fair Value, by Balance Sheet Grouping |
|  |  | Fair Value Measurement at December 29, 2018 Using:
| Total |  | Level 1 |  | Level 2 |  | Level 3
Cash and cash equivalents | $ | 14,326,347 |  |  | $ | 14,326,347 |  |  | $ | — |  |  | $ | — |
U.S. government and agency backed securities | 12,810,923 |  |  | — |  |  | 12,810,923 |  |  | — |
Corporate debt | 10,107,093 |  |  | — |  |  | 10,107,093 |  |  | — |
GCS Holdings | 288,026 |  |  | 288,026 |  |  | — |  |  | — |
Equity Investments | 5,565,499 |  |  | — |  |  | — |  |  | 5,565,499 |
| $ | 43,097,888 |  |  | $ | 14,614,373 |  |  | $ | 22,918,016 |  |  | $ | 5,565,499 |
|  |  | Fair Value Measurement at December 30, 2017 Using:
| Total |  | Level 1 |  | Level 2 |  | Level 3
Cash and cash equivalents | $ | 24,848,227 |  |  | $ | 24,848,227 |  |  | $ | — |  |  | $ | — |
U.S. government and agency backed securities | 34,725,811 |  |  | 6,927,323 |  |  | 27,798,488 |  |  | — |
Corporate debt | 8,980,906 |  |  | — |  |  | 8,980,906 |  |  | — |
Certificates of deposit | 200,740 |  |  | — |  |  | 200,740 |  |  | — |
GCS Holdings | 478,546 |  |  | 478,546 |  |  | — |  |  | — |
Warrant | 2,000,000 |  |  | — |  |  | — |  |  | 2,000,000 |
| $ | 71,234,230 |  |  | $ | 32,254,096 |  |  | $ | 36,980,134 |  |  | $ | 2,000,000 |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] | Changes in Level 3 investments are as follows:
| December 30, 2017 |  | Net unrealized gains/(losses) |  | Purchases, issuances and settlements |  | Transfers in and or out of Level 3 |  | December 29, 2018
Equity Investments | $ | — |  |  | $ | (284,317 | ) |  | $ | 5,849,816 |  |  | $ | — |  |  | $ | 5,565,499 |
Warrant | 2,000,000 |  |  | (50,184 | ) |  | (1,949,816 | ) |  | — |  |  | — |
| $ | 2,000,000 |  |  | $ | (334,501 | ) |  | $ | 3,900,000 |  |  | $ | — |  |  | $ | 5,565,499 |
Available-for-sale Securities | Investments in available-for-sale marketable debt securities are as follows at December 29, 2018 and December 30, 2017:
| Amortized Cost |  | Unrealized Losses |  | Fair Value
| 2018 |  | 2017 |  | 2018 |  | 2017 |  | 2018 |  | 2017
U.S. government and agency backed securities | $ | 13,064,418 |  |  | $ | 35,014,593 |  |  | $ | (253,495 | ) |  | $ | (288,782 | ) |  | $ | 12,810,923 |  |  | $ | 34,725,811 |
Corporate debt | 10,175,084 |  |  | 8,988,608 |  |  | (67,991 | ) |  | (7,702 | ) |  | 10,107,093 |  |  | 8,980,906 |
Certificates of deposits | — |  |  | 201,000 |  |  | — |  |  | (260 | ) |  | — |  |  | 200,740 |
Total | $ | 23,239,502 |  |  | $ | 44,204,201 |  |  | $ | (321,486 | ) |  | $ | (296,744 | ) |  | $ | 22,918,016 |  |  | $ | 43,907,457 |
Investments Classified by Contractual Maturity Date | The contractual maturity of the Company’s marketable debt securities is as follows at December 29, 2018:
| Less than One year |  | One to Five years |  | Total
U.S. government and agency backed securities | $ | 3,741,183 |  |  | $ | 9,069,740 |  |  | $ | 12,810,923 |
Corporate debt | 2,709,074 |  |  | 7,398,019 |  |  | 10,107,093 |
Total | $ | 6,450,257 |  |  | $ | 16,467,759 |  |  | $ | 22,918,016 |

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- Definition Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities. + References No definition available. + Details
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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13467-108611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19279-110258 + Details
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- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References No definition available. + Details
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