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FAIR VALUE MEASUREMENTS (Details) (USD $)	Mar. 29, 2014	Dec. 28, 2013
Level 1
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	$ 41,119,175	$ 34,731,771
Level 1 | Money Markets, Cash and Equivalents
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	14,811,610	16,756,666
Level 1 | U.S. Government Securities
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	25,013,792	16,542,003
Level 1 | Corporate Debt
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value
Level 1 | Certificates of Deposit
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value
Level 1 | Vuzix [Member]
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	1,293,773	1,433,102
Level 2
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	66,320,420	79,430,532
Level 2 | Money Markets, Cash and Equivalents
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value
Level 2 | U.S. Government Securities
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	48,486,311	51,742,389
Level 2 | Corporate Debt
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	4,709,186	12,984,331
Level 2 | Certificates of Deposit
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	13,124,923	14,703,812
Level 2 | Vuzix [Member]
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value		0
Level 3
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	0	0
Level 3 | Money Markets, Cash and Equivalents
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	0	0
Level 3 | U.S. Government Securities
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	0	0
Level 3 | Corporate Debt
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	0	0
Level 3 | Certificates of Deposit
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	0	0
Level 3 | Vuzix [Member]
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	0	0
Estimate of Fair Value
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	107,439,595	114,162,303
Estimate of Fair Value | Money Markets, Cash and Equivalents
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	14,811,610	16,756,666
Estimate of Fair Value | U.S. Government Securities
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	73,500,103	68,284,392
Estimate of Fair Value | Corporate Debt
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	4,709,186	12,984,331
Estimate of Fair Value | Certificates of Deposit
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	13,124,923	14,703,812
Estimate of Fair Value | Vuzix [Member]
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	$ 1,293,773	$ 1,433,102

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- Definition

The aggregate fair value as of the balance sheet date of financial instruments and other positions owned by the entity including: (1) mortgages, mortgage-backed and asset backed securities; (2) US government and agency obligations; (3) state and municipal government obligations; (4) other sovereign government debt; (5) corporate obligations; (6) corporate equities; (7) principal investments; (8) derivative contracts; and (9) physical commodities. Includes both pledged and unpledged holdings.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 940

-SubTopic 320

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6475986&loc=d3e42546-110969



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-BRD

-Paragraph 38, 40

-IssueDate 2006-05-01

-Chapter 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-BRD

-Paragraph 80

-Subparagraph Exhibit 4-3

-IssueDate 2006-05-01

-Chapter 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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