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FAIR VALUE MEASUREMENTS (Details) - USD ($)	3 Months Ended
	Apr. 01, 2017	Dec. 31, 2016
Fair Value Measurements [Line Items]
Noncash or Part Noncash Acquisition, Interest Acquired	15.00%
Financial Instruments, Owned, at Fair Value	$ 68,286,357	$ 77,529,350
Money Markets, Cash and Equivalents
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	18,393,066	15,822,495
U.S. Government Securities
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	34,915,268	36,091,261
Corporate Debt
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	6,832,185	7,557,029
Certificates of Deposit
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	7,610,050	17,727,111
GCS Holdings [Member]
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	261,788
GCS
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value		331,454
Others [Member]
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	274,000
Level 1
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	25,598,514	23,298,716
Level 1 | Money Markets, Cash and Equivalents
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	18,393,066	15,822,495
Level 1 | U.S. Government Securities
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	6,943,660	7,144,767
Level 1 | GCS Holdings [Member]
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	261,788
Level 1 | GCS
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value		331,454
Level 1 | Others [Member]
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	0
Level 2
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	42,413,843	54,230,634
Level 2 | U.S. Government Securities
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	27,971,608	28,946,494
Level 2 | Corporate Debt
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	6,832,185	7,557,029
Level 2 | Certificates of Deposit
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	7,610,050	17,727,111
Level 2 | GCS Holdings [Member]
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	0
Level 2 | Others [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	274,000	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 | GCS Holdings [Member]
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	0
Level 3 | GCS
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value		$ 0
Level 3 | Others [Member]
Fair Value Measurements [Line Items]
Financial Instruments, Owned, at Fair Value	$ 274,000

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Fair Value Measurements [Line Items]

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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=35711157&loc=d3e42546-110969

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The level of ownership or equity interest acquired in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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