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CASH AND EQUIVALENTS AND MARKETABLE SECURITIES (Details) (USD $) |  |  | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 28, 2014 | Dec. 28, 2013 | Jun. 29, 2013 Debt securities | Jun. 28, 2014 U.S. government and agency backed securities | Dec. 28, 2013 U.S. government and agency backed securities | Jun. 28, 2014 Corporate debt and certificates of deposit | Dec. 28, 2013 Corporate debt and certificates of deposit
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |  |  |
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities |  |  | $ 0 |  |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 85,739,910 | 96,738,018 |  | 65,056,839 | 68,970,505 | 20,683,071 | 27,767,513
Unrealized Gains | 0 | 0 |  | 0 | 0 | 0 | 0
Unrealized Losses | (146,394) | (765,483) |  | (116,328) | (686,113) | (30,066) | (79,370)
Fair Value | 85,593,516 | 95,972,535 |  | 64,940,511 | 68,284,392 | 20,653,005 | 27,688,143
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |
Less than one year | 31,733,972 |  |  | 14,650,279 |  | 17,083,693 |
One to five years | 43,478,301 |  |  | 40,890,239 |  | 2,588,062 |
Greater than five years | 10,381,243 |  |  | 9,399,993 |  | 981,250 |
Available-for-sale Securities | $ 85,593,516 |  |  | $ 64,940,511 |  | $ 20,653,005 |

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- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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- Definition Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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- Definition This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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