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Investments (Details 2) (USD $) | 12 Months Ended |  |  | 12 Months Ended |  |  | 0 Months Ended | 1 Months Ended | 12 Months Ended
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Dec. 29, 2012 | Dec. 31, 2011 | Dec. 28, 2013 BridgeFunds, LLC | Dec. 29, 2012 BridgeFunds, LLC | Dec. 29, 2012 Tomsten | Dec. 31, 2011 Tomsten | Dec. 28, 2013 Tomsten | Jun. 30, 2011 Tomsten Rights Offering | Sep. 30, 2010 Investment in senior subordinated promissory notes in BridgeFunds | Dec. 31, 2010 Investment in senior subordinated promissory notes in BridgeFunds | Dec. 28, 2013 Investment in senior subordinated promissory notes in BridgeFunds | Dec. 29, 2012 Investment in senior subordinated promissory notes in BridgeFunds | Dec. 31, 2011 Investment in senior subordinated promissory notes in BridgeFunds | Dec. 31, 2004 Investment in senior subordinated promissory notes in BridgeFunds
Investments |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment at cost |  |  |  |  |  |  | $ 8,500,000 | $ 1,000,000 |  |  |  |  |  |
Investment owned as a percentage of outstanding common stock |  |  |  |  |  |  | 22.00% |  |  |  |  |  |  |
Losses from equity investments | 2,492,900 | 515,800 |  |  | 697,300 | 515,800 |  |  |  |  |  |  |  |
Carrying amount of investment |  |  | 0 | 0 | 0 |  |  |  |  |  |  |  |  |
Commitment to lend pursuant to senior subordinated promissory note |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,000,000
Annual rate of Interest (as a percent) |  |  |  |  |  |  |  |  | 15.00% |  |  |  |  | 12.00%
Extension period to maturity date |  |  |  |  |  |  |  |  |  | 1 year |  | 1 year | 1 year |
Interest received |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 28,300 |
Impairment charges | $ 1,324,400 | $ 883,100 |  |  | $ 1,800,000 |  |  |  |  |  |  | $ 1,300,000 | $ 900,000 |

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- Definition The interest rate for investments that have an interest rate. For fixed rate investments, this indicates the fixed interest rate. If the investment has a variable interest rate, the rate stated here may be the rate that is currently relevant. In this case the "Investment, Interest Rate is Current Rate for Variable Rate Investment Flag", "Investment, Interest Rate is Discount Rate at Purchase Flag", "Investment, Interest Rate Reflects Current Yield Flag" should be used. If one of these flags are not appropriate to explain the interest rate that is indicated, then a new flag should be added or an explanation should be included in "Investment, Additional Information". + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 12 -Sentence Column A + Details
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- Definition The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 35 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=27723805&loc=d3e25351-111560 + Details
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- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 9 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=16385135&loc=d3e33749-111570 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.12) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 11 -Article 7 + Details
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- Definition Interest received on loans and other debt instruments during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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