Annual report pursuant to Section 13 and 15(d)

Income Taxes (Effective Tax Rate Reconciliation) (Details)

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Income Taxes (Effective Tax Rate Reconciliation) (Details) (USD $)
12 Months Ended
Dec. 29, 2012
Dec. 31, 2011
Jan. 01, 2011
Income Tax Expense Reconciliation      
Tax at U.S. statutory rates $ 2,155,909 $ 2,975,054 $ 2,091,000
State income taxes, net of federal tax benefit 117,937 133,133 148,000
Manufacturing exemption (179,882) (162,398) (160,000)
Other, net 12,036 7,211 37,000
Total $ 2,106,000 $ 2,953,000 $ 2,116,000
Effective Tax Rate Reconciliation      
Tax at U.S. statutory rates (percent) 34.00% 34.00% 34.00%
State income taxes, net of federal tax benefit (percent) 1.90% 1.50% 2.40%
Manufacturing exemption (percent) (2.80%) (1.90%) (2.60%)
Other, net (percent) 0.10% 0.10% 0.60%
Total (percent) 33.20% 33.70% 34.40%