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Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Summary of Significant Accounting Policies [Abstract]      
Accretion (Amortization) of Discounts and Premiums, Investments $ 661 $ 894  
Cash Equivalents, at Carrying Value 102,247 27,219  
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 15,000 99,000 182,000
Advertising Expense 11,529 9,783 7,312
Shipping, Handling and Transportation Costs 14,887 14,140 12,190
Defined Benefit Plan Matching Contribution Percentage Of Employees Contributions 50.00%    
Defined Benefit Plan Maximum Percentage To Be Matched Of Employees Compensation 6.00%    
Pension Expense $ 1,259 $ 1,206 $ 844