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Pension and Profit Sharing - Pension Plan Assets by Fair Value Hiearchy (Details) (USD $)
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Pension plan assets $ 1,703,602 $ 1,325,402 $ 1,246,736
Money Market Fund
     
Pension plan assets 8,322 19,609  
Acme United Common Stock
     
Pension plan assets 149,000 110,400  
Equity Common and Collected Funds
     
Pension plan assets 1,054,416 811,113  
Fixed Income Common and Collected Funds
     
Pension plan assets 491,864 384,280  
Level 1
     
Pension plan assets 157,322 130,009  
Level 1 | Money Market Fund
     
Pension plan assets 8,322 19,609  
Level 1 | Acme United Common Stock
     
Pension plan assets 149,000 110,400  
Level 2
     
Pension plan assets 1,546,280 1,195,393  
Level 2 | Equity Common and Collected Funds
     
Pension plan assets 1,054,416 811,113  
Level 2 | Fixed Income Common and Collected Funds
     
Pension plan assets $ 491,864 $ 384,280