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Retirement Plans - Summary of Categories in Fair Value Hierarchy (Parenthetical) (Details 10) (USD $)
Dec. 31, 2013
Dec. 31, 2012
Fair values of pension plan assets    
Real estate investment grade securities $ 941,224cts_InvestmentGradeSecuritiesBackedByGovernment $ 1,148,218cts_InvestmentGradeSecuritiesBackedByGovernment