Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details)

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Fair Value Measurements (Details) (USD $)
 3 Months Ended 12 Months Ended
Mar. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Earn-out obligations - current $ 588,000 $ 0  
Earn-out obligations, less current portion 8,648,000 9,062,000  
Offset amount included in accumulated other comprehensive loss, net of tax 60,000 125,000  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Balance as of December 31, 2013 9,062,000    
Maximum potential cash payment 40,000,000    
Earn-out payments   219,000 7,100,000
Fair value adjustment included in earnings 174,000    
Fair Value Inputs, Discount Rate 11.50%    
Reclassification from long-term to short-term 0    
Balance as of March 31, 2014 9,236,000 9,062,000  
Short Term Obligations [Member]
      
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Balance as of December 31, 2013 0    
Fair value adjustment included in earnings 0    
Reclassification from long-term to short-term 588,000    
Balance as of March 31, 2014 588,000    
Long Term Earn Out Obligations [Member]
      
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Balance as of December 31, 2013 9,062,000    
Fair value adjustment included in earnings 174,000    
Reclassification from long-term to short-term (588,000)    
Balance as of March 31, 2014 8,648,000    
Other Assets [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Non-COLI assets held in DSC plan 211,000 198,000  
Accrued Expenses [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Interest rate swaps 156,000 326,000  
Current Portion of Earn Out Obligations [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Earn-out obligations - current 588,000 0  
Earn-out Obligations [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Earn-out obligations, less current portion $ 8,648,000 $ 9,062,000