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Derivative Financial Instruments (Details) - USD ($)
3 Months Ended
Jan. 04, 2016
Jan. 23, 2014
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Derivatives, Fair Value [Line Items]          
Hedge ineffectiveness gain (loss)     $ 0 $ 0  
Fair value of derivative instrument [Abstract]          
Fair value of interest rate swaps     (902,000)   $ (569,000)
Interest Rate Swap Contracts          
Derivatives, Fair Value [Line Items]          
Percentage of Term Loan balance covered under interest rate swap contract   75.00%      
Termination of contract date Jan. 01, 2019 Sep. 29, 2023      
Notional amount $ 9,100,000   7,500,000    
Unrealized net losses recorded in Accumulated other comprehensive loss     $ 902,000    
Interest Rate Swap Contracts | One Month LIBOR          
Derivatives, Fair Value [Line Items]          
One month variable interest rate (in hundredths)     0.44%    
Interest Rate Swap Contracts | Derivatives in Cash Flow Hedging Relationships | Interest Expense          
Effect of interest rate swap contract accounted for derivative instrument on Consolidated Statements of Income [Abstract]          
Amount of Gain (Loss) Recognized in Accumulated OCI (Effective Portion)     $ (333,000) (128,000)  
Amount of Loss Reclassified from Accumulated OCI into Income (Effective Portion)     $ 63,000 $ 52,000  
Interest Rate Swap, Effective January 23, 2014          
Derivatives, Fair Value [Line Items]          
Fixed interest rate (in hundredths)     2.86%    
Interest Rate Swap Effective January 4, 2016          
Derivatives, Fair Value [Line Items]          
Fixed interest rate (in hundredths)     1.28%