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Long Term Debt (Narratives) (Details) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Apr. 24, 2015
Oct. 31, 2013
Mar. 29, 2013
Aug. 07, 2009
Jun. 30, 2015
Dec. 31, 2014
Credit Agreement [Line Items]            
Previous Approved Credit Facility       $ 20,000    
Secured Debt         $ 20,650 $ 21,450
Line of Credit Facility, Maximum Borrowing Capacity     $ 50,000      
Minimum percentage of Term Loan and the DDTL that company was required to fix the rate of interest on         50.00% 50.00%
Line of Credit Facility, Remaining Borrowing Capacity         $ 8,500  
Interest Rate In Excess Of LIBOR On Credit Facility       3.00%    
DDTL Threshold For Dollar For Dollar Reduction In Revolving Line     10,000      
Transfer Of Delayed Draw Down Term Loan Capacity To Revolver Capacity   $ 5,000        
Lender Approval To Fund Acquisition With Cash Promissory Note In Excess Of Threshold         6,000  
Lender Approval To Fund Acquisition With Equity In Excess Of Threshold         10,000  
Revolving Credit Facility [Member]            
Credit Agreement [Line Items]            
Secured Debt     $ 25,000   $ 5,900 $ 4,200
Maturity Dates     Mar. 29, 2016      
Basis Spread Over LIBOR 2.25%          
Interest Rate As Of Reporting Date         2.44%  
Term Loan [Member]            
Credit Agreement [Line Items]            
Secured Debt     $ 15,000   $ 8,250 9,750
Maturity Dates     Mar. 29, 2018      
Basis Spread Over LIBOR 2.75%          
Interest Rate As Of Reporting Date         3.96%  
Delayed Drawdown Term Loan [Member]            
Credit Agreement [Line Items]            
Secured Debt     $ 15,000   $ 6,500 $ 7,500
Maturity Dates     Mar. 29, 2018      
Basis Spread Over LIBOR 2.75%          
Maximum Borrowings Available Under The Current Credit Agreement   $ 10,000        
Interest Rate As Of Reporting Date         3.43%