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Long-Term Debt (Details) - Line of Credit [Member]
12 Months Ended
Apr. 01, 2015
USD ($)
Dec. 31, 2015
USD ($)
Debt Instrument [Line Items]    
Credit agreement term 5 years  
Maximum borrowing capacity $ 50,000,000  
Outstanding borrowings   $ 0
Dividend payment from borrowed funds (maximum) 10,000,000  
Total debt ratio (not greater than)   3
Interest coverage ratio (not less than)   3
Revolving Loan Facility [Member]    
Debt Instrument [Line Items]    
Maximum outstanding loan amount $ 75,000,000  
Minimum [Member]    
Debt Instrument [Line Items]    
Basis spread on variable rate (basis points) 25.00%  
Maximum [Member]    
Debt Instrument [Line Items]    
Basis spread on variable rate (basis points) 100.00%  
LIBOR [Member]    
Debt Instrument [Line Items]    
Basis spread on variable rate (basis points)   125.00%
LIBOR [Member] | Minimum [Member]    
Debt Instrument [Line Items]    
Basis spread on variable rate (basis points) 125.00%  
LIBOR [Member] | Maximum [Member]    
Debt Instrument [Line Items]    
Basis spread on variable rate (basis points) 200.00%  
Federal Funds Effective Swap Rate [Member]    
Debt Instrument [Line Items]    
Basis spread on variable rate (basis points) 50.00%  
One-Month London Interbank Offered Rate (LIBOR) [Member]    
Debt Instrument [Line Items]    
Basis spread on variable rate (basis points) 100.00%