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Interest Rate Swap (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Feb. 19, 2021
Apr. 01, 2017
Mar. 31, 2016
Apr. 01, 2017
Mar. 26, 2016
Dec. 31, 2016
Dec. 26, 2015
Derivative [Line Items]              
Derivative Asset, Fair Value, Gross Liability   $ 3,284   $ 3,284 $ 0 $ 2,817  
Derivative Instruments, Loss Recognized in Other Comprehensive Income (Loss), Effective Portion       461 0    
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax       0 0    
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred   100          
Fair Value, Option, Changes in Fair Value, Gain (Loss)       281 0 1,392  
Interest Rate Swap Inception Date     Mar. 31, 2016        
Derivative Liability, Notional Amount   187,500 $ 197,500 187,500      
Other Comprehensive Income (Loss), Net of Tax       281 0 1,392  
Accumulated Other Comprehensive Income (Loss), Net of Tax   1,673   1,673 0 1,392  
Derivative Instruments, Loss Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing       6 0    
Assets Needed for Immediate Settlement, Aggregate Fair Value   0   0      
Interest Rate Swap Long Term Portion [Member]              
Derivative [Line Items]              
Other Short-term Borrowings         0    
Derivative Asset   3,183   3,183   3,215  
Interest Rate Swap Short Term Portion [Member]              
Derivative [Line Items]              
Other Short-term Borrowings         $ 0 (398)  
Derivative Asset   $ 101   $ 101      
Beginning Balance [Member]              
Derivative [Line Items]              
Accumulated Other Comprehensive Income (Loss), Net of Tax           $ 1,392 $ 0
Subsequent Event              
Derivative [Line Items]              
Interest Rate Swap Maturity Date Feb. 19, 2021