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Derivative Instruments (Details) - Interest Rate Swap [Member] - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2018
Oct. 01, 2017
Sep. 30, 2018
Oct. 01, 2017
Apr. 01, 2018
Derivative [Line Items]          
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net $ (15) $ 5 $ 12 $ (63)  
Cash Flow Hedge Derivative Instrument Assets at Fair Value 835   835   $ 819
Debt Instrument, Redemption, Period One [Member]          
Derivative [Line Items]          
Derivative, Notional Amount 40,000   40,000    
Debt Instrument, Redemption, Period Two [Member]          
Derivative [Line Items]          
Derivative, Notional Amount 30,000   30,000    
Debt Instrument, Redemption, Period Three [Member]          
Derivative [Line Items]          
Derivative, Notional Amount $ 20,000   $ 20,000