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Postretirement Benefit Plans (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 26, 2016
Mar. 28, 2015
Mar. 29, 2014
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate 3.60% 3.20%  
Accrued salaries and benefits $ 21,239 $ 24,132  
Maximum employer contribution matching percentage 50.00%    
Percentage of employees' annual contribution that qualifies for employer contribution matching 8.00%    
Employee matching contribution expense $ 4,300 $ 2,500 $ 1,800
Pension Plan [Member]      
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year 500    
Accrued salaries and benefits $ 500