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Commitments and Contingencies (Details) - USD ($)
12 Months Ended
Mar. 27, 2016
Mar. 29, 2015
Mar. 30, 2014
Commitments and contingencies      
Rent expense $ 3,035,600 $ 2,970,300 $ 3,004,300
Minimum future obligations      
2017 2,987,400    
2018 2,024,800    
2019 147,900    
2020 15,400    
2021 700    
Total 5,176,200    
Leased office space in Timonium, Maryland | Minimum      
Commitments and contingencies      
Base rental rate per month 167,600    
Leased office space in Timonium, Maryland | Maximum      
Commitments and contingencies      
Base rental rate per month 177,700    
Leased office and warehouse space in Hunt Valley, Maryland | Minimum      
Commitments and contingencies      
Base rental rate per month 34,300    
Leased office and warehouse space in Hunt Valley, Maryland | Maximum      
Commitments and contingencies      
Base rental rate per month 35,700    
Leased office and warehouse space in San Antonio, Texas | Minimum      
Commitments and contingencies      
Base rental rate per month 15,800    
Leased office and warehouse space in San Antonio, Texas | Maximum      
Commitments and contingencies      
Base rental rate per month $ 16,900