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Number of federal, state and local income tax returns under examination.

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Base rental rate before applicable operating expenses incurred monthly for leased space.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

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Commitments and Contingencies (Details)	12 Months Ended
Commitments and Contingencies (Details)	Apr. 01, 2018 USD ($) item	Mar. 26, 2017 USD ($)	Mar. 27, 2016 USD ($)
Commitments and contingencies
Rent expense	$ 3,041,700	$ 3,047,500	$ 3,035,600
Minimum future obligations
2019	3,003,400
2020	2,997,000
2021	2,111,600
2022	203,200
2023	14,900
Total	$ 8,330,100
Income tax examinations
Number of tax returns under examination \| item	0
Leased office space in Timonium, Maryland \| Minimum
Commitments and contingencies
Base rental rate per month	$ 169,400
Leased office space in Timonium, Maryland \| Maximum
Commitments and contingencies
Base rental rate per month	185,100
Leased office and warehouse space in Hunt Valley, Maryland \| Minimum
Commitments and contingencies
Base rental rate per month	37,100
Leased office and warehouse space in Hunt Valley, Maryland \| Maximum
Commitments and contingencies
Base rental rate per month	39,300
Leased office and warehouse space in San Antonio, Texas \| Minimum
Commitments and contingencies
Base rental rate per month	16,900
Leased office and warehouse space in San Antonio, Texas \| Maximum
Commitments and contingencies
Base rental rate per month	$ 19,100