Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended	6 Months Ended
Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Income Tax Disclosure [Abstract]
Income tax expense	$ 5,644,000	$ 7,526,000	$ 10,209,000	$ 14,157,000
Effective tax rate	24.40%	29.80%	25.80%	28.70%
Statutory federal income tax rate	21.00%	21.00%	21.00%	21.00%
Unrecognized tax benefits	$ 0		$ 0

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of unrecognized tax benefits.

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