Consolidated Statements Of Cash Flows - USD ($)	12 Months Ended
	Mar. 27, 2021	Mar. 28, 2020	Mar. 30, 2019
Operating activities:
Net income	$ 34,319,000	$ 58,024,000	$ 79,752,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	77,304,000	64,986,000	55,531,000
Share-based compensation expense	2,391,000	3,813,000	4,022,000
(Gain) loss on disposal of assets	(491,000)	(257,000)	56,000
Impairment of long-lived assets	144,000	6,579,000	0
Deferred income tax expense	10,854,000	11,473,000	12,517,000
Change in operating assets and liabilities (excluding acquisitions)
Accounts receivables	(814,000)	107,000	(1,361,000)
Inventories	26,570,000	(11,841,000)	(9,126,000)
Other current assets	22,566,000	5,379,000	(514,000)
Other non-current assets	3,331,000	24,968,000	(427,000)
Accounts payables	12,874,000	(4,090,000)	19,037,000
Accrued expenses	21,355,000	(3,871,000)	(3,019,000)
Federal and state income taxes receivable	(2,788,000)	(2,470,000)	(1,401,000)
Other long-term liabilities	(22,326,000)	(31,100,000)	(1,967,000)
Long-term income taxes payable	(384,000)	(371,000)	(209,000)
Cash provided by operating activities	184,905,000	121,329,000	152,891,000
Investing activities
Capital expenditures	(51,725,000)	(55,918,000)	(44,468,000)
Acquisitions, net of cash acquired	(17,154,000)	(104,436,000)	(62,427,000)
Proceeds from the disposal of assets	659,000	967,000	723,000
Other	1,960,000	576,000	289,000
Cash used for investing activities	(66,260,000)	(158,811,000)	(105,883,000)
Financing activities:
Proceeds from borrowings		814,181,000	433,460,000
Principal payments on long-term debt, capital leases and financing obligations	(409,783,000)	(412,725,000)	(463,989,000)
Exercise of stock options	6,278,000	6,171,000	14,640,000
Dividends paid	(29,782,000)	(29,715,000)	(26,814,000)
Deferred financing costs	(874,000)	(1,168,000)
Cash (used for) provided by financing activities	(434,161,000)	376,744,000	(42,703,000)
Net (decrease) increase in cash	(315,516,000)	339,262,000	4,305,000
Cash at beginning of year	345,476,000	6,214,000	1,909,000
Cash at end of year	29,960,000	345,476,000	6,214,000
Supplemental information:
Interest paid, net	26,376,000	27,250,000	25,422,000
Income taxes	2,334,000	12,745,000	9,680,000
Leased assets obtained in exchange for new finance lease liabilities	104,165,000	64,393,000	$ 14,632,000
Leased assets obtained in exchange for new operating lease liabilities	$ 24,409,000	$ 6,980,000