Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Mar. 27, 2022	Mar. 28, 2021	Mar. 29, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ (2,700,800)	$ (8,742,900)	$ (21,568,900)
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Depreciation and amortization	2,484,900	3,744,500	4,026,100
Goodwill impairment			11,677,700
Gain on sale of discontinued operations		(3,020,800)
Non-cash stock-based compensation expense	1,338,900	1,211,000	1,174,600
Deferred income taxes	119,100	3,032,500	(2,977,200)
Change in trade accounts receivable	(5,500,600)	12,676,000	11,097,800
Change in product inventory	(1,688,400)	9,279,900	2,697,400
Change in prepaid expenses and other current assets	1,294,200	2,678,200	92,400
Change in income taxes receivable	3,020,500	(4,685,800)	(6,237,100)
Change in other assets and other liabilities	(1,731,000)	(3,304,200)	(251,400)
Change in trade accounts payable	2,514,700	(15,197,600)	905,300
Change in payroll, benefits and taxes	(1,049,300)	2,021,500	(1,671,200)
Change in sales tax liabilities	384,200	353,100	(298,200)
Change in accrued expenses and other current liabilities	(982,200)	(729,600)	2,240,900
Net cash provided by (used in) operating activities	(2,495,800)	(684,200)	908,200
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(9,500,800)	(11,855,900)	(6,845,700)
Proceeds from sale of discontinued operations		9,201,500
Net cash provided by (used in) investing activities	(9,500,800)	(2,654,400)	(6,845,700)
CASH FLOWS FROM FINANCING ACTIVITIES
Net borrowings (repayments) from revolving line of credit short term		(25,565,300)	11,185,800
Borrowings from revolving line of credit long term	266,634,400	137,868,500
Repayments to revolving line of credit long term	(260,303,000)	(107,283,900)
Payments of debt issuance costs	(224,100)	(698,300)
Payments on long term debt	(57,800)		(2,300)
Proceeds from debt issuance	6,500,000
Proceeds from issuance of stock	157,500	199,200	262,400
Proceeds from exercise of stock options			680,600
Cash dividends paid			(5,287,200)
Purchase of treasury stock and repurchase of stock from employees and directors for minimum tax withholdings	(66,400)	(121,600)	(882,100)
Net cash provided by (used in) financing activities	12,640,600	4,398,600	5,957,200
Net increase (decrease) in cash and cash equivalents	644,000	1,060,000	19,700
CASH AND CASH EQUIVALENTS, beginning of period	1,110,000	50,000	30,300
CASH AND CASH EQUIVALENTS, end of period	1,754,000	1,110,000	50,000
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Capital expenditures included in accounts payable	4,494,900	$ 1,170,300	$ 2,492,500
Right-of-use asset acquired in exchange for lease liability	$ 247,400