Discontinued Operations - Financial Results of Retail Segment (Details) - USD ($)		3 Months Ended		9 Months Ended		12 Months Ended
	Dec. 02, 2020	Dec. 27, 2020	Dec. 29, 2019	Dec. 27, 2020	Dec. 29, 2019	Mar. 29, 2020
Discontinued Operations Income Statement Disclosures
Gain on disposal				$ 3,020,800
Income (loss) from discontinued operations		$ 4,787,500	$ (2,947,400)	7,706,000	$ 134,000
ASSETS
Current portion of assets held for sale		2,684,200		2,684,200		$ 18,849,900
Discontinued Operations, Disposed of by Sale | Ventev brand and other retail-related assets
Discontinued Operations Income Statement Disclosures
Revenues		26,413,900		80,512,800
Cost of goods sold		21,529,700		67,704,600
Gross profit		4,884,200		12,808,200
Selling, general and administrative expenses		3,215,700		7,442,000
Income (loss) from operations		1,668,500		5,366,200
Gain on disposal		3,020,800		3,020,800
Income (loss) before provision for (benefit from) income taxes		4,689,300		8,387,000
(Benefit from) provision for income taxes		(98,200)		681,000
Income (loss) from discontinued operations		4,787,500		7,706,000
ASSETS
Product inventory, net		2,684,200		2,684,200
Current portion of assets held for sale		$ 2,684,200		$ 2,684,200
Discontinued Operation, Name of Segment [Extensible List]	tess:RetailMarketSegmentMember	tess:RetailMarketSegmentMember		tess:RetailMarketSegmentMember
Cash provided by operating activities of discontinued operations				$ 10,600,000
Cash provided in investing activities of discontinued operations				$ 9,200,000
Discontinued Operations, Held-for-sale | Ventev brand and other retail-related assets
Discontinued Operations Income Statement Disclosures
Revenues			38,734,200		108,943,700
Cost of goods sold			35,307,600		94,340,100
Gross profit			3,426,600		14,603,600
Selling, general and administrative expenses			4,484,300		11,863,200
Goodwill impairment			2,569,100		2,569,100
Income (loss) from operations			(3,626,800)		171,300
Income (loss) before provision for (benefit from) income taxes			(3,626,800)		171,300
(Benefit from) provision for income taxes			(679,400)		37,300
Income (loss) from discontinued operations			$ (2,947,400)		$ 134,000
ASSETS
Product inventory, net						18,849,900
Current portion of assets held for sale						$ 18,849,900
Discontinued Operation, Name of Segment [Extensible List]			tess:RetailMarketSegmentMember		tess:RetailMarketSegmentMember	tess:RetailMarketSegmentMember
Cash provided by operating activities of discontinued operations					$ 5,700,000
Cash provided in investing activities of discontinued operations					$ 0