The expected time within which the reclamation process will be completed by an outside party.

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Represents the number of companies that comprise TMC.

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of expense for allocation of cost of tangible and intangible assets over their useful lives, and reduction in quantity of natural resource due to consumption directly used in production of good and rendering of service.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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The net result for the period of deducting operating expenses from operating revenues.

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The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

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Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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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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INDUSTRY SEGMENT INFORMATION (Details) $ in Thousands	3 Months Ended								12 Months Ended
INDUSTRY SEGMENT INFORMATION (Details) $ in Thousands	Dec. 28, 2019 USD ($)	Sep. 28, 2019 USD ($)	Jun. 29, 2019 USD ($)	Mar. 30, 2019 USD ($)	Dec. 29, 2018 USD ($)	Sep. 29, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 28, 2019 USD ($) segment company	Dec. 29, 2018 USD ($)
INDUSTRY SEGMENT INFORMATION
Number of reportable segments \| segment									3
Number of companies that comprise TMC \| company									3
Revenues from external customers	$ 33,504	$ 31,987	$ 25,257	$ 22,528	$ 27,955	$ 23,965	$ 25,557	$ 23,410	$ 113,276	$ 100,887
Depreciation and amortization	592	$ 597	$ 254	$ 519	269	$ 393	$ 405	$ 405	1,962	1,472
Operating income (loss)									(22,845)	(8,764)
Segment assets	89,983				75,703				89,983	75,703
Capital expenditures									2,693	1,409
Held for Sale
INDUSTRY SEGMENT INFORMATION
Segment assets	896				24,036				896	24,036
Unallocated Corporate
INDUSTRY SEGMENT INFORMATION
Revenues from external customers									7	101
Depreciation and amortization									84	51
Operating income (loss)									(7,475)	(4,050)
Segment assets	13,554				3,346				13,554	3,346
Capital expenditures									$ 15	45
Minimum
INDUSTRY SEGMENT INFORMATION
Expected reclamation period									5 years
HVAC
INDUSTRY SEGMENT INFORMATION
Revenues from external customers									$ 82,149	73,478
Depreciation and amortization									1,272	949
Operating income (loss)									948	931
Segment assets	50,822				29,003				50,822	29,003
Capital expenditures									342	1,064
Doors
INDUSTRY SEGMENT INFORMATION
Revenues from external customers									24,369	20,158
Depreciation and amortization									285	171
Operating income (loss)									2,174	2,233
Segment assets	14,248				8,003				14,248	8,003
Capital expenditures									79	119
Construction Materials
INDUSTRY SEGMENT INFORMATION
Revenues from external customers									6,751	7,150
Depreciation and amortization									321	301
Operating income (loss)									(18,492)	(7,878)
Segment assets	$ 10,463				$ 11,315				10,463	11,315
Capital expenditures									$ 2,257	$ 181