INDUSTRY SEGMENT INFORMATION (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 29, 2019 USD ($) segment company	Jun. 30, 2018 USD ($)	Dec. 29, 2018 USD ($)
INDUSTRY SEGMENT INFORMATION
Number of operating segments | segment			4
Number of reportable segments | segment			3
Number of companies that comprise TMC | company			3
Revenues from external customers	$ 25,257	$ 25,557	$ 47,786	$ 48,967
Depreciation, depletion and amortization	254	405	772	810
Operating income (loss)	(5,419)	1,014	6,957	(6,510)
Segment assets	85,612	75,703	85,612	75,703	$ 75,703
Capital expenditures	385	321	448	734
Held for Sale
INDUSTRY SEGMENT INFORMATION
Segment assets		24,036		24,036
Unallocated Corporate
INDUSTRY SEGMENT INFORMATION
Revenues from external customers	5	29	16	33
Depreciation, depletion and amortization	15	12	28	23
Operating income (loss)	(3,314)	(875)	(4,883)	(1,899)
Segment assets	14,438	3,346	14,438	3,346
Capital expenditures	15	(5)	15	46
HVAC
INDUSTRY SEGMENT INFORMATION
Revenues from external customers	17,289	17,622	34,010	35,131
Depreciation, depletion and amortization	112	271	522	540
Operating income (loss)	(1,858)	279	(2,336)	594
Segment assets	45,984	29,003	45,984	29,003
Capital expenditures	149	280	193	545
Doors
INDUSTRY SEGMENT INFORMATION
Revenues from external customers	6,454	5,782	10,696	10,078
Depreciation, depletion and amortization	46	42	89	82
Operating income (loss)	614	918	993	1,356
Segment assets	13,783	8,003	13,783	8,003
Capital expenditures	89	46	108	79
Construction Materials
INDUSTRY SEGMENT INFORMATION
Revenues from external customers	1,509	2,124	3,064	3,725
Depreciation, depletion and amortization	82	80	134	165
Operating income (loss)	(861)	692	13,183	(6,561)
Segment assets	11,407	$ 11,315	11,407	11,315
Capital expenditures	$ 132		$ 132	$ 64