GOODWILL AND AMORTIZABLE INTANGIBLE ASSETS (Details) - USD ($)	12 Months Ended
Dec. 29, 2018	Dec. 30, 2017
Goodwill
Goodwill	$ 7,229,000	$ 7,229,000
Goodwill impairment charges recognized	0	0
Changes recorded in value of goodwill	0	$ 0
Concrete Aggregates and Construction Supplies
Goodwill
Goodwill	6,229,000
Doors
Goodwill
Goodwill	$ 1,000,000

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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-Name Accounting Standards Codification
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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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