INDUSTRY SEGMENT INFORMATION (Details) $ in Thousands	3 Months Ended
Apr. 02, 2016 USD ($) item	Apr. 04, 2015 USD ($)	Jan. 02, 2016 USD ($)
INDUSTRY SEGMENT INFORMATION
Number of industry groups in which the entity operates \| item	2
INDUSTRY SEGMENT INFORMATION
Number of reportable segments \| item	2
Revenues from external customers	$ 34,228	$ 30,685
Depreciation, depletion and amortization	639	646
Operating (loss) income	852	(219)
Segment assets	76,014	75,755	$ 75,755
Capital expenditures	1,082	93
Concrete Aggregates and Construction Supplies
INDUSTRY SEGMENT INFORMATION
Revenues from external customers	12,199	10,565
Depreciation, depletion and amortization	347	337
Operating (loss) income	(194)	(728)
Segment assets	31,419	31,791
Capital expenditures	919
Doors
INDUSTRY SEGMENT INFORMATION
Revenues from external customers	3,855	4,188
Depreciation, depletion and amortization	31	31
Operating (loss) income	310	338
Segment assets	6,834	6,471
Capital expenditures	22	1
Heating and Cooling
INDUSTRY SEGMENT INFORMATION
Revenues from external customers	11,150	9,146
Depreciation, depletion and amortization	138	142
Operating (loss) income	1,034	497
Segment assets	18,959	22,628
Capital expenditures	117	59
Evaporative Cooling
INDUSTRY SEGMENT INFORMATION
Revenues from external customers	7,020	6,782
Depreciation, depletion and amortization	119	123
Operating (loss) income	453	451
Segment assets	16,002	12,730
Capital expenditures	24	33
Unallocated Corporate
INDUSTRY SEGMENT INFORMATION
Revenues from external customers	4	4
Depreciation, depletion and amortization	4	13
Operating (loss) income	(751)	(777)
Segment assets	2,800	2,135
Construction Products
INDUSTRY SEGMENT INFORMATION
Revenues from external customers	16,054	14,753
Depreciation, depletion and amortization	378	368
Operating (loss) income	116	(390)
Segment assets	38,253	38,262
Capital expenditures	941	1
HVAC Industry
INDUSTRY SEGMENT INFORMATION
Revenues from external customers	18,170	15,928
Depreciation, depletion and amortization	257	265
Operating (loss) income	1,487	948
Segment assets	34,961	35,358
Capital expenditures	$ 141	$ 92

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

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